GPU: Support changing the texture swizzles for Maxwell textures.
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3 changed files with 45 additions and 0 deletions
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@ -681,6 +681,14 @@ u32 RasterizerOpenGL::SetupTextures(Maxwell::ShaderStage stage, GLuint program,
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Surface surface = res_cache.GetTextureSurface(texture);
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if (surface != nullptr) {
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state.texture_units[current_bindpoint].texture_2d = surface->texture.handle;
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state.texture_units[current_bindpoint].swizzle.r =
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MaxwellToGL::SwizzleSource(texture.tic.x_source);
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state.texture_units[current_bindpoint].swizzle.g =
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MaxwellToGL::SwizzleSource(texture.tic.y_source);
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state.texture_units[current_bindpoint].swizzle.b =
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MaxwellToGL::SwizzleSource(texture.tic.z_source);
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state.texture_units[current_bindpoint].swizzle.a =
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MaxwellToGL::SwizzleSource(texture.tic.w_source);
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} else {
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// Can occur when texture addr is null or its memory is unmapped/invalid
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state.texture_units[current_bindpoint].texture_2d = 0;
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@ -180,4 +180,25 @@ inline GLenum BlendFunc(Maxwell::Blend::Factor factor) {
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return {};
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}
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inline GLenum SwizzleSource(Tegra::Texture::SwizzleSource source) {
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switch (source) {
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case Tegra::Texture::SwizzleSource::Zero:
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return GL_ZERO;
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case Tegra::Texture::SwizzleSource::R:
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return GL_RED;
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case Tegra::Texture::SwizzleSource::G:
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return GL_GREEN;
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case Tegra::Texture::SwizzleSource::B:
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return GL_BLUE;
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case Tegra::Texture::SwizzleSource::A:
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return GL_ALPHA;
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case Tegra::Texture::SwizzleSource::OneInt:
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case Tegra::Texture::SwizzleSource::OneFloat:
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return GL_ONE;
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}
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NGLOG_CRITICAL(Render_OpenGL, "Unimplemented swizzle source={}", static_cast<u32>(source));
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UNREACHABLE();
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return {};
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}
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} // namespace MaxwellToGL
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