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Merge pull request #535 from Subv/gpu_swizzle
GPU: Support changing the texture swizzles for Maxwell textures.
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commit
37f50c8773
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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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@ -50,6 +50,10 @@ OpenGLState::OpenGLState() {
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for (auto& texture_unit : texture_units) {
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texture_unit.texture_2d = 0;
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texture_unit.sampler = 0;
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texture_unit.swizzle.r = GL_RED;
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texture_unit.swizzle.g = GL_GREEN;
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texture_unit.swizzle.b = GL_BLUE;
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texture_unit.swizzle.a = GL_ALPHA;
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}
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lighting_lut.texture_buffer = 0;
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@ -200,6 +204,15 @@ void OpenGLState::Apply() const {
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if (texture_units[i].sampler != cur_state.texture_units[i].sampler) {
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glBindSampler(i, texture_units[i].sampler);
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}
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// Update the texture swizzle
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if (texture_units[i].swizzle.r != cur_state.texture_units[i].swizzle.r ||
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texture_units[i].swizzle.g != cur_state.texture_units[i].swizzle.g ||
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texture_units[i].swizzle.b != cur_state.texture_units[i].swizzle.b ||
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texture_units[i].swizzle.a != cur_state.texture_units[i].swizzle.a) {
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std::array<GLint, 4> mask = {texture_units[i].swizzle.r, texture_units[i].swizzle.g,
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texture_units[i].swizzle.b, texture_units[i].swizzle.a};
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glTexParameteriv(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_RGBA, mask.data());
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}
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}
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// Constbuffers
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@ -85,6 +85,12 @@ public:
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struct {
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GLuint texture_2d; // GL_TEXTURE_BINDING_2D
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GLuint sampler; // GL_SAMPLER_BINDING
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struct {
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GLint r; // GL_TEXTURE_SWIZZLE_R
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GLint g; // GL_TEXTURE_SWIZZLE_G
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GLint b; // GL_TEXTURE_SWIZZLE_B
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GLint a; // GL_TEXTURE_SWIZZLE_A
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} swizzle;
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} texture_units[32];
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struct {
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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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@ -316,6 +316,7 @@ void RendererOpenGL::DrawScreenTriangles(const ScreenInfo& screen_info, float x,
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}};
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state.texture_units[0].texture_2d = screen_info.display_texture;
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state.texture_units[0].swizzle = {GL_RED, GL_GREEN, GL_BLUE, GL_ALPHA};
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state.Apply();
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glBufferSubData(GL_ARRAY_BUFFER, 0, sizeof(vertices), vertices.data());
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@ -122,6 +122,17 @@ enum class ComponentType : u32 {
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FLOAT = 7
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};
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enum class SwizzleSource : u32 {
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Zero = 0,
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R = 2,
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G = 3,
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B = 4,
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A = 5,
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OneInt = 6,
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OneFloat = 7,
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};
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union TextureHandle {
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u32 raw;
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BitField<0, 20, u32> tic_id;
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@ -139,6 +150,11 @@ struct TICEntry {
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BitField<10, 3, ComponentType> g_type;
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BitField<13, 3, ComponentType> b_type;
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BitField<16, 3, ComponentType> a_type;
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BitField<19, 3, SwizzleSource> x_source;
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BitField<22, 3, SwizzleSource> y_source;
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BitField<25, 3, SwizzleSource> z_source;
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BitField<28, 3, SwizzleSource> w_source;
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};
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u32 address_low;
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union {
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