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Merge pull request #535 from Subv/gpu_swizzle

GPU: Support changing the texture swizzles for Maxwell textures.
This commit is contained in:
bunnei 2018-06-06 21:39:47 -04:00 committed by GitHub
commit 37f50c8773
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6 changed files with 65 additions and 0 deletions

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@ -681,6 +681,14 @@ u32 RasterizerOpenGL::SetupTextures(Maxwell::ShaderStage stage, GLuint program,
Surface surface = res_cache.GetTextureSurface(texture);
if (surface != nullptr) {
state.texture_units[current_bindpoint].texture_2d = surface->texture.handle;
state.texture_units[current_bindpoint].swizzle.r =
MaxwellToGL::SwizzleSource(texture.tic.x_source);
state.texture_units[current_bindpoint].swizzle.g =
MaxwellToGL::SwizzleSource(texture.tic.y_source);
state.texture_units[current_bindpoint].swizzle.b =
MaxwellToGL::SwizzleSource(texture.tic.z_source);
state.texture_units[current_bindpoint].swizzle.a =
MaxwellToGL::SwizzleSource(texture.tic.w_source);
} else {
// Can occur when texture addr is null or its memory is unmapped/invalid
state.texture_units[current_bindpoint].texture_2d = 0;

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@ -50,6 +50,10 @@ OpenGLState::OpenGLState() {
for (auto& texture_unit : texture_units) {
texture_unit.texture_2d = 0;
texture_unit.sampler = 0;
texture_unit.swizzle.r = GL_RED;
texture_unit.swizzle.g = GL_GREEN;
texture_unit.swizzle.b = GL_BLUE;
texture_unit.swizzle.a = GL_ALPHA;
}
lighting_lut.texture_buffer = 0;
@ -200,6 +204,15 @@ void OpenGLState::Apply() const {
if (texture_units[i].sampler != cur_state.texture_units[i].sampler) {
glBindSampler(i, texture_units[i].sampler);
}
// Update the texture swizzle
if (texture_units[i].swizzle.r != cur_state.texture_units[i].swizzle.r ||
texture_units[i].swizzle.g != cur_state.texture_units[i].swizzle.g ||
texture_units[i].swizzle.b != cur_state.texture_units[i].swizzle.b ||
texture_units[i].swizzle.a != cur_state.texture_units[i].swizzle.a) {
std::array<GLint, 4> mask = {texture_units[i].swizzle.r, texture_units[i].swizzle.g,
texture_units[i].swizzle.b, texture_units[i].swizzle.a};
glTexParameteriv(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_RGBA, mask.data());
}
}
// Constbuffers

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@ -85,6 +85,12 @@ public:
struct {
GLuint texture_2d; // GL_TEXTURE_BINDING_2D
GLuint sampler; // GL_SAMPLER_BINDING
struct {
GLint r; // GL_TEXTURE_SWIZZLE_R
GLint g; // GL_TEXTURE_SWIZZLE_G
GLint b; // GL_TEXTURE_SWIZZLE_B
GLint a; // GL_TEXTURE_SWIZZLE_A
} swizzle;
} texture_units[32];
struct {

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@ -180,4 +180,25 @@ inline GLenum BlendFunc(Maxwell::Blend::Factor factor) {
return {};
}
inline GLenum SwizzleSource(Tegra::Texture::SwizzleSource source) {
switch (source) {
case Tegra::Texture::SwizzleSource::Zero:
return GL_ZERO;
case Tegra::Texture::SwizzleSource::R:
return GL_RED;
case Tegra::Texture::SwizzleSource::G:
return GL_GREEN;
case Tegra::Texture::SwizzleSource::B:
return GL_BLUE;
case Tegra::Texture::SwizzleSource::A:
return GL_ALPHA;
case Tegra::Texture::SwizzleSource::OneInt:
case Tegra::Texture::SwizzleSource::OneFloat:
return GL_ONE;
}
NGLOG_CRITICAL(Render_OpenGL, "Unimplemented swizzle source={}", static_cast<u32>(source));
UNREACHABLE();
return {};
}
} // namespace MaxwellToGL

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@ -316,6 +316,7 @@ void RendererOpenGL::DrawScreenTriangles(const ScreenInfo& screen_info, float x,
}};
state.texture_units[0].texture_2d = screen_info.display_texture;
state.texture_units[0].swizzle = {GL_RED, GL_GREEN, GL_BLUE, GL_ALPHA};
state.Apply();
glBufferSubData(GL_ARRAY_BUFFER, 0, sizeof(vertices), vertices.data());

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@ -122,6 +122,17 @@ enum class ComponentType : u32 {
FLOAT = 7
};
enum class SwizzleSource : u32 {
Zero = 0,
R = 2,
G = 3,
B = 4,
A = 5,
OneInt = 6,
OneFloat = 7,
};
union TextureHandle {
u32 raw;
BitField<0, 20, u32> tic_id;
@ -139,6 +150,11 @@ struct TICEntry {
BitField<10, 3, ComponentType> g_type;
BitField<13, 3, ComponentType> b_type;
BitField<16, 3, ComponentType> a_type;
BitField<19, 3, SwizzleSource> x_source;
BitField<22, 3, SwizzleSource> y_source;
BitField<25, 3, SwizzleSource> z_source;
BitField<28, 3, SwizzleSource> w_source;
};
u32 address_low;
union {