| /* |
| * Copyright 2022 Rive |
| */ |
| |
| #ifdef @FRAGMENT |
| |
| // Path draws include draw_path_common.glsl, which declares the textures & |
| // samplers, so we only need to declare these for image meshes. |
| #ifdef @DRAW_IMAGE_MESH |
| FRAG_TEXTURE_BLOCK_BEGIN |
| TEXTURE_RGBA8(PER_DRAW_BINDINGS_SET, IMAGE_TEXTURE_IDX, @imageTexture); |
| #ifdef @ENABLE_ADVANCED_BLEND |
| DST_COLOR_TEXTURE(@dstColorTexture); |
| #endif |
| FRAG_TEXTURE_BLOCK_END |
| |
| DYNAMIC_SAMPLER_BLOCK_BEGIN |
| SAMPLER_DYNAMIC(PER_DRAW_BINDINGS_SET, IMAGE_SAMPLER_IDX, imageSampler) |
| DYNAMIC_SAMPLER_BLOCK_END |
| #endif // @DRAW_IMAGE_MESH |
| |
| FRAG_DATA_MAIN(half4, @drawFragmentMain) |
| { |
| #ifdef @DRAW_IMAGE_MESH |
| VARYING_UNPACK(v_texCoord, float2); |
| #else |
| VARYING_UNPACK(v_paint, float4); |
| #ifdef @ATLAS_BLIT |
| VARYING_UNPACK(v_atlasCoord, float2); |
| #endif // @ATLAS_BLIT |
| #ifdef @ENABLE_ADVANCED_BLEND |
| VARYING_UNPACK(v_blendMode, half); |
| #endif |
| #endif // !@DRAW_IMAGE_MESH |
| |
| #ifdef @DRAW_IMAGE_MESH |
| half4 color = TEXTURE_SAMPLE_DYNAMIC_LODBIAS(@imageTexture, |
| imageSampler, |
| v_texCoord, |
| uniforms.mipMapLODBias) * |
| imageDrawUniforms.opacity; |
| #else |
| half coverage = |
| #ifdef @ATLAS_BLIT |
| filter_feather_atlas( |
| v_atlasCoord, |
| uniforms.atlasTextureInverseSize TEXTURE_CONTEXT_FORWARD); |
| #else |
| 1.; |
| #endif |
| half4 color = find_paint_color(v_paint, coverage FRAGMENT_CONTEXT_UNPACK); |
| #endif |
| |
| #ifdef @ENABLE_ADVANCED_BLEND |
| if (@ENABLE_ADVANCED_BLEND) |
| { |
| #ifndef @FIXED_FUNCTION_COLOR_OUTPUT |
| // Do the color portion of the blend mode in the shader. |
| #ifdef @DRAW_IMAGE_MESH |
| color.rgb = unmultiply_rgb(color); |
| ushort blendMode = cast_uint_to_ushort(imageDrawUniforms.blendMode); |
| #else |
| // NOTE: for non-image-meshes, "color" is already unmultiplied because |
| // GENERATE_PREMULTIPLIED_PAINT_COLORS is false when using advanced |
| // blend. |
| ushort blendMode = cast_half_to_ushort(v_blendMode); |
| #endif |
| half4 dstColorPremul = DST_COLOR_FETCH(@dstColorTexture); |
| color.rgb = advanced_color_blend(color.rgb, dstColorPremul, blendMode); |
| #endif // @FIXED_FUNCTION_COLOR_OUTPUT |
| |
| // Src-over blending is enabled, so just premultiply and let the HW |
| // finish the the the alpha portion of the blend mode. |
| color.rgb *= color.a; |
| } |
| #endif // @ENABLE_ADVANCED_BLEND |
| |
| // Certain platforms give us less control of the format of what we are |
| // rendering too. Specifically, we are auto converted from linear -> sRGB on |
| // render target writes in unreal. In those cases we made need to end up in |
| // linear color space |
| #ifdef @NEEDS_GAMMA_CORRECTION |
| if (@NEEDS_GAMMA_CORRECTION) |
| { |
| color = gamma_to_linear(color); |
| } |
| #endif |
| |
| EMIT_FRAG_DATA(color); |
| } |
| |
| #endif // FRAGMENT |
