diff options
Diffstat (limited to 'source/blender/draw/engines/eevee/eevee_materials.c')
| -rw-r--r-- | source/blender/draw/engines/eevee/eevee_materials.c | 93 |
1 files changed, 56 insertions, 37 deletions
diff --git a/source/blender/draw/engines/eevee/eevee_materials.c b/source/blender/draw/engines/eevee/eevee_materials.c index ef330c424ab..a26c2a4478f 100644 --- a/source/blender/draw/engines/eevee/eevee_materials.c +++ b/source/blender/draw/engines/eevee/eevee_materials.c @@ -411,6 +411,61 @@ static void create_default_shader(int options) MEM_freeN(frag_str); } +void EEVEE_update_util_texture(float offset) +{ + if (e_data.util_tex != NULL) { + DRW_TEXTURE_FREE_SAFE(e_data.util_tex); + } + + /* TODO: split this into 2 functions : one for init, + * and the other one that updates the noise with the offset. */ + const int layers = 3 + 16; + float (*texels)[4] = MEM_mallocN(sizeof(float[4]) * 64 * 64 * layers, "utils texels"); + float (*texels_layer)[4] = texels; + + /* Copy ltc_mat_ggx into 1st layer */ + memcpy(texels_layer, ltc_mat_ggx, sizeof(float[4]) * 64 * 64); + texels_layer += 64 * 64; + + /* Copy bsdf_split_sum_ggx into 2nd layer red and green channels. + Copy ltc_mag_ggx into 2nd layer blue channel. */ + for (int i = 0; i < 64 * 64; i++) { + texels_layer[i][0] = bsdf_split_sum_ggx[i*2 + 0]; + texels_layer[i][1] = bsdf_split_sum_ggx[i*2 + 1]; + texels_layer[i][2] = ltc_mag_ggx[i]; + } + texels_layer += 64 * 64; + + /* Copy blue noise in 3rd layer */ + for (int i = 0; i < 64 * 64; i++) { + float noise; + noise = blue_noise[i][0] + offset; + noise = noise - floorf(noise); /* fract */ + texels_layer[i][0] = noise; + + noise = blue_noise[i][1] + offset; + noise = noise - floorf(noise); /* fract */ + texels_layer[i][1] = noise * 0.5 + 0.5; + texels_layer[i][2] = cosf(noise * 2.0 * M_PI); + texels_layer[i][3] = sinf(noise * 2.0 * M_PI); + } + texels_layer += 64 * 64; + + /* Copy Refraction GGX LUT in layer 4 - 20 */ + for (int j = 0; j < 16; ++j) { + for (int i = 0; i < 64 * 64; i++) { + texels_layer[i][0] = btdf_split_sum_ggx[j*2][i]; + texels_layer[i][1] = btdf_split_sum_ggx[j*2][i]; + texels_layer[i][2] = btdf_split_sum_ggx[j*2][i]; + texels_layer[i][3] = btdf_split_sum_ggx[j*2][i]; + } + texels_layer += 64 * 64; + } + + e_data.util_tex = DRW_texture_create_2D_array(64, 64, layers, DRW_TEX_RGBA_16, DRW_TEX_FILTER | DRW_TEX_WRAP, (float *)texels); + MEM_freeN(texels); +} + void EEVEE_materials_init(EEVEE_StorageList *stl) { if (!e_data.frag_shader_lib) { @@ -466,43 +521,7 @@ void EEVEE_materials_init(EEVEE_StorageList *stl) MEM_freeN(frag_str); - /* Textures */ - const int layers = 3 + 16; - float (*texels)[4] = MEM_mallocN(sizeof(float[4]) * 64 * 64 * layers, "utils texels"); - float (*texels_layer)[4] = texels; - - /* Copy ltc_mat_ggx into 1st layer */ - memcpy(texels_layer, ltc_mat_ggx, sizeof(float[4]) * 64 * 64); - texels_layer += 64 * 64; - - /* Copy bsdf_split_sum_ggx into 2nd layer red and green channels. - Copy ltc_mag_ggx into 2nd layer blue channel. */ - for (int i = 0; i < 64 * 64; i++) { - texels_layer[i][0] = bsdf_split_sum_ggx[i*2 + 0]; - texels_layer[i][1] = bsdf_split_sum_ggx[i*2 + 1]; - texels_layer[i][2] = ltc_mag_ggx[i]; - } - texels_layer += 64 * 64; - - for (int i = 0; i < 64 * 64; i++) { - texels_layer[i][0] = blue_noise[i][0]; - texels_layer[i][1] = blue_noise[i][1] * 0.5 + 0.5; - texels_layer[i][2] = cosf(blue_noise[i][1] * 2.0 * M_PI); - texels_layer[i][3] = sinf(blue_noise[i][1] * 2.0 * M_PI); - } - - for (int j = 0; j < 16; ++j) { - texels_layer += 64 * 64; - for (int i = 0; i < 64 * 64; i++) { - texels_layer[i][0] = btdf_split_sum_ggx[j*2][i]; - texels_layer[i][1] = btdf_split_sum_ggx[j*2][i]; - texels_layer[i][2] = btdf_split_sum_ggx[j*2][i]; - texels_layer[i][3] = btdf_split_sum_ggx[j*2][i]; - } - } - - e_data.util_tex = DRW_texture_create_2D_array(64, 64, layers, DRW_TEX_RGBA_16, DRW_TEX_FILTER | DRW_TEX_WRAP, (float *)texels); - MEM_freeN(texels); + EEVEE_update_util_texture(0.0f); } { |