Eevee: Introduction of world preconvolved envmap.
authorClément Foucault <foucault.clem@gmail.com>
Tue, 18 Apr 2017 10:50:09 +0000 (12:50 +0200)
committerClément Foucault <foucault.clem@gmail.com>
Tue, 18 Apr 2017 11:10:17 +0000 (13:10 +0200)
For now only compute GGX convolution. The GGX LUT used for the split sum approximation (UE4) is merged with the LTX mag LUT that uses the same parameters (theta and roughness)

22 files changed:
source/blender/draw/CMakeLists.txt
source/blender/draw/engines/eevee/eevee.c
source/blender/draw/engines/eevee/eevee_lights.c
source/blender/draw/engines/eevee/eevee_lut.h
source/blender/draw/engines/eevee/eevee_private.h
source/blender/draw/engines/eevee/eevee_probes.c [new file with mode: 0644]
source/blender/draw/engines/eevee/shaders/bsdf_common_lib.glsl
source/blender/draw/engines/eevee/shaders/bsdf_direct_lib.glsl
source/blender/draw/engines/eevee/shaders/bsdf_lut_frag.glsl [new file with mode: 0644]
source/blender/draw/engines/eevee/shaders/bsdf_sampling_lib.glsl [new file with mode: 0644]
source/blender/draw/engines/eevee/shaders/lit_surface_frag.glsl
source/blender/draw/engines/eevee/shaders/ltc_lib.glsl
source/blender/draw/engines/eevee/shaders/probe_filter_frag.glsl [new file with mode: 0644]
source/blender/draw/engines/eevee/shaders/probe_frag.glsl [new file with mode: 0644]
source/blender/draw/engines/eevee/shaders/probe_geom.glsl [new file with mode: 0644]
source/blender/draw/engines/eevee/shaders/probe_vert.glsl [new file with mode: 0644]
source/blender/draw/engines/eevee/shaders/shadow_vert.glsl
source/blender/draw/intern/DRW_render.h
source/blender/draw/intern/draw_manager.c
source/blender/gpu/GPU_texture.h
source/blender/gpu/intern/gpu_draw.c
source/blender/gpu/intern/gpu_texture.c

index 06d152fe46e95e83dc4f694ed30debc3725c81e3..22acc98a5ca6c3f1ca9172b04de0637873d5c06a 100644 (file)
@@ -65,6 +65,7 @@ set(SRC
 
        engines/eevee/eevee.c
        engines/eevee/eevee_lights.c
+       engines/eevee/eevee_probes.c
        engines/eevee/eevee.h
        engines/eevee/eevee_private.h
 
@@ -103,12 +104,18 @@ data_to_c_simple(engines/clay/shaders/ssao_groundtruth.glsl SRC)
 
 data_to_c_simple(engines/eevee/shaders/lit_surface_frag.glsl SRC)
 data_to_c_simple(engines/eevee/shaders/lit_surface_vert.glsl SRC)
+data_to_c_simple(engines/eevee/shaders/probe_filter_frag.glsl SRC)
+data_to_c_simple(engines/eevee/shaders/probe_frag.glsl SRC)
+data_to_c_simple(engines/eevee/shaders/probe_geom.glsl SRC)
+data_to_c_simple(engines/eevee/shaders/probe_vert.glsl SRC)
 data_to_c_simple(engines/eevee/shaders/shadow_frag.glsl SRC)
 data_to_c_simple(engines/eevee/shaders/shadow_geom.glsl SRC)
 data_to_c_simple(engines/eevee/shaders/shadow_vert.glsl SRC)
 data_to_c_simple(engines/eevee/shaders/tonemap_frag.glsl SRC)
+data_to_c_simple(engines/eevee/shaders/bsdf_lut_frag.glsl SRC)
 data_to_c_simple(engines/eevee/shaders/bsdf_direct_lib.glsl SRC)
 data_to_c_simple(engines/eevee/shaders/bsdf_common_lib.glsl SRC)
+data_to_c_simple(engines/eevee/shaders/bsdf_sampling_lib.glsl SRC)
 data_to_c_simple(engines/eevee/shaders/ltc_lib.glsl SRC)
 
 data_to_c_simple(modes/shaders/common_globals_lib.glsl SRC)
index e028249d2bba2f5b0cc057494c40370b1b9bc5c0..f1eaead42c7373fc77381c55c8f4d253c0fb1580 100644 (file)
@@ -26,6 +26,8 @@
 #include "DRW_render.h"
 
 #include "BLI_dynstr.h"
+#include "BLI_rand.h"
+#include "GPU_glew.h"
 
 #include "eevee.h"
 #include "eevee_private.h"
@@ -39,29 +41,162 @@ static struct {
        struct GPUShader *depth_sh;
        struct GPUShader *tonemap;
        struct GPUShader *shadow_sh;
+       /* Temp : use world shader */
+       struct GPUShader *probe_sh;
+       struct GPUShader *probe_filter_sh;
+
        struct GPUTexture *ltc_mat;
-       struct GPUTexture *ltc_mag;
+       struct GPUTexture *brdf_lut;
+       struct GPUTexture *hammersley;
+       struct GPUTexture *jitter;
 
        float camera_pos[3];
 } e_data = {NULL}; /* Engine data */
 
 extern char datatoc_ltc_lib_glsl[];
+extern char datatoc_bsdf_lut_frag_glsl[];
 extern char datatoc_bsdf_common_lib_glsl[];
 extern char datatoc_bsdf_direct_lib_glsl[];
+extern char datatoc_bsdf_sampling_lib_glsl[];
 extern char datatoc_lit_surface_frag_glsl[];
 extern char datatoc_lit_surface_vert_glsl[];
 extern char datatoc_tonemap_frag_glsl[];
 extern char datatoc_shadow_frag_glsl[];
 extern char datatoc_shadow_geom_glsl[];
 extern char datatoc_shadow_vert_glsl[];
+extern char datatoc_probe_filter_frag_glsl[];
+extern char datatoc_probe_frag_glsl[];
+extern char datatoc_probe_geom_glsl[];
+extern char datatoc_probe_vert_glsl[];
+
+/* Van der Corput sequence */
+ /* From http://holger.dammertz.org/stuff/notes_HammersleyOnHemisphere.html */
+static float radical_inverse(int i) {
+       unsigned int bits = (unsigned int)i;
+       bits = (bits << 16u) | (bits >> 16u);
+       bits = ((bits & 0x55555555u) << 1u) | ((bits & 0xAAAAAAAAu) >> 1u);
+       bits = ((bits & 0x33333333u) << 2u) | ((bits & 0xCCCCCCCCu) >> 2u);
+       bits = ((bits & 0x0F0F0F0Fu) << 4u) | ((bits & 0xF0F0F0F0u) >> 4u);
+       bits = ((bits & 0x00FF00FFu) << 8u) | ((bits & 0xFF00FF00u) >> 8u);
+       return (float)bits * 2.3283064365386963e-10f;
+}
+
+static struct GPUTexture *create_hammersley_sample_texture(int samples)
+{
+       struct GPUTexture *tex;
+       float (*texels)[2] = MEM_mallocN(sizeof(float[2]) * samples, "hammersley_tex");
+       int i;
+
+       for (i = 0; i < samples; i++) {
+               float phi = radical_inverse(i) * 2.0f * M_PI;
+               texels[i][0] = cos(phi);
+               texels[i][1] = sinf(phi);
+       }
+
+       tex = DRW_texture_create_1D(samples, DRW_TEX_RG_16, DRW_TEX_WRAP, (float *)texels);
+       MEM_freeN(texels);
+       return tex;
+}
+
+static struct GPUTexture *create_jitter_texture(int w, int h)
+{
+       struct GPUTexture *tex;
+       float (*texels)[2] = MEM_mallocN(sizeof(float[2]) * w * h, "jitter_tex");
+       int i;
+
+       /* TODO replace by something more evenly distributed like blue noise */
+       for (i = 0; i < w * h; i++) {
+               texels[i][0] = 2.0f * BLI_frand() - 1.0f;
+               texels[i][1] = 2.0f * BLI_frand() - 1.0f;
+               normalize_v2(texels[i]);
+       }
+
+       tex = DRW_texture_create_2D(w, h, DRW_TEX_RG_16, DRW_TEX_WRAP, (float *)texels);
+       MEM_freeN(texels);
+       return tex;
+}
+
+static struct GPUTexture *create_ggx_lut_texture(int w, int h)
+{
+       struct GPUTexture *tex;
+#if 0 /* Used only to generate the LUT values */
+       struct GPUFrameBuffer *fb = NULL;
+       static float samples_ct = 8192.0f;
+       static float inv_samples_ct = 1.0f / 8192.0f;
+
+       char *lib_str = NULL;
+
+       DynStr *ds_vert = BLI_dynstr_new();
+       BLI_dynstr_append(ds_vert, datatoc_bsdf_common_lib_glsl);
+       BLI_dynstr_append(ds_vert, datatoc_bsdf_sampling_lib_glsl);
+       lib_str = BLI_dynstr_get_cstring(ds_vert);
+       BLI_dynstr_free(ds_vert);
+
+       struct GPUShader *sh = DRW_shader_create_with_lib(datatoc_probe_vert_glsl, datatoc_probe_geom_glsl, datatoc_bsdf_lut_frag_glsl, lib_str,
+                                                           "#define HAMMERSLEY_SIZE 8192\n"
+                                                           "#define BRDF_LUT_SIZE 64\n"
+                                                           "#define NOISE_SIZE 64\n");
+
+       DRWPass *pass = DRW_pass_create("Probe Filtering", DRW_STATE_WRITE_COLOR);
+       DRWShadingGroup *grp = DRW_shgroup_create(sh, pass);
+       DRW_shgroup_uniform_float(grp, "sampleCount", &samples_ct, 1);
+       DRW_shgroup_uniform_float(grp, "invSampleCount", &inv_samples_ct, 1);
+       DRW_shgroup_uniform_texture(grp, "texHammersley", e_data.hammersley, 0);
+       DRW_shgroup_uniform_texture(grp, "texJitter", e_data.jitter, 1);
+
+       struct Batch *geom = DRW_cache_fullscreen_quad_get();
+       DRW_shgroup_call_add(grp, geom, NULL);
+
+       float *texels = MEM_mallocN(sizeof(float[2]) * w * h, "lut");
+
+       tex = DRW_texture_create_2D(w, h, DRW_TEX_RG_16, DRW_TEX_FILTER, (float *)texels);
+
+       DRWFboTexture tex_filter = {&tex, DRW_BUF_RG_16, DRW_TEX_FILTER};
+       DRW_framebuffer_init(&fb, w, h, &tex_filter, 1);
+
+       DRW_framebuffer_bind(fb);
+       DRW_draw_pass(pass);
+
+       float *data = MEM_mallocN(sizeof(float[3]) * w * h, "lut");
+       glReadBuffer(GL_COLOR_ATTACHMENT0);
+       glReadPixels(0, 0, w, h, GL_RGB, GL_FLOAT, data);
+
+       printf("{");
+       for (int i = 0; i < w*h * 3; i+=3) {
+               printf("%ff, %ff, ", data[i],  data[i+1]); i+=3;
+               printf("%ff, %ff, ", data[i],  data[i+1]); i+=3;
+               printf("%ff, %ff, ", data[i],  data[i+1]); i+=3;
+               printf("%ff, %ff, \n", data[i],  data[i+1]);
+       }
+       printf("}");
+
+       MEM_freeN(texels);
+       MEM_freeN(data);
+#else
+       float (*texels)[3] = MEM_mallocN(sizeof(float[3]) * 64 * 64, "bsdf lut texels");
+
+       for (int i = 0; i < 64 * 64; i++) {
+               texels[i][0] = bsdf_split_sum_ggx[i*2 + 0];
+               texels[i][1] = bsdf_split_sum_ggx[i*2 + 1];
+               texels[i][2] = ltc_mag_ggx[i];
+       }
+
+       tex = DRW_texture_create_2D(64, 64, DRW_TEX_RGB_16, DRW_TEX_FILTER, (float *)texels);
+       MEM_freeN(texels);
+#endif
+
+       return tex;
+}
+
 
 /* *********** FUNCTIONS *********** */
 
-static void EEVEE_engine_init(void *vedata)
+static void EEVEE_engine_init(void *ved)
 {
-       EEVEE_TextureList *txl = ((EEVEE_Data *)vedata)->txl;
-       EEVEE_FramebufferList *fbl = ((EEVEE_Data *)vedata)->fbl;
-       EEVEE_StorageList *stl = ((EEVEE_Data *)vedata)->stl;
+       EEVEE_Data *vedata = (EEVEE_Data *)ved;
+       EEVEE_TextureList *txl = vedata->txl;
+       EEVEE_FramebufferList *fbl = vedata->fbl;
+       EEVEE_StorageList *stl = vedata->stl;
 
        DRWFboTexture tex = {&txl->color, DRW_BUF_RGBA_16, DRW_TEX_FILTER};
 
@@ -98,6 +233,26 @@ static void EEVEE_engine_init(void *vedata)
                e_data.shadow_sh = DRW_shader_create(datatoc_shadow_vert_glsl, datatoc_shadow_geom_glsl, datatoc_shadow_frag_glsl, NULL);
        }
 
+       if (!e_data.probe_sh) {
+               e_data.probe_sh = DRW_shader_create(datatoc_probe_vert_glsl, datatoc_probe_geom_glsl, datatoc_probe_frag_glsl, NULL);
+       }
+
+       if (!e_data.probe_filter_sh) {
+               char *lib_str = NULL;
+
+               DynStr *ds_vert = BLI_dynstr_new();
+               BLI_dynstr_append(ds_vert, datatoc_bsdf_common_lib_glsl);
+               BLI_dynstr_append(ds_vert, datatoc_bsdf_sampling_lib_glsl);
+               lib_str = BLI_dynstr_get_cstring(ds_vert);
+               BLI_dynstr_free(ds_vert);
+
+               e_data.probe_filter_sh = DRW_shader_create_with_lib(datatoc_probe_vert_glsl, datatoc_probe_geom_glsl, datatoc_probe_filter_frag_glsl, lib_str,
+                                                                   "#define HAMMERSLEY_SIZE 8192\n"
+                                                                   "#define NOISE_SIZE 64\n");
+
+               MEM_freeN(lib_str);
+       }
+
        if (!e_data.tonemap) {
                e_data.tonemap = DRW_shader_create_fullscreen(datatoc_tonemap_frag_glsl, NULL);
        }
@@ -106,21 +261,40 @@ static void EEVEE_engine_init(void *vedata)
                e_data.ltc_mat = DRW_texture_create_2D(64, 64, DRW_TEX_RGBA_16, DRW_TEX_FILTER, ltc_mat_ggx);
        }
 
-       if (!e_data.ltc_mag) {
-               e_data.ltc_mag = DRW_texture_create_2D(64, 64, DRW_TEX_R_16, DRW_TEX_FILTER, ltc_mag_ggx);
+       if (!e_data.hammersley) {
+               e_data.hammersley = create_hammersley_sample_texture(8192);
        }
 
-       if (stl->lamps == NULL) {
-               EEVEE_lights_init(stl);
+       if (!e_data.jitter) {
+               e_data.jitter = create_jitter_texture(64, 64);
+       }
+
+       if (!e_data.brdf_lut) {
+               e_data.brdf_lut = create_ggx_lut_texture(64, 64);
        }
 
-       // EEVEE_lights_update(stl);
        {
                float viewinvmat[4][4];
                DRW_viewport_matrix_get(viewinvmat, DRW_MAT_VIEWINV);
 
                copy_v3_v3(e_data.camera_pos, viewinvmat[3]);
        }
+
+       EEVEE_lights_init(stl);
+
+       EEVEE_probes_init(vedata);
+
+       // EEVEE_lights_update(stl);
+}
+
+static DRWShadingGroup *eevee_cube_shgroup(struct GPUShader *sh, DRWPass *pass, struct Batch *geom)
+{
+       DRWShadingGroup *grp = DRW_shgroup_instance_create(sh, pass, geom);
+
+       for (int i = 0; i < 6; ++i)
+               DRW_shgroup_dynamic_call_add(grp);
+
+       return grp;
 }
 
 static void EEVEE_cache_init(void *vedata)
@@ -135,13 +309,37 @@ static void EEVEE_cache_init(void *vedata)
        }
 
        {
-               /* Shadow Pass */
                psl->shadow_pass = DRW_pass_create("Shadow Pass", DRW_STATE_WRITE_DEPTH | DRW_STATE_DEPTH_LESS);
                stl->g_data->shadow_shgrp = DRW_shgroup_create(e_data.shadow_sh, psl->shadow_pass);
                DRW_shgroup_uniform_mat4(stl->g_data->shadow_shgrp, "ShadowMatrix", (float *)stl->lamps->shadowmat);
                DRW_shgroup_uniform_int(stl->g_data->shadow_shgrp, "Layer", &stl->lamps->layer, 1);
        }
 
+       {
+               psl->probe_background = DRW_pass_create("Probe Background Pass", DRW_STATE_WRITE_DEPTH | DRW_STATE_WRITE_COLOR);
+
+               struct Batch *geom = DRW_cache_fullscreen_quad_get();
+               DRWShadingGroup *grp = eevee_cube_shgroup(e_data.probe_sh, psl->probe_background, geom);
+               DRW_shgroup_uniform_int(grp, "Layer", &stl->probes->layer, 1);
+               DRW_shgroup_uniform_buffer(grp, "probeLatLong", &stl->probes->backgroundtex, 0);
+       }
+
+       {
+               psl->probe_prefilter = DRW_pass_create("Probe Filtering", DRW_STATE_WRITE_COLOR);
+
+               struct Batch *geom = DRW_cache_fullscreen_quad_get();
+               DRWShadingGroup *grp = eevee_cube_shgroup(e_data.probe_filter_sh, psl->probe_prefilter, geom);
+               DRW_shgroup_uniform_float(grp, "sampleCount", &stl->probes->samples_ct, 1);
+               DRW_shgroup_uniform_float(grp, "invSampleCount", &stl->probes->invsamples_ct, 1);
+               DRW_shgroup_uniform_float(grp, "roughnessSquared", &stl->probes->roughness, 1);
+               DRW_shgroup_uniform_float(grp, "lodFactor", &stl->probes->lodfactor, 1);
+               DRW_shgroup_uniform_float(grp, "lodMax", &stl->probes->lodmax, 1);
+               DRW_shgroup_uniform_int(grp, "Layer", &stl->probes->layer, 1);
+               DRW_shgroup_uniform_texture(grp, "texHammersley", e_data.hammersley, 0);
+               // DRW_shgroup_uniform_texture(grp, "texJitter", e_data.jitter, 1);
+               DRW_shgroup_uniform_texture(grp, "probeHdr", txl->probe_rt, 3);
+       }
+
        {
                psl->depth_pass = DRW_pass_create("Depth Pass", DRW_STATE_WRITE_DEPTH | DRW_STATE_DEPTH_LESS);
                stl->g_data->depth_shgrp = DRW_shgroup_create(e_data.depth_sh, psl->depth_pass);
@@ -158,9 +356,11 @@ static void EEVEE_cache_init(void *vedata)
                DRW_shgroup_uniform_block(stl->g_data->default_lit_grp, "light_block", stl->light_ubo, 0);
                DRW_shgroup_uniform_block(stl->g_data->default_lit_grp, "shadow_block", stl->shadow_ubo, 1);
                DRW_shgroup_uniform_int(stl->g_data->default_lit_grp, "light_count", &stl->lamps->num_light, 1);
+               DRW_shgroup_uniform_float(stl->g_data->default_lit_grp, "lodMax", &stl->probes->lodmax, 1);
                DRW_shgroup_uniform_vec3(stl->g_data->default_lit_grp, "cameraPos", e_data.camera_pos, 1);
                DRW_shgroup_uniform_texture(stl->g_data->default_lit_grp, "ltcMat", e_data.ltc_mat, 0);
-               DRW_shgroup_uniform_texture(stl->g_data->default_lit_grp, "ltcMag", e_data.ltc_mag, 1);
+               DRW_shgroup_uniform_texture(stl->g_data->default_lit_grp, "brdfLut", e_data.brdf_lut, 1);
+               DRW_shgroup_uniform_texture(stl->g_data->default_lit_grp, "probeFiltered", txl->probe_pool, 2);
                /* NOTE : Adding Shadow Map textures uniform in EEVEE_cache_finish */
        }
 
@@ -208,8 +408,8 @@ static void EEVEE_cache_finish(void *vedata)
        EEVEE_lights_cache_finish(stl, txl, fbl);
 
        /* Shadows binding */
-       DRW_shgroup_uniform_texture(stl->g_data->default_lit_grp, "shadowMaps", txl->shadow_depth_map_pool, 2);
-       DRW_shgroup_uniform_texture(stl->g_data->default_lit_grp, "shadowCubes", txl->shadow_depth_cube_pool, 3);
+       DRW_shgroup_uniform_texture(stl->g_data->default_lit_grp, "shadowMaps", txl->shadow_depth_map_pool, 4);
+       DRW_shgroup_uniform_texture(stl->g_data->default_lit_grp, "shadowCubes", txl->shadow_depth_cube_pool, 5);
 }
 
 static void EEVEE_draw_scene(void *vedata)
@@ -221,6 +421,9 @@ static void EEVEE_draw_scene(void *vedata)
        DefaultFramebufferList *dfbl = DRW_viewport_framebuffer_list_get();
        DefaultTextureList *dtxl = DRW_viewport_texture_list_get();
 
+       /* Refresh Probes */
+       EEVEE_refresh_probe((EEVEE_Data *)vedata);
+
        /* Refresh shadows */
        EEVEE_draw_shadows((EEVEE_Data *)vedata);
 
@@ -250,9 +453,13 @@ static void EEVEE_engine_free(void)
 {
        DRW_SHADER_FREE_SAFE(e_data.default_lit);
        DRW_SHADER_FREE_SAFE(e_data.shadow_sh);
+       DRW_SHADER_FREE_SAFE(e_data.probe_sh);
+       DRW_SHADER_FREE_SAFE(e_data.probe_filter_sh);
        DRW_SHADER_FREE_SAFE(e_data.tonemap);
        DRW_TEXTURE_FREE_SAFE(e_data.ltc_mat);
-       DRW_TEXTURE_FREE_SAFE(e_data.ltc_mag);
+       DRW_TEXTURE_FREE_SAFE(e_data.brdf_lut);
+       DRW_TEXTURE_FREE_SAFE(e_data.hammersley);
+       DRW_TEXTURE_FREE_SAFE(e_data.jitter);
 }
 
 static void EEVEE_collection_settings_create(RenderEngine *UNUSED(engine), IDProperty *props)
index 9c19020050d6644810e5e49a12dddbf2b8dab107..12d8fc2db27ebe267ce9341f5c8437426d0904b0 100644 (file)
@@ -241,46 +241,6 @@ static void eevee_light_setup(Object *ob, EEVEE_LampsInfo *linfo, EEVEE_LampEngi
        evli->shadowid = -1.0f;
 }
 
-static float texcomat[4][4] = { /* From NDC to TexCo */
-       {0.5, 0.0, 0.0, 0.0},
-       {0.0, 0.5, 0.0, 0.0},
-       {0.0, 0.0, 0.5, 0.0},
-       {0.5, 0.5, 0.5, 1.0}
-};
-
-static float cubefacemat[6][4][4] = {
-       /* Pos X */
-       {{0.0, 0.0, -1.0, 0.0},
-        {0.0, -1.0, 0.0, 0.0},
-        {-1.0, 0.0, 0.0, 0.0},
-        {0.0, 0.0, 0.0, 1.0}},
-       /* Neg X */
-       {{0.0, 0.0, 1.0, 0.0},
-        {0.0, -1.0, 0.0, 0.0},
-        {1.0, 0.0, 0.0, 0.0},
-        {0.0, 0.0, 0.0, 1.0}},
-       /* Pos Y */
-       {{1.0, 0.0, 0.0, 0.0},
-        {0.0, 0.0, 1.0, 0.0},
-        {0.0, -1.0, 0.0, 0.0},
-        {0.0, 0.0, 0.0, 1.0}},
-       /* Neg Y */
-       {{1.0, 0.0, 0.0, 0.0},
-        {0.0, 0.0, -1.0, 0.0},
-        {0.0, 1.0, 0.0, 0.0},
-        {0.0, 0.0, 0.0, 1.0}},
-       /* Pos Z */
-       {{1.0, 0.0, 0.0, 0.0},
-        {0.0, -1.0, 0.0, 0.0},
-        {0.0, 0.0, -1.0, 0.0},
-        {0.0, 0.0, 0.0, 1.0}},
-       /* Neg Z */
-       {{-1.0, 0.0, 0.0, 0.0},
-        {0.0, -1.0, 0.0, 0.0},
-        {0.0, 0.0, 1.0, 0.0},
-        {0.0, 0.0, 0.0, 1.0}},
-};
-
 static void eevee_shadow_cube_setup(Object *ob, EEVEE_LampsInfo *linfo, EEVEE_LampEngineData *led)
 {
        float projmat[4][4];
index 4fdfb4c33e2c0882ef50fed2c3a4d7d7962eb859..f2b534677088ab15d2c6739ae3a3cb8d23ac0760 100644 (file)
@@ -2318,4 +2318,1030 @@ static float ltc_mag_ggx[64 * 64] = {
        0.942877,
 };
 
+static float bsdf_split_sum_ggx[64 * 64 * 2] = {
+       1.000000f, 0.000000f, 1.000000f, 0.000000f, 1.000000f, 0.000000f, 1.000000f, 0.000000f,
+       1.000000f, 0.000000f, 1.000000f, 0.000000f, 0.999512f, 0.000000f, 0.999512f, 0.000000f,
+       0.999512f, 0.000000f, 0.999023f, 0.000001f, 0.999023f, 0.000001f, 0.998535f, 0.000001f,
+       0.998047f, 0.000001f, 0.997559f, 0.000002f, 0.997070f, 0.000003f, 0.996094f, 0.000004f,
+       0.994629f, 0.000004f, 0.993652f, 0.000006f, 0.991699f, 0.000007f, 0.989746f, 0.000008f,
+       0.987305f, 0.000010f, 0.984375f, 0.000012f, 0.980957f, 0.000013f, 0.977539f, 0.000016f,
+       0.973145f, 0.000018f, 0.967773f, 0.000020f, 0.961914f, 0.000023f, 0.955566f, 0.000025f,
+       0.947754f, 0.000028f, 0.939941f, 0.000031f, 0.930664f, 0.000033f, 0.920410f, 0.000036f,
+       0.909180f, 0.000039f, 0.896973f, 0.000042f, 0.884277f, 0.000044f, 0.870117f, 0.000047f,
+       0.854980f, 0.000049f, 0.838867f, 0.000051f, 0.821777f, 0.000053f, 0.803711f, 0.000055f,
+       0.785156f, 0.000057f, 0.765625f, 0.000058f, 0.745605f, 0.000059f, 0.724609f, 0.000060f,
+       0.703613f, 0.000061f, 0.681641f, 0.000061f, 0.659668f, 0.000061f, 0.637695f, 0.000061f,
+       0.615234f, 0.000061f, 0.592773f, 0.000060f, 0.570801f, 0.000060f, 0.548340f, 0.000059f,
+       0.526855f, 0.000058f, 0.504883f, 0.000057f, 0.483887f, 0.000055f, 0.462891f, 0.000054f,
+       0.442627f, 0.000053f, 0.422607f, 0.000051f, 0.403320f, 0.000050f, 0.384766f, 0.000048f,
+       0.366455f, 0.000046f, 0.348877f, 0.000045f, 0.332031f, 0.000043f, 0.315918f, 0.000041f,
+       0.999512f, 0.000000f, 0.999512f, 0.000000f, 1.000000f, 0.000000f, 1.000000f, 0.000000f,
+       0.999512f, 0.000000f, 1.000000f, 0.000000f, 0.999512f, 0.000000f, 0.999512f, 0.000000f,
+       0.999512f, 0.000000f, 0.999023f, 0.000001f, 0.999023f, 0.000001f, 0.998535f, 0.000002f,
+       0.998047f, 0.000003f, 0.997559f, 0.000004f, 0.997070f, 0.000005f, 0.996094f, 0.000006f,
+       0.994629f, 0.000008f, 0.993164f, 0.000010f, 0.991699f, 0.000012f, 0.989746f, 0.000015f,
+       0.987305f, 0.000018f, 0.984375f, 0.000020f, 0.980957f, 0.000024f, 0.977051f, 0.000027f,
+       0.972168f, 0.000031f, 0.967285f, 0.000035f, 0.961426f, 0.000039f, 0.954590f, 0.000043f,
+       0.947266f, 0.000048f, 0.938965f, 0.000052f, 0.929199f, 0.000057f, 0.919434f, 0.000061f,
+       0.908203f, 0.000065f, 0.895996f, 0.000069f, 0.882812f, 0.000073f, 0.868652f, 0.000077f,
+       0.853027f, 0.000080f, 0.837402f, 0.000083f, 0.820312f, 0.000086f, 0.802246f, 0.000088f,
+       0.783691f, 0.000090f, 0.764160f, 0.000092f, 0.744141f, 0.000093f, 0.723633f, 0.000093f,
+       0.702637f, 0.000094f, 0.681152f, 0.000094f, 0.659180f, 0.000093f, 0.637207f, 0.000093f,
+       0.615234f, 0.000091f, 0.593262f, 0.000090f, 0.571289f, 0.000088f, 0.549316f, 0.000087f,
+       0.527344f, 0.000085f, 0.505859f, 0.000082f, 0.485107f, 0.000080f, 0.464355f, 0.000078f,
+       0.444336f, 0.000075f, 0.424561f, 0.000072f, 0.405273f, 0.000070f, 0.386719f, 0.000067f,
+       0.368652f, 0.000065f, 0.351318f, 0.000062f, 0.334473f, 0.000059f, 0.318115f, 0.000057f,
+       0.999512f, 0.000000f, 0.999512f, 0.000000f, 0.999512f, 0.000000f, 1.000000f, 0.000000f,
+       0.999512f, 0.000000f, 0.999512f, 0.000000f, 0.999512f, 0.000001f, 0.999512f, 0.000001f,
+       0.999512f, 0.000001f, 0.999512f, 0.000003f, 0.999023f, 0.000002f, 0.998535f, 0.000004f,
+       0.998047f, 0.000005f, 0.997559f, 0.000007f, 0.997070f, 0.000009f, 0.996094f, 0.000011f,
+       0.994629f, 0.000013f, 0.993164f, 0.000017f, 0.991211f, 0.000020f, 0.989258f, 0.000024f,
+       0.986816f, 0.000028f, 0.983887f, 0.000033f, 0.980469f, 0.000038f, 0.976562f, 0.000043f,
+       0.971680f, 0.000049f, 0.966797f, 0.000055f, 0.960449f, 0.000062f, 0.953613f, 0.000068f,
+       0.946289f, 0.000075f, 0.937500f, 0.000081f, 0.928223f, 0.000088f, 0.917969f, 0.000094f,
+       0.906738f, 0.000100f, 0.894531f, 0.000106f, 0.880859f, 0.000111f, 0.866699f, 0.000116f,
+       0.851562f, 0.000120f, 0.835449f, 0.000124f, 0.818359f, 0.000127f, 0.800781f, 0.000130f,
+       0.782227f, 0.000132f, 0.762695f, 0.000134f, 0.742676f, 0.000134f, 0.722656f, 0.000135f,
+       0.701660f, 0.000134f, 0.680176f, 0.000133f, 0.658691f, 0.000132f, 0.636719f, 0.000130f,
+       0.615234f, 0.000128f, 0.593262f, 0.000125f, 0.571289f, 0.000123f, 0.549805f, 0.000119f,
+       0.528320f, 0.000116f, 0.507324f, 0.000112f, 0.486328f, 0.000109f, 0.466064f, 0.000105f,
+       0.446045f, 0.000101f, 0.426514f, 0.000097f, 0.407471f, 0.000093f, 0.388916f, 0.000089f,
+       0.370850f, 0.000085f, 0.353516f, 0.000082f, 0.336914f, 0.000078f, 0.320557f, 0.000074f,
+       1.000000f, 0.000000f, 0.999512f, 0.000000f, 0.999512f, 0.000000f, 0.999512f, 0.000000f,
+       1.000000f, 0.000000f, 1.000000f, 0.000001f, 0.999512f, 0.000001f, 0.999512f, 0.000002f,
+       0.999512f, 0.000002f, 0.999023f, 0.000003f, 0.999023f, 0.000005f, 0.998535f, 0.000006f,
+       0.998535f, 0.000008f, 0.997559f, 0.000011f, 0.997070f, 0.000014f, 0.996094f, 0.000017f,
+       0.994629f, 0.000020f, 0.993164f, 0.000026f, 0.991211f, 0.000030f, 0.989258f, 0.000036f,
+       0.986816f, 0.000043f, 0.983398f, 0.000050f, 0.979980f, 0.000058f, 0.976074f, 0.000066f,
+       0.971191f, 0.000074f, 0.965820f, 0.000082f, 0.959961f, 0.000093f, 0.952637f, 0.000101f,
+       0.945312f, 0.000111f, 0.936523f, 0.000120f, 0.927246f, 0.000129f, 0.916504f, 0.000137f,
+       0.905273f, 0.000145f, 0.892578f, 0.000153f, 0.879395f, 0.000160f, 0.865234f, 0.000166f,
+       0.850098f, 0.000171f, 0.833984f, 0.000176f, 0.816895f, 0.000179f, 0.799316f, 0.000182f,
+       0.780762f, 0.000184f, 0.761230f, 0.000185f, 0.741699f, 0.000185f, 0.721191f, 0.000184f,
+       0.700684f, 0.000183f, 0.679688f, 0.000181f, 0.658203f, 0.000178f, 0.636719f, 0.000175f,
+       0.615234f, 0.000171f, 0.593262f, 0.000167f, 0.571777f, 0.000162f, 0.550293f, 0.000158f,
+       0.529297f, 0.000152f, 0.508301f, 0.000147f, 0.487793f, 0.000142f, 0.467529f, 0.000136f,
+       0.447754f, 0.000131f, 0.428223f, 0.000125f, 0.409424f, 0.000120f, 0.391113f, 0.000115f,
+       0.373291f, 0.000109f, 0.355957f, 0.000104f, 0.339355f, 0.000099f, 0.323242f, 0.000094f,
+       0.999512f, 0.000002f, 0.999512f, 0.000002f, 1.000000f, 0.000002f, 0.999512f, 0.000002f,
+       1.000000f, 0.000002f, 0.999512f, 0.000002f, 0.999512f, 0.000002f, 0.999512f, 0.000003f,
+       0.999512f, 0.000004f, 0.999512f, 0.000005f, 0.999023f, 0.000007f, 0.998535f, 0.000010f,
+       0.998047f, 0.000012f, 0.997559f, 0.000017f, 0.996582f, 0.000020f, 0.995605f, 0.000025f,
+       0.994629f, 0.000032f, 0.993164f, 0.000038f, 0.991211f, 0.000047f, 0.988770f, 0.000055f,
+       0.986328f, 0.000063f, 0.983398f, 0.000074f, 0.979492f, 0.000085f, 0.975586f, 0.000095f,
+       0.970703f, 0.000108f, 0.965332f, 0.000121f, 0.958984f, 0.000132f, 0.952148f, 0.000145f,
+       0.944336f, 0.000157f, 0.935547f, 0.000170f, 0.925781f, 0.000181f, 0.915039f, 0.000192f,
+       0.903809f, 0.000203f, 0.891113f, 0.000212f, 0.877930f, 0.000220f, 0.863281f, 0.000227f,
+       0.848145f, 0.000234f, 0.832031f, 0.000239f, 0.814941f, 0.000242f, 0.797363f, 0.000245f,
+       0.778809f, 0.000247f, 0.759766f, 0.000247f, 0.740234f, 0.000246f, 0.720215f, 0.000244f,
+       0.699707f, 0.000241f, 0.678711f, 0.000237f, 0.657715f, 0.000233f, 0.636230f, 0.000228f,
+       0.614746f, 0.000222f, 0.593750f, 0.000216f, 0.572266f, 0.000209f, 0.551270f, 0.000202f,
+       0.530273f, 0.000195f, 0.509277f, 0.000187f, 0.489014f, 0.000180f, 0.468994f, 0.000172f,
+       0.449463f, 0.000165f, 0.430176f, 0.000157f, 0.411377f, 0.000150f, 0.393311f, 0.000143f,
+       0.375488f, 0.000136f, 0.358398f, 0.000129f, 0.341797f, 0.000123f, 0.325684f, 0.000116f,
+       0.999512f, 0.000005f, 0.999512f, 0.000005f, 0.999512f, 0.000005f, 0.999512f, 0.000005f,
+       0.999512f, 0.000005f, 0.999512f, 0.000005f, 0.999512f, 0.000006f, 0.999512f, 0.000007f,
+       0.999512f, 0.000008f, 0.999512f, 0.000011f, 0.999023f, 0.000013f, 0.998535f, 0.000015f,
+       0.998047f, 0.000019f, 0.997559f, 0.000026f, 0.996582f, 0.000033f, 0.995605f, 0.000040f,
+       0.994141f, 0.000047f, 0.993164f, 0.000058f, 0.991211f, 0.000069f, 0.988770f, 0.000080f,
+       0.985840f, 0.000093f, 0.982910f, 0.000106f, 0.979004f, 0.000121f, 0.975098f, 0.000137f,
+       0.970215f, 0.000153f, 0.964355f, 0.000169f, 0.958008f, 0.000186f, 0.951172f, 0.000201f,
+       0.943359f, 0.000218f, 0.934082f, 0.000233f, 0.924316f, 0.000248f, 0.914062f, 0.000262f,
+       0.902344f, 0.000275f, 0.889648f, 0.000286f, 0.875977f, 0.000295f, 0.861816f, 0.000304f,
+       0.846680f, 0.000311f, 0.830566f, 0.000316f, 0.813477f, 0.000319f, 0.795898f, 0.000321f,
+       0.777344f, 0.000322f, 0.758301f, 0.000320f, 0.739258f, 0.000318f, 0.719238f, 0.000314f,
+       0.698730f, 0.000309f, 0.678223f, 0.000303f, 0.657227f, 0.000296f, 0.636230f, 0.000288f,
+       0.614746f, 0.000280f, 0.593750f, 0.000271f, 0.572754f, 0.000262f, 0.551758f, 0.000252f,
+       0.531250f, 0.000243f, 0.510742f, 0.000233f, 0.490479f, 0.000223f, 0.470703f, 0.000213f,
+       0.451172f, 0.000203f, 0.432129f, 0.000194f, 0.413574f, 0.000184f, 0.395508f, 0.000175f,
+       0.377930f, 0.000166f, 0.360840f, 0.000157f, 0.344238f, 0.000149f, 0.328125f, 0.000141f,
+       0.999512f, 0.000011f, 0.999512f, 0.000011f, 0.999512f, 0.000011f, 0.999512f, 0.000011f,
+       0.999512f, 0.000011f, 0.999512f, 0.000012f, 0.999512f, 0.000014f, 0.999512f, 0.000015f,
+       0.999512f, 0.000017f, 0.999023f, 0.000020f, 0.998535f, 0.000022f, 0.998535f, 0.000028f,
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+       0.244995f, 0.754395f, 0.245117f, 0.754395f, 0.245483f, 0.753418f, 0.246704f, 0.750977f,
+       0.249634f, 0.745117f, 0.253662f, 0.734863f, 0.260010f, 0.717773f, 0.268555f, 0.694336f,
+       0.277344f, 0.665527f, 0.292480f, 0.632812f, 0.309814f, 0.599121f, 0.331787f, 0.565918f,
+       0.352539f, 0.533203f, 0.376465f, 0.501953f, 0.405518f, 0.472412f, 0.433838f, 0.444336f,
+       0.456787f, 0.417236f, 0.488281f, 0.391357f, 0.510254f, 0.366211f, 0.540039f, 0.343018f,
+       0.564941f, 0.320557f, 0.579590f, 0.299561f, 0.606445f, 0.279541f, 0.627441f, 0.260498f,
+       0.638184f, 0.242676f, 0.666504f, 0.226074f, 0.670898f, 0.210327f, 0.687988f, 0.195801f,
+       0.700684f, 0.182129f, 0.706055f, 0.169312f, 0.718262f, 0.157471f, 0.727539f, 0.146362f,
+       0.735840f, 0.136108f, 0.738770f, 0.126587f, 0.743164f, 0.117737f, 0.746582f, 0.109497f,
+       0.751953f, 0.101868f, 0.751953f, 0.094788f, 0.753906f, 0.088257f, 0.752930f, 0.082153f,
+       0.750977f, 0.076538f, 0.749512f, 0.071289f, 0.745605f, 0.066406f, 0.742188f, 0.061951f,
+       0.738281f, 0.057770f, 0.734375f, 0.053894f, 0.729004f, 0.050293f, 0.722656f, 0.046967f,
+       0.715332f, 0.043854f, 0.708496f, 0.040985f, 0.701172f, 0.038330f, 0.693359f, 0.035828f,
+       0.684570f, 0.033539f, 0.676270f, 0.031403f, 0.666992f, 0.029404f, 0.657227f, 0.027542f,
+       0.646973f, 0.025818f, 0.636719f, 0.024200f, 0.626465f, 0.022705f, 0.615723f, 0.021301f,
+       0.604980f, 0.020004f, 0.593750f, 0.018784f, 0.582520f, 0.017654f, 0.571289f, 0.016586f,
+       0.180542f, 0.818848f, 0.180664f, 0.818848f, 0.181274f, 0.817383f, 0.183350f, 0.812988f,
+       0.187134f, 0.802734f, 0.193237f, 0.784180f, 0.201416f, 0.757324f, 0.214355f, 0.723145f,
+       0.231445f, 0.685547f, 0.248901f, 0.648438f, 0.272217f, 0.611816f, 0.302979f, 0.577148f,
+       0.329834f, 0.544922f, 0.364258f, 0.514160f, 0.394043f, 0.484619f, 0.425781f, 0.456055f,
+       0.456543f, 0.428467f, 0.481934f, 0.402344f, 0.512207f, 0.376709f, 0.540039f, 0.352783f,
+       0.566406f, 0.329346f, 0.579102f, 0.307617f, 0.607910f, 0.286865f, 0.627930f, 0.267822f,
+       0.645996f, 0.249512f, 0.661621f, 0.232178f, 0.677734f, 0.216309f, 0.691406f, 0.201172f,
+       0.702637f, 0.187256f, 0.711426f, 0.174194f, 0.721680f, 0.161987f, 0.730957f, 0.150879f,
+       0.736328f, 0.140259f, 0.742188f, 0.130493f, 0.746582f, 0.121582f, 0.750488f, 0.113159f,
+       0.751953f, 0.105347f, 0.752930f, 0.098083f, 0.756836f, 0.091370f, 0.755859f, 0.085144f,
+       0.755371f, 0.079346f, 0.752441f, 0.073975f, 0.750488f, 0.069031f, 0.746582f, 0.064392f,
+       0.743652f, 0.060120f, 0.737793f, 0.056152f, 0.733398f, 0.052460f, 0.727051f, 0.049011f,
+       0.720215f, 0.045837f, 0.713867f, 0.042847f, 0.706543f, 0.040100f, 0.699219f, 0.037537f,
+       0.690430f, 0.035156f, 0.682129f, 0.032928f, 0.672852f, 0.030884f, 0.663086f, 0.028961f,
+       0.653809f, 0.027161f, 0.644043f, 0.025497f, 0.633301f, 0.023941f, 0.622559f, 0.022491f,
+       0.612305f, 0.021133f, 0.601074f, 0.019867f, 0.590332f, 0.018692f, 0.579102f, 0.017578f,
+       0.111816f, 0.888184f, 0.112000f, 0.887207f, 0.112976f, 0.883789f, 0.115845f, 0.873047f,
+       0.122864f, 0.849609f, 0.133301f, 0.813477f, 0.147217f, 0.770996f, 0.167236f, 0.728027f,
+       0.196411f, 0.688965f, 0.222290f, 0.653320f, 0.258057f, 0.619629f, 0.293457f, 0.587402f,
+       0.328613f, 0.556152f, 0.361328f, 0.524902f, 0.392578f, 0.495850f, 0.430420f, 0.466064f,
+       0.459961f, 0.437744f, 0.482422f, 0.410889f, 0.511230f, 0.385010f, 0.536621f, 0.359863f,
+       0.568848f, 0.336182f, 0.592773f, 0.313721f, 0.614258f, 0.293213f, 0.626953f, 0.273193f,
+       0.646484f, 0.254639f, 0.657227f, 0.237427f, 0.683105f, 0.221191f, 0.693359f, 0.205933f,
+       0.698242f, 0.191772f, 0.709473f, 0.178589f, 0.724609f, 0.166260f, 0.733398f, 0.154907f,
+       0.739746f, 0.144165f, 0.745605f, 0.134399f, 0.750977f, 0.125122f, 0.753906f, 0.116577f,
+       0.754883f, 0.108704f, 0.758301f, 0.101257f, 0.759766f, 0.094482f, 0.757812f, 0.088074f,
+       0.759766f, 0.082092f, 0.758301f, 0.076660f, 0.756348f, 0.071594f, 0.752441f, 0.066833f,
+       0.748047f, 0.062469f, 0.741699f, 0.058380f, 0.736816f, 0.054596f, 0.732910f, 0.051086f,
+       0.726074f, 0.047791f, 0.719727f, 0.044769f, 0.711914f, 0.041901f, 0.704590f, 0.039276f,
+       0.696289f, 0.036804f, 0.688477f, 0.034546f, 0.678711f, 0.032410f, 0.669922f, 0.030411f,
+       0.660156f, 0.028564f, 0.650391f, 0.026840f, 0.640625f, 0.025223f, 0.630371f, 0.023727f,
+       0.619629f, 0.022324f, 0.608887f, 0.020996f, 0.597656f, 0.019775f, 0.586914f, 0.018631f,
+       0.038452f, 0.960938f, 0.039124f, 0.957520f, 0.042480f, 0.933594f, 0.051575f, 0.879395f,
+       0.069275f, 0.824219f, 0.091064f, 0.785156f, 0.126343f, 0.753906f, 0.154419f, 0.725586f,
+       0.192139f, 0.695312f, 0.234375f, 0.663086f, 0.273438f, 0.630371f, 0.305908f, 0.597656f,
+       0.338379f, 0.565430f, 0.379150f, 0.532227f, 0.413818f, 0.501465f, 0.444336f, 0.471191f,
+       0.471436f, 0.442383f, 0.504395f, 0.414795f, 0.531250f, 0.388672f, 0.547363f, 0.364014f,
+       0.579590f, 0.340088f, 0.603516f, 0.317627f, 0.622559f, 0.297119f, 0.635742f, 0.276855f,
+       0.669434f, 0.258301f, 0.670410f, 0.241089f, 0.685547f, 0.224854f, 0.699219f, 0.209717f,
+       0.712402f, 0.195190f, 0.720703f, 0.182373f, 0.729980f, 0.169678f, 0.746582f, 0.158325f,
+       0.744629f, 0.147705f, 0.748535f, 0.137695f, 0.760254f, 0.128296f, 0.757812f, 0.119629f,
+       0.761230f, 0.111755f, 0.762207f, 0.104248f, 0.764160f, 0.097290f, 0.763184f, 0.090881f,
+       0.762207f, 0.084900f, 0.760742f, 0.079285f, 0.759766f, 0.074097f, 0.755859f, 0.069275f,
+       0.752930f, 0.064758f, 0.747559f, 0.060669f, 0.742676f, 0.056793f, 0.737305f, 0.053131f,
+       0.731445f, 0.049774f, 0.725586f, 0.046661f, 0.718262f, 0.043732f, 0.710449f, 0.041077f,
+       0.702637f, 0.038544f, 0.694336f, 0.036163f, 0.685547f, 0.033966f, 0.676758f, 0.031921f,
+       0.667480f, 0.030014f, 0.657715f, 0.028229f, 0.647461f, 0.026566f, 0.637207f, 0.025009f,
+       0.626953f, 0.023544f, 0.616699f, 0.022186f, 0.605957f, 0.020920f, 0.594727f, 0.019730f
+};
 #endif  /* __EEVEE_LUT_H__ */
index 59029b1f1afad9ac378550492ca6067ae660ed9e..c98e0b6529b845ea47be9006e7263cebf28c9c61 100644 (file)
@@ -33,7 +33,14 @@ struct Object;
 #define MAX_CASCADE_NUM 4
 
 typedef struct EEVEE_PassList {
+       /* Shadows */
        struct DRWPass *shadow_pass;
+
+       /* Probes */
+       struct DRWPass *probe_background;
+       struct DRWPass *probe_prefilter;
+       struct DRWPass *probe_sh;
+
        struct DRWPass *depth_pass;
        struct DRWPass *depth_pass_cull;
        struct DRWPass *pass;
@@ -41,17 +48,29 @@ typedef struct EEVEE_PassList {
 } EEVEE_PassList;
 
 typedef struct EEVEE_FramebufferList {
-       struct GPUFrameBuffer *main; /* HDR */
+       /* Shadows */
        struct GPUFrameBuffer *shadow_cube_fb;
        struct GPUFrameBuffer *shadow_map_fb;
        struct GPUFrameBuffer *shadow_cascade_fb;
+       /* Probes */
+       struct GPUFrameBuffer *probe_fb;
+       struct GPUFrameBuffer *probe_filter_fb;
+       struct GPUFrameBuffer *probe_sh_fb;
+
+       struct GPUFrameBuffer *main; /* HDR */
 } EEVEE_FramebufferList;
 
 typedef struct EEVEE_TextureList {
-       struct GPUTexture *color; /* R11_G11_B10 */
+       /* Shadows */
        struct GPUTexture *shadow_depth_cube_pool;
        struct GPUTexture *shadow_depth_map_pool;
        struct GPUTexture *shadow_depth_cascade_pool;
+       /* Probes */
+       struct GPUTexture *probe_rt; /* R16_G16_B16 */
+       struct GPUTexture *probe_depth_rt;
+       struct GPUTexture *probe_pool; /* R11_G11_B10 */
+
+       struct GPUTexture *color; /* R16_G16_B16 */
 } EEVEE_TextureList;
 
 typedef struct EEVEE_StorageList {
@@ -61,6 +80,9 @@ typedef struct EEVEE_StorageList {
        struct GPUUniformBuffer *light_ubo;
        struct GPUUniformBuffer *shadow_ubo;
 
+       /* Probes */
+       struct EEVEE_ProbesInfo *probes;
+
        struct g_data *g_data;
 } EEVEE_StorageList;
 
@@ -111,6 +133,20 @@ typedef struct EEVEE_LampsInfo {
        struct EEVEE_ShadowMap     shadow_map_data[MAX_SHADOW_MAP];
        struct EEVEE_ShadowCascade shadow_cascade_data[MAX_SHADOW_CASCADE];
 } EEVEE_LampsInfo;
+
+/* ************ PROBE DATA ************* */
+typedef struct EEVEE_ProbesInfo {
+       /* For rendering probes */
+       float probemat[6][4][4];
+       int layer;
+       float samples_ct;
+       float invsamples_ct;
+       float roughness;
+       float lodfactor;
+       float lodmax;
+       struct GPUTexture *backgroundtex;
+} EEVEE_ProbesInfo;
+
 /* *********************************** */
 
 typedef struct EEVEE_Data {
@@ -131,11 +167,7 @@ typedef struct g_data{
        struct DRWShadingGroup *default_lit_grp;
        struct DRWShadingGroup *shadow_shgrp;
        struct DRWShadingGroup *depth_shgrp;
-       struct DRWShadingGroup *depth_shgrp_select;
-       struct DRWShadingGroup *depth_shgrp_active;
        struct DRWShadingGroup *depth_shgrp_cull;
-       struct DRWShadingGroup *depth_shgrp_cull_select;
-       struct DRWShadingGroup *depth_shgrp_cull_active;
 
        struct ListBase lamps; /* Lamps gathered during cache iteration */
 } g_data; /* Transient data */
@@ -146,4 +178,54 @@ void EEVEE_lights_cache_init(EEVEE_StorageList *stl);
 void EEVEE_lights_cache_add(EEVEE_StorageList *stl, struct Object *ob);
 void EEVEE_lights_cache_finish(EEVEE_StorageList *stl, EEVEE_TextureList *txl, EEVEE_FramebufferList *fbl);
 void EEVEE_lights_update(EEVEE_StorageList *stl);
-void EEVEE_draw_shadows(EEVEE_Data *vedata);
\ No newline at end of file
+void EEVEE_draw_shadows(EEVEE_Data *vedata);
+
+/* eevee_probes.c */
+void EEVEE_probes_init(EEVEE_Data *vedata);
+void EEVEE_probes_cache_init(EEVEE_Data *vedata);
+void EEVEE_probes_cache_add(EEVEE_Data *vedata, Object *ob);
+void EEVEE_probes_cache_finish(EEVEE_Data *vedata);
+void EEVEE_probes_update(EEVEE_Data *vedata);
+void EEVEE_refresh_probe(EEVEE_Data *vedata);
+
+/* Shadow Matrix */
+static const float texcomat[4][4] = { /* From NDC to TexCo */
+       {0.5, 0.0, 0.0, 0.0},
+       {0.0, 0.5, 0.0, 0.0},
+       {0.0, 0.0, 0.5, 0.0},
+       {0.5, 0.5, 0.5, 1.0}
+};
+
+/* Cubemap Matrices */
+static const float cubefacemat[6][4][4] = {
+       /* Pos X */
+       {{0.0, 0.0, -1.0, 0.0},
+        {0.0, -1.0, 0.0, 0.0},
+        {-1.0, 0.0, 0.0, 0.0},
+        {0.0, 0.0, 0.0, 1.0}},
+       /* Neg X */
+       {{0.0, 0.0, 1.0, 0.0},
+        {0.0, -1.0, 0.0, 0.0},
+        {1.0, 0.0, 0.0, 0.0},
+        {0.0, 0.0, 0.0, 1.0}},
+       /* Pos Y */
+       {{1.0, 0.0, 0.0, 0.0},
+        {0.0, 0.0, 1.0, 0.0},
+        {0.0, -1.0, 0.0, 0.0},
+        {0.0, 0.0, 0.0, 1.0}},
+       /* Neg Y */
+       {{1.0, 0.0, 0.0, 0.0},
+        {0.0, 0.0, -1.0, 0.0},
+        {0.0, 1.0, 0.0, 0.0},
+        {0.0, 0.0, 0.0, 1.0}},
+       /* Pos Z */
+       {{1.0, 0.0, 0.0, 0.0},
+        {0.0, -1.0, 0.0, 0.0},
+        {0.0, 0.0, -1.0, 0.0},
+        {0.0, 0.0, 0.0, 1.0}},
+       /* Neg Z */
+       {{-1.0, 0.0, 0.0, 0.0},
+        {0.0, -1.0, 0.0, 0.0},
+        {0.0, 0.0, 1.0, 0.0},
+        {0.0, 0.0, 0.0, 1.0}},
+};
diff --git a/source/blender/draw/engines/eevee/eevee_probes.c b/source/blender/draw/engines/eevee/eevee_probes.c
new file mode 100644 (file)
index 0000000..78e1a0c
--- /dev/null
@@ -0,0 +1,209 @@
+/*
+ * Copyright 2016, Blender Foundation.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * Contributor(s): Blender Institute
+ *
+ */
+
+/** \file eevee_lights.c
+ *  \ingroup DNA
+ */
+
+#include "DNA_world_types.h"
+#include "DNA_texture_types.h"
+#include "DNA_image_types.h"
+
+#include "DRW_render.h"
+
+#include "eevee.h"
+#include "eevee_private.h"
+#include "GPU_texture.h"
+#include "GPU_glew.h"
+
+typedef struct EEVEE_ProbeData {
+       short probe_id, shadow_id;
+} EEVEE_ProbeData;
+
+/* TODO Option */
+#define PROBE_SIZE 512
+
+/* *********** FUNCTIONS *********** */
+
+void EEVEE_probes_init(EEVEE_Data *vedata)
+{
+       EEVEE_StorageList *stl = vedata->stl;
+       EEVEE_FramebufferList *fbl = vedata->fbl;
+       EEVEE_TextureList *txl = vedata->txl;
+
+       if (!stl->probes) {
+               stl->probes       = MEM_callocN(sizeof(EEVEE_ProbesInfo), "EEVEE_ProbesInfo");
+       }
+
+       if (!txl->probe_rt) {
+               float *test_tex;
+               const float face_col[6][4] = {{1.0f, 0.0f, 0.0f, 1.0f}, {0.0f, 1.0f, 0.0f, 1.0f}, {0.0f, 0.0f, 1.0f, 1.0f},
+                                             {1.0f, 0.0f, 1.0f, 1.0f}, {1.0f, 1.0f, 0.0f, 1.0f}, {0.0f, 1.0f, 1.0f, 1.0f}};
+
+               test_tex = MEM_mallocN(sizeof(float) * 6 * PROBE_SIZE * PROBE_SIZE * 4, "test tex");
+
+               for (int i = 0; i < 6; ++i)     {
+                       for (int j = 0; j < PROBE_SIZE * PROBE_SIZE; ++j) {
+                               copy_v4_v4(test_tex + i * PROBE_SIZE * PROBE_SIZE * 4 + j * 4, face_col[i]);
+                       }
+               }
+
+               txl->probe_rt = DRW_texture_create_cube(PROBE_SIZE, DRW_TEX_RGBA_16, DRW_TEX_FILTER | DRW_TEX_MIPMAP, (float *)test_tex);
+               txl->probe_depth_rt = DRW_texture_create_cube(PROBE_SIZE, DRW_TEX_DEPTH_24, DRW_TEX_FILTER, NULL);
+
+               MEM_freeN(test_tex);
+       }
+
+       DRWFboTexture tex_probe[2] = {{&txl->probe_depth_rt, DRW_BUF_DEPTH_24, DRW_TEX_FILTER},
+                                     {&txl->probe_rt, DRW_BUF_RGBA_16, DRW_TEX_FILTER | DRW_TEX_MIPMAP}};
+
+       DRW_framebuffer_init(&fbl->probe_fb, PROBE_SIZE, PROBE_SIZE, tex_probe, 2);
+
+       if (!txl->probe_pool) {
+               float *test_tex;
+               const float face_col[6][4] = {{1.0f, 0.0f, 0.0f, 1.0f}, {0.0f, 1.0f, 0.0f, 1.0f}, {0.0f, 0.0f, 1.0f, 1.0f},
+                                             {1.0f, 0.0f, 1.0f, 1.0f}, {1.0f, 1.0f, 0.0f, 1.0f}, {0.0f, 1.0f, 1.0f, 1.0f}};
+
+               test_tex = MEM_mallocN(sizeof(float) * 6 * PROBE_SIZE * PROBE_SIZE * 4, "test tex");
+
+               for (int i = 0; i < 6; ++i)     {
+                       for (int j = 0; j < PROBE_SIZE * PROBE_SIZE; ++j) {
+                               copy_v4_v4(test_tex + i * PROBE_SIZE * PROBE_SIZE * 4 + j * 4, face_col[i]);
+                       }
+               }
+
+               /* TODO array */
+               txl->probe_pool = DRW_texture_create_cube(PROBE_SIZE, DRW_TEX_RGBA_16, DRW_TEX_FILTER | DRW_TEX_MIPMAP, (float *)test_tex);
+               MEM_freeN(test_tex);
+       }
+
+       DRWFboTexture tex_filter = {&txl->probe_pool, DRW_BUF_RGBA_16, DRW_TEX_FILTER | DRW_TEX_MIPMAP};
+
+       DRW_framebuffer_init(&fbl->probe_filter_fb, PROBE_SIZE, PROBE_SIZE, &tex_filter, 1);
+}
+
+void EEVEE_probes_cache_init(EEVEE_Data *UNUSED(vedata))
+{
+       return;
+}
+
+void EEVEE_probes_cache_add(EEVEE_Data *UNUSED(vedata), Object *UNUSED(ob))
+{
+       return;
+}
+
+void EEVEE_probes_cache_finish(EEVEE_Data *UNUSED(vedata))
+{
+       return;
+}
+
+void EEVEE_probes_update(EEVEE_Data *UNUSED(vedata))
+{
+       return;
+}
+
+void EEVEE_refresh_probe(EEVEE_Data *vedata)
+{
+       EEVEE_FramebufferList *fbl = vedata->fbl;
+       EEVEE_TextureList *txl = vedata->txl;
+       EEVEE_PassList *psl = vedata->psl;
+       EEVEE_StorageList *stl = vedata->stl;
+       EEVEE_ProbesInfo *pinfo = stl->probes;
+
+       const bContext *C = DRW_get_context();
+       Scene *scene = CTX_data_scene(C);
+       World *world = scene->world;
+
+       float projmat[4][4];
+
+       /* 1 - Render to cubemap target using geometry shader. */
+       /* We don't need to clear since we render the background. */
+       pinfo->layer = 0;
+       perspective_m4(projmat, -0.1f, 0.1f, -0.1f, 0.1f, 0.1f, 100.0f);
+       for (int i = 0; i < 6; ++i) {
+               mul_m4_m4m4(pinfo->probemat[i], projmat, cubefacemat[i]);
+       }
+
+       /* Debug Tex : Use World 1st Tex Slot */
+       if (world && world->mtex[0]) {
+               MTex *mtex = world->mtex[0];
+               if (mtex && mtex->tex) {
+                       Tex *tex = mtex->tex;
+                       if (tex->ima) {
+                               pinfo->backgroundtex = GPU_texture_from_blender(tex->ima, &tex->iuser, GL_TEXTURE_2D, true, 0.0, 0);
+
+                               DRW_framebuffer_bind(fbl->probe_fb);
+                               DRW_draw_pass(psl->probe_background);
+                       }
+               }
+       }
+
+       /* 2 - Let gpu create Mipmaps for Filtered Importance Sampling. */
+       /* Bind next framebuffer to be able to write to probe_rt. */
+       DRW_framebuffer_bind(fbl->probe_filter_fb);
+       DRW_texture_generate_mipmaps(txl->probe_rt);
+
+       /* 3 - Render to probe array to the specified layer, do prefiltering. */
+       /* Detach to rebind the right mipmap. */
+       DRW_framebuffer_texture_detach(txl->probe_pool);
+       float mipsize = PROBE_SIZE * 2;
+       int miplevels = 1 + (int)floorf(log2f(PROBE_SIZE));
+       for (int i = 0; i < miplevels - 2; i++) {
+               float bias = (i == 0) ? 0.0f : 1.0f;
+
+               mipsize /= 2;
+               CLAMP_MIN(mipsize, 1);
+
+               pinfo->layer = 0;
+               pinfo->roughness = (float)i / ((float)miplevels - 3.0f);
+               pinfo->roughness *= pinfo->roughness; /* Disney Roughness */
+               pinfo->roughness *= pinfo->roughness; /* Distribute Roughness accros lod more evenly */
+               CLAMP(pinfo->roughness, 1e-8f, 0.99999f); /* Avoid artifacts */
+
+#if 1 /* Variable Sample count (fast) */
+               switch (i) {
+                       case 0: pinfo->samples_ct = 1.0f; break;
+                       case 1: pinfo->samples_ct = 16.0f; break;
+                       case 2: pinfo->samples_ct = 32.0f; break;
+                       case 3: pinfo->samples_ct = 64.0f; break;
+                       default: pinfo->samples_ct = 128.0f; break;
+               }
+#else /* Constant Sample count (slow) */
+               pinfo->samples_ct = 1024.0f;
+#endif
+
+               pinfo->invsamples_ct = 1.0f / pinfo->samples_ct;
+               pinfo->lodfactor = bias + 0.5f * log((float)(PROBE_SIZE * PROBE_SIZE) * pinfo->invsamples_ct) / log(2);
+               pinfo->lodmax = (float)miplevels - 3.0f;
+
+               DRW_framebuffer_texture_attach(fbl->probe_filter_fb, txl->probe_pool, 0, i);
+               DRW_framebuffer_viewport_size(fbl->probe_filter_fb, mipsize, mipsize);
+               DRW_draw_pass(psl->probe_prefilter);
+               DRW_framebuffer_texture_detach(txl->probe_pool);
+       }
+       /* reattach to have a valid framebuffer. */
+       DRW_framebuffer_texture_attach(fbl->probe_filter_fb, txl->probe_pool, 0, 0);
+
+       /* 4 - Compute spherical harmonics */
+       /* TODO */
+       // DRW_framebuffer_bind(fbl->probe_sh_fb);
+       // DRW_draw_pass(psl->probe_sh);
+}
index ef684e3b9708ed39174349883aa3ee47134fb033..96402f5ada2d128409875ffa82e4f61aa069ea69 100644 (file)
@@ -1,5 +1,6 @@
 
 #define M_PI        3.14159265358979323846  /* pi */
+#define M_PI_2      1.57079632679489661923  /* pi/2 */
 #define M_1_PI      0.318309886183790671538  /* 1/pi */
 #define M_1_2PI     0.159154943091895335768  /* 1/(2*pi) */
 #define M_1_PI2     0.101321183642337771443  /* 1/(pi^2) */
@@ -52,6 +53,10 @@ struct ShadowMapData {
 #define sh_map_far    near_far_bias.y
 #define sh_map_bias   near_far_bias.z
 
+#ifndef MAX_CASCADE_NUM
+#define MAX_CASCADE_NUM 1
+#endif
+
 struct ShadowCascadeData {
        mat4 shadowmat[MAX_CASCADE_NUM];
        vec4 bias_count;
@@ -98,26 +103,6 @@ float hypot(float x, float y) { return sqrt(x*x + y*y); }
 
 float inverse_distance(vec3 V) { return max( 1 / length(V), 1e-8); }
 
-float linear_depth(float z, float zf, float zn)
-{
-       if (gl_ProjectionMatrix[3][3] == 0.0) {
-               return (zn  * zf) / (z * (zn - zf) + zf);
-       }
-       else {
-               return (z * 2.0 - 1.0) * zf;
-       }
-}
-
-float buffer_depth(float z, float zf, float zn)
-{
-       if (gl_ProjectionMatrix[3][3] == 0.0) {
-               return (zf * (zn - z)) / (z * (zn - zf));
-       }
-       else {
-               return (z / (zf * 2.0)) + 0.5;
-       }
-}
-
 float line_plane_intersect_dist(vec3 lineorigin, vec3 linedirection, vec3 planeorigin, vec3 planenormal)
 {
        return dot(planenormal, planeorigin - lineorigin) / dot(planenormal, linedirection);
@@ -149,6 +134,45 @@ vec3 line_aligned_plane_intersect(vec3 lineorigin, vec3 linedirection, vec3 plan
        return lineorigin + linedirection * dist;
 }
 
+/* -- Tangent Space conversion -- */
+vec3 tangent_to_world(vec3 vector, vec3 N, vec3 T, vec3 B)
+{
+       return T * vector.x + B * vector.y + N * vector.z;
+}
+
+vec3 world_to_tangent(vec3 vector, vec3 N, vec3 T, vec3 B)
+{
+       return vec3( dot(T, vector), dot(B, vector), dot(N, vector));
+}
+
+void make_orthonormal_basis(vec3 N, out vec3 T, out vec3 B)
+{
+       vec3 UpVector = abs(N.z) < 0.99999 ? vec3(0.0,0.0,1.0) : vec3(1.0,0.0,0.0);
+       T = normalize( cross(UpVector, N) );
+       B = cross(N, T);
+}
+
+/* ---- Opengl Depth conversion ---- */
+float linear_depth(float z, float zf, float zn)
+{
+       if (gl_ProjectionMatrix[3][3] == 0.0) {
+               return (zn  * zf) / (z * (zn - zf) + zf);
+       }
+       else {
+               return (z * 2.0 - 1.0) * zf;
+       }
+}
+
+float buffer_depth(float z, float zf, float zn)
+{
+       if (gl_ProjectionMatrix[3][3] == 0.0) {
+               return (zf * (zn - z)) / (z * (zn - zf));
+       }
+       else {
+               return (z / (zf * 2.0)) + 0.5;
+       }
+}
+
 float rectangle_solid_angle(AreaData ad)
 {
        vec3 n0 = normalize(cross(ad.corner[0], ad.corner[1]));
@@ -166,7 +190,9 @@ float rectangle_solid_angle(AreaData ad)
 
 vec3 get_specular_dominant_dir(vec3 N, vec3 R, float roughness)
 {
-       return normalize(mix(N, R, 1.0 - roughness * roughness));
+       float smoothness = 1.0 - roughness;
+       float fac = smoothness * (sqrt(smoothness) + roughness);
+       return normalize(mix(N, R, fac));
 }
 
 /* From UE4 paper */
index afa87dfb2c8e2e4cdbdc67ea3c497c2b0d99324a..105b637c37158443c5ff384f28d23a190ea24f28 100644 (file)
@@ -129,7 +129,7 @@ float direct_ggx_sphere(LightData ld, ShadingData sd, float roughness)
        bsdf *= 1.25331413731;
 #endif
 
-       bsdf *= texture(ltcMag, uv).r; /* Bsdf intensity */
+       bsdf *= texture(brdfLut, uv).b; /* Bsdf intensity */
        bsdf *= M_1_2PI * M_1_PI;
 #else
        float energy_conservation;
@@ -150,7 +150,7 @@ float direct_ggx_rectangle(LightData ld, ShadingData sd, float roughness)
        mat3 ltcmat = ltc_matrix(uv);
 
        float bsdf = ltc_evaluate(sd.N, sd.V, ltcmat, sd.area_data.corner);
-       bsdf *= texture(ltcMag, uv).r; /* Bsdf intensity */
+       bsdf *= texture(brdfLut, uv).b; /* Bsdf intensity */
        bsdf *= M_1_2PI;
 #else
        float energy_conservation;
diff --git a/source/blender/draw/engines/eevee/shaders/bsdf_lut_frag.glsl b/source/blender/draw/engines/eevee/shaders/bsdf_lut_frag.glsl
new file mode 100644 (file)
index 0000000..b8fac61
--- /dev/null
@@ -0,0 +1,46 @@
+
+out vec4 FragColor;
+
+void main() {
+       vec3 N, T, B, V;
+
+       float NV = ( 1.0 - (clamp(gl_FragCoord.y / BRDF_LUT_SIZE, 1e-4, 0.9999)));
+       float sqrtRoughness = clamp(gl_FragCoord.x / BRDF_LUT_SIZE, 1e-4, 0.9999);
+       float a = sqrtRoughness * sqrtRoughness;
+       float a2 = a * a;
+
+       N = vec3(0.0, 0.0, 1.0);
+       T = vec3(1.0, 0.0, 0.0);
+       B = vec3(0.0, 1.0, 0.0);
+       V = vec3(sqrt(1.0 - NV * NV), 0.0, NV);
+
+       setup_noise();
+
+       /* Integrating BRDF */
+       float brdf_accum = 0.0;
+       float fresnel_accum = 0.0;
+       for (float i = 0; i < sampleCount; i++) {
+               vec3 H = sample_ggx(i, a2, N, T, B); /* Microfacet normal */
+               vec3 L = -reflect(V, H);
+               float NL = L.z;
+
+               if (NL > 0.0) {
+                       float NH = max(H.z, 0.0);
+                       float VH = max(dot(V, H), 0.0);
+
+                       float G1_v = G1_Smith_GGX(NV, a2);
+                       float G1_l = G1_Smith_GGX(NL, a2);
+                       float G_smith = 4.0 * NV * NL / (G1_v * G1_l); /* See G1_Smith_GGX for explanations. */
+
+                       float brdf = (G_smith * VH) / (NH * NV);
+                       float Fc = pow(1.0 - VH, 5.0);
+
+                       brdf_accum += (1.0 - Fc) * brdf;
+                       fresnel_accum += Fc * brdf;
+               }
+       }
+       brdf_accum /= sampleCount;
+       fresnel_accum /= sampleCount;
+
+       FragColor = vec4(brdf_accum, fresnel_accum, 0.0, 1.0);
+}
\ No newline at end of file
diff --git a/source/blender/draw/engines/eevee/shaders/bsdf_sampling_lib.glsl b/source/blender/draw/engines/eevee/shaders/bsdf_sampling_lib.glsl
new file mode 100644 (file)
index 0000000..da14a2d
--- /dev/null
@@ -0,0 +1,54 @@
+
+uniform sampler1D texHammersley;
+uniform sampler2D texJitter;
+uniform float sampleCount;
+uniform float invSampleCount;
+
+vec2 jitternoise = vec2(0.0);
+
+void setup_noise(void)
+{
+       jitternoise = texture(texJitter, gl_FragCoord.xy / NOISE_SIZE, 0).rg; /* Global variable */
+}
+
+vec3 hammersley_3d(float i, float invsamplenbr)
+{
+       vec3 Xi; /* Theta, cos(Phi), sin(Phi) */
+
+       Xi.x = i * invsamplenbr; /* i/samples */
+       Xi.x = fract(Xi.x + jitternoise.x);
+
+       int u = int(mod(i + jitternoise.y * HAMMERSLEY_SIZE, HAMMERSLEY_SIZE));
+
+       Xi.yz = texelFetch(texHammersley, u, 0).rg;
+
+       return Xi;
+}
+
+vec3 hammersley_3d(float i)
+{
+       return hammersley_3d(i, invSampleCount);
+}
+
+/* -------------- BSDFS -------------- */
+
+float pdf_ggx_reflect(float NH, float a2)
+{
+       return NH * a2 / D_ggx_opti(NH, a2);
+}
+
+vec3 sample_ggx(float nsample, float a2, vec3 N, vec3 T, vec3 B)
+{
+       vec3 Xi = hammersley_3d(nsample);
+
+       /* Theta is the aperture angle of the cone */
+       float z = sqrt( (1.0 - Xi.x) / ( 1.0 + a2 * Xi.x - Xi.x ) ); /* cos theta */
+       float r = sqrt( 1.0 - z * z ); /* sin theta */
+       float x = r * Xi.y;
+       float y = r * Xi.z;
+
+       /* Microfacet Normal */
+       vec3 Ht = vec3(x, y, z);
+
+       return tangent_to_world(Ht, N, T, B);
+}
index 6c62e7c2e473b6aa9eabfb0922fc6c848b4f562a..9bd8dba452dbc2185e43b6c768997935822b5d8c 100644 (file)
@@ -3,6 +3,13 @@ uniform int light_count;
 uniform vec3 cameraPos;
 uniform vec3 eye;
 uniform mat4 ProjectionMatrix;
+
+uniform samplerCube probeFiltered;
+uniform float lodMax;
+
+#ifndef USE_LTC
+uniform sampler2D brdfLut;
+#endif
 uniform sampler2DArrayShadow shadowCubes;
 uniform sampler2DArrayShadow shadowMaps;
 // uniform sampler2DArrayShadow shadowCascades;
@@ -190,13 +197,16 @@ void main()
        sd.R = reflect(-sd.V, sd.N);
 
        /* hardcoded test vars */
-       vec3 albedo = vec3(0.8);
-       vec3 specular = mix(vec3(0.03), vec3(1.0), pow(max(0.0, 1.0 - dot(sd.N, sd.V)), 5.0));
-       float roughness = 0.1;
+       vec3 albedo = vec3(0.0);
+       vec3 f0 = mix(vec3(0.83, 0.5, 0.1), vec3(0.03, 0.03, 0.03), saturate(worldPosition.y/2));
+       vec3 specular = mix(f0, vec3(1.0), pow(max(0.0, 1.0 - dot(sd.N, sd.V)), 5.0));
+       float roughness = saturate(worldPosition.x/lodMax);
 
        sd.spec_dominant_dir = get_specular_dominant_dir(sd.N, sd.R, roughness);
 
        vec3 radiance = vec3(0.0);
+
+       /* Analitic Lights */
        for (int i = 0; i < MAX_LIGHT && i < light_count; ++i) {
                LightData ld = lights_data[i];
 
@@ -212,5 +222,11 @@ void main()
                radiance += vis * (albedo * diff + specular * spec) * ld.l_color;
        }
 
+       /* Envmaps */
+       vec2 uv = ltc_coords(dot(sd.N, sd.V), sqrt(roughness));
+       vec2 brdf_lut = texture(brdfLut, uv).rg;
+       vec3 Li = textureLod(probeFiltered, sd.spec_dominant_dir, roughness * lodMax).rgb;
+       radiance += Li * brdf_lut.y + f0 * Li * brdf_lut.x;
+
        fragColor = vec4(radiance, 1.0);
 }
\ No newline at end of file
index 131b0c2de7865498b49b878504e4c6bb95364e1f..279b18313e76acc19e23967d8f31c2240f834598 100644 (file)
@@ -4,7 +4,7 @@
 #define LTC_LUT_SIZE 64
 
 uniform sampler2D ltcMat;
-uniform sampler2D ltcMag;
+uniform sampler2D brdfLut;
 
 /* from Real-Time Area Lighting: a Journey from Research to Production
  * Stephen Hill and Eric Heitz */
diff --git a/source/blender/draw/engines/eevee/shaders/probe_filter_frag.glsl b/source/blender/draw/engines/eevee/shaders/probe_filter_frag.glsl
new file mode 100644 (file)
index 0000000..553b0a0
--- /dev/null
@@ -0,0 +1,49 @@
+
+uniform samplerCube probeHdr;
+uniform float roughnessSquared;
+uniform float lodFactor;
+uniform float lodMax;
+
+in vec3 worldPosition;
+
+out vec4 FragColor;
+
+void main() {
+       vec3 N, T, B, V;
+
+       vec3 R = normalize(worldPosition);
+
+       /* Isotropic assumption */
+       N = V = R;
+
+       make_orthonormal_basis(N, T, B); /* Generate tangent space */
+
+       /* Noise to dither the samples */
+       /* Note : ghosting is better looking than noise. */
+       // setup_noise();
+
+       /* Integrating Envmap */
+       float weight = 0.0;
+       vec3 out_radiance = vec3(0.0);
+       for (float i = 0; i < sampleCount; i++) {
+               vec3 H = sample_ggx(i, roughnessSquared, N, T, B); /* Microfacet normal */
+               vec3 L = -reflect(V, H);
+               float NL = dot(N, L);
+
+               if (NL > 0.0) {
+                       float NH = max(1e-8, dot(N, H)); /* cosTheta */
+
+                       /* Coarse Approximation of the mapping distortion
+                        * Unit Sphere -> Cubemap Face */
+                       const float dist = 4.0 * M_PI / 6.0;
+                       float pdf = pdf_ggx_reflect(NH, roughnessSquared);
+                       /* http://http.developer.nvidia.com/GPUGems3/gpugems3_ch20.html : Equation 13 */
+                       float lod = clamp(lodFactor - 0.5 * log2(pdf * dist), 0.0, lodMax) ;
+
+                       out_radiance += textureCubeLod(probeHdr, L, lod).rgb * NL;
+                       weight += NL;
+               }
+       }
+
+       FragColor = vec4(out_radiance / weight, 1.0);
+}
\ No newline at end of file
diff --git a/source/blender/draw/engines/eevee/shaders/probe_frag.glsl b/source/blender/draw/engines/eevee/shaders/probe_frag.glsl
new file mode 100644 (file)
index 0000000..1a2d2f4
--- /dev/null
@@ -0,0 +1,26 @@
+
+in vec3 worldPosition;
+
+uniform sampler2D probeLatLong;
+
+out vec4 FragColor;
+
+float hypot(float x, float y) { return sqrt(x*x + y*y); }
+
+void node_tex_environment_equirectangular(vec3 co, sampler2D ima, out vec4 color)
+{
+       vec3 nco = normalize(co);
+       float u = -atan(nco.y, nco.x) / (2.0 * 3.1415) + 0.5;
+       float v = atan(nco.z, hypot(nco.x, nco.y)) / 3.1415 + 0.5;
+
+       color = texture2D(ima, vec2(u, v));
+}
+
+void main() {
+       vec3 L = normalize(worldPosition);
+       vec2 uvs = gl_FragCoord.xy / 256.0;
+       float dist = dot(L, vec3(0.0,1.0,0.0));
+       dist = (dist > 0.99) ? 1e1 : 0.0;
+       FragColor = vec4(dist,dist,dist, 1.0);
+       node_tex_environment_equirectangular(L, probeLatLong, FragColor);
+}
\ No newline at end of file
diff --git a/source/blender/draw/engines/eevee/shaders/probe_geom.glsl b/source/blender/draw/engines/eevee/shaders/probe_geom.glsl
new file mode 100644 (file)
index 0000000..ad11297
--- /dev/null
@@ -0,0 +1,28 @@
+
+layout(triangles) in;
+layout(triangle_strip, max_vertices=3) out;
+
+uniform int Layer;
+
+in vec4 vPos[];
+in int face[];
+
+out vec3 worldPosition;
+out vec3 worldNormal;
+
+const vec3 maj_axes[6] = vec3[6](vec3(1.0,  0.0,  0.0), vec3(-1.0,  0.0, 0.0), vec3(0.0, 1.0, 0.0), vec3(0.0, -1.0,  0.0), vec3( 0.0,  0.0, 1.0), vec3( 0.0,  0.0, -1.0));
+const vec3 x_axis[6]   = vec3[6](vec3(0.0,  0.0, -1.0), vec3( 0.0,  0.0, 1.0), vec3(1.0, 0.0, 0.0), vec3(1.0,  0.0,  0.0), vec3( 1.0,  0.0, 0.0), vec3(-1.0,  0.0,  0.0));
+const vec3 y_axis[6]   = vec3[6](vec3(0.0, -1.0,  0.0), vec3( 0.0, -1.0, 0.0), vec3(0.0, 0.0, 1.0), vec3(0.0,  0.0, -1.0), vec3( 0.0, -1.0, 0.0), vec3( 0.0, -1.0,  0.0));
+
+void main() {
+       int f = face[0];
+       gl_Layer = Layer + f;
+
+       for (int v = 0; v < 3; ++v) {
+               gl_Position = vPos[v];
+               worldPosition = x_axis[f] * vPos[v].x + y_axis[f] * vPos[v].y + maj_axes[f];
+               EmitVertex();
+       }
+
+       EndPrimitive();
+}
\ No newline at end of file
diff --git a/source/blender/draw/engines/eevee/shaders/probe_vert.glsl b/source/blender/draw/engines/eevee/shaders/probe_vert.glsl
new file mode 100644 (file)
index 0000000..16b66a5
--- /dev/null
@@ -0,0 +1,10 @@
+
+in vec3 pos;
+
+out vec4 vPos;
+out int face;
+
+void main() {
+       vPos = vec4(pos, 1.0);
+       face = gl_InstanceID;
+}
\ No newline at end of file
index 1adf2ccfab9ec2755a2241095ca1a9f0e9d3bf06..c7f4d4ba7778900bb5e86fbfe2501bd579dbc914 100644 (file)
@@ -1,5 +1,4 @@
 
-uniform mat4 ShadowMatrix;
 uniform mat4 ModelMatrix;
 
 in vec3 pos;
index eba5ce2f0f77bc2f9404b13b4e495a14c30edb52..54ab5ee90028b862930932a0382b8a5f4bbc278f 100644 (file)
@@ -142,6 +142,7 @@ typedef enum {
        DRW_TEX_FILTER = (1 << 0),
        DRW_TEX_WRAP = (1 << 1),
        DRW_TEX_COMPARE = (1 << 2),
+       DRW_TEX_MIPMAP = (1 << 3),
 } DRWTextureFlag;
 
 struct GPUTexture *DRW_texture_create_1D(
@@ -152,6 +153,7 @@ struct GPUTexture *DRW_texture_create_2D_array(
         int w, int h, int d, DRWTextureFormat format, DRWTextureFlag flags, const float *fpixels);
 struct GPUTexture *DRW_texture_create_cube(
         int w, DRWTextureFormat format, DRWTextureFlag flags, const float *fpixels);
+void DRW_texture_generate_mipmaps(struct GPUTexture *tex);
 void DRW_texture_free(struct GPUTexture *tex);
 #define DRW_TEXTURE_FREE_SAFE(tex) do { \
        if (tex != NULL) { \
@@ -176,9 +178,6 @@ void DRW_uniformbuffer_free(struct GPUUniformBuffer *ubo);
 #define DRW_BUF_RG_8                   6
 #define DRW_BUF_RG_16                  7
 #define DRW_BUF_RG_32                  8
-#define DRW_BUF_RGB_8                  9
-#define DRW_BUF_RGB_16                 10
-#define DRW_BUF_RGB_32                 11
 #define DRW_BUF_RGBA_8                 12
 #define DRW_BUF_RGBA_16                        13
 #define DRW_BUF_RGBA_32                        14
@@ -194,9 +193,10 @@ typedef struct DRWFboTexture {
 void DRW_framebuffer_init(struct GPUFrameBuffer **fb, int width, int height, DRWFboTexture textures[MAX_FBO_TEX], int texnbr);
 void DRW_framebuffer_bind(struct GPUFrameBuffer *fb);
 void DRW_framebuffer_clear(bool color, bool depth, bool stencil, float clear_col[4], float clear_depth);
-void DRW_framebuffer_texture_attach(struct GPUFrameBuffer *fb, struct GPUTexture *tex, int slot);
+void DRW_framebuffer_texture_attach(struct GPUFrameBuffer *fb, struct GPUTexture *tex, int slot, int mip);
 void DRW_framebuffer_texture_detach(struct GPUTexture *tex);
 void DRW_framebuffer_blit(struct GPUFrameBuffer *fb_read, struct GPUFrameBuffer *fb_write, bool depth);
+void DRW_framebuffer_viewport_size(struct GPUFrameBuffer *UNUSED(fb_read), int w, int h);
 
 /* Shaders */
 struct GPUShader *DRW_shader_create(const char *vert, const char *geom, const char *frag, const char *defines);
index 84a8ed5e93117c441dbf9e857f02350d1e819bfb..f648a8dfe50527f97a100674bf1ea6963a859710 100644 (file)
@@ -210,6 +210,7 @@ static void drw_texture_get_format(DRWTextureFormat format, GPUTextureFormat *da
        switch (format) {
                case DRW_TEX_RGBA_8: *data_type = GPU_RGBA8; break;
                case DRW_TEX_RGBA_16: *data_type = GPU_RGBA16F; break;
+               case DRW_TEX_RGB_16: *data_type = GPU_RGB16F; break;
                case DRW_TEX_RG_16: *data_type = GPU_RG16F; break;
                case DRW_TEX_RG_32: *data_type = GPU_RG32F; break;
                case DRW_TEX_R_8: *data_type = GPU_R8; break;
@@ -217,7 +218,6 @@ static void drw_texture_get_format(DRWTextureFormat format, GPUTextureFormat *da
 #if 0
                case DRW_TEX_RGBA_32: *data_type = GPU_RGBA32F; break;
                case DRW_TEX_RGB_8: *data_type = GPU_RGB8; break;
-               case DRW_TEX_RGB_16: *data_type = GPU_RGB16F; break;
                case DRW_TEX_RGB_32: *data_type = GPU_RGB32F; break;
                case DRW_TEX_RG_8: *data_type = GPU_RG8; break;
                case DRW_TEX_R_32: *data_type = GPU_R32F; break;
@@ -257,6 +257,10 @@ static void drw_texture_set_parameters(GPUTexture *tex, DRWTextureFlag flags)
 {
        GPU_texture_bind(tex, 0);
        GPU_texture_filter_mode(tex, flags & DRW_TEX_FILTER);
+       if (flags & DRW_TEX_MIPMAP) {
+               GPU_texture_mipmap_mode(tex, true);
+               DRW_texture_generate_mipmaps(tex);
+       }
        GPU_texture_wrap_mode(tex, flags & DRW_TEX_WRAP);
        GPU_texture_compare_mode(tex, flags & DRW_TEX_COMPARE);
        GPU_texture_unbind(tex);
@@ -314,6 +318,13 @@ GPUTexture *DRW_texture_create_cube(int w, DRWTextureFormat format, DRWTextureFl
        return tex;
 }
 
+void DRW_texture_generate_mipmaps(GPUTexture *tex)
+{
+       GPU_texture_bind(tex, 0);
+       GPU_texture_generate_mipmap(tex);
+       GPU_texture_unbind(tex);
+}
+
 void DRW_texture_free(GPUTexture *tex)
 {
        GPU_texture_free(tex);
@@ -1222,6 +1233,7 @@ static GPUTextureFormat convert_tex_format(int fbo_format, int *channels, bool *
                     (fbo_format == DRW_BUF_DEPTH_24));
 
        switch (fbo_format) {
+               case DRW_BUF_RG_16:    *channels = 2; return GPU_RG16F;
                case DRW_BUF_RGBA_8:   *channels = 4; return GPU_RGBA8;
                case DRW_BUF_RGBA_16:  *channels = 4; return GPU_RGBA16F;
                case DRW_BUF_DEPTH_24: *channels = 1; return GPU_DEPTH_COMPONENT24;
@@ -1241,19 +1253,19 @@ void DRW_framebuffer_init(struct GPUFrameBuffer **fb, int width, int height, DRW
                *fb = GPU_framebuffer_create();
 
                for (int i = 0; i < texnbr; ++i) {
+                       int channels;
+                       bool is_depth;
+
                        DRWFboTexture fbotex = textures[i];
+                       GPUTextureFormat gpu_format = convert_tex_format(fbotex.format, &channels, &is_depth);
 
                        if (!*fbotex.tex) {
-                               int channels;
-                               bool is_depth;
-                               GPUTextureFormat gpu_format = convert_tex_format(fbotex.format, &channels, &is_depth);
-
                                *fbotex.tex = GPU_texture_create_2D_custom(width, height, channels, gpu_format, NULL, NULL);
                                drw_texture_set_parameters(*fbotex.tex, fbotex.flag);
+                       }
 
-                               if (!is_depth) {
-                                       ++color_attachment;
-                               }
+                       if (!is_depth) {
+                               ++color_attachment;
                        }
 
                        GPU_framebuffer_texture_attach(*fb, *fbotex.tex, color_attachment, 0);
@@ -1305,6 +1317,11 @@ void DRW_framebuffer_blit(struct GPUFrameBuffer *fb_read, struct GPUFrameBuffer
        GPU_framebuffer_blit(fb_read, 0, fb_write, 0, depth);
 }
 
+void DRW_framebuffer_viewport_size(struct GPUFrameBuffer *UNUSED(fb_read), int w, int h)
+{
+       glViewport(0, 0, w, h);
+}
+
 /* ****************************************** Viewport ******************************************/
 
 static void *DRW_viewport_engine_data_get(void *engine_type)
index 755ddcc07f578b39e6b024c9b30d8c416503a522..834194c99bc428a86ab8aca769b48eb4f3effaf5 100644 (file)
@@ -105,6 +105,7 @@ typedef enum GPUTextureFormat {
        GPU_DEPTH24_STENCIL8,
 
        /* Texture only format */
+       GPU_RGB16F,
 #if 0
        GPU_RGBA16_SNORM,
        GPU_RGBA8_SNORM,
@@ -112,7 +113,6 @@ typedef enum GPUTextureFormat {
        GPU_RGB32I,
        GPU_RGB32UI,
        GPU_RGB16_SNORM,
-       GPU_RGB16F,
        GPU_RGB16I,
        GPU_RGB16UI,
        GPU_RGB16,
index 055a18ef3433372146b6e1573e4ff5d7a8fa4ed4..ef23713c271e286a828aea096bd0e7f5b9dbed44 100644 (file)
@@ -2263,6 +2263,7 @@ void GPU_state_init(void)
        /* TODO: remove this when we switch to core profile */
        glEnable(GL_POINT_SPRITE);
 
+       glEnable(GL_TEXTURE_CUBE_MAP_SEAMLESS);
 
        glDepthFunc(GL_LEQUAL);
        /* scaling matrices */
index dae3c406259b4cc5fda0df1a10afa27bea39593d..1eab7f37c83519f9f3798ab9f0f1e5fa01a349f5 100644 (file)
@@ -104,6 +104,7 @@ static GLenum gpu_texture_get_format(
                /* Formats texture & renderbuffer */
                case GPU_RGBA16F: return GL_RGBA16F;
                case GPU_RG32F: return GL_RG32F;
+               case GPU_RGB16F: return GL_RGB16F;
                case GPU_RG16F: return GL_RG16F;
                case GPU_RGBA8: return GL_RGBA8;
                case GPU_R16F: return GL_R16F;