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Add support to color mask to avoid issues in blending caused by wrong values in the alpha channel in some render targets.

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This commit is contained in:
Rodolfo Bogado 2018-11-04 23:46:06 -03:00
parent 145ae36963
commit 19038db489
5 changed files with 79 additions and 25 deletions
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23
src/video_core/renderer_opengl/gl_rasterizer.cpp
View file

@ -511,10 +511,10 @@ void RasterizerOpenGL::Clear() {
OpenGLState clear_state;
clear_state.draw.draw_framebuffer = framebuffer.handle;
clear_state.color_mask.red_enabled = regs.clear_buffers.R ? GL_TRUE : GL_FALSE;
clear_state.color_mask.green_enabled = regs.clear_buffers.G ? GL_TRUE : GL_FALSE;
clear_state.color_mask.blue_enabled = regs.clear_buffers.B ? GL_TRUE : GL_FALSE;
clear_state.color_mask.alpha_enabled = regs.clear_buffers.A ? GL_TRUE : GL_FALSE;
clear_state.color_mask[0].red_enabled = regs.clear_buffers.R ? GL_TRUE : GL_FALSE;
clear_state.color_mask[0].green_enabled = regs.clear_buffers.G ? GL_TRUE : GL_FALSE;
clear_state.color_mask[0].blue_enabled = regs.clear_buffers.B ? GL_TRUE : GL_FALSE;
clear_state.color_mask[0].alpha_enabled = regs.clear_buffers.A ? GL_TRUE : GL_FALSE;
if (regs.clear_buffers.R || regs.clear_buffers.G || regs.clear_buffers.B ||
regs.clear_buffers.A) {
@ -573,7 +573,7 @@ void RasterizerOpenGL::DrawArrays() {
ScopeAcquireGLContext acquire_context{emu_window};
ConfigureFramebuffers();
SyncColorMask();
SyncDepthTestState();
SyncStencilTestState();
SyncBlendState();
@ -989,6 +989,18 @@ void RasterizerOpenGL::SyncStencilTestState() {
state.stencil.back.write_mask = regs.stencil_back_mask;
}
void RasterizerOpenGL::SyncColorMask() {
const auto& regs = Core::System::GetInstance().GPU().Maxwell3D().regs;
for (size_t i = 0; i < Tegra::Engines::Maxwell3D::Regs::NumRenderTargets; i++) {
const auto& source = regs.color_mask[regs.color_mask_common ? 0 : i];
auto& dest = state.color_mask[i];
dest.red_enabled = (source.R == 0) ? GL_FALSE : GL_TRUE;
dest.green_enabled = (source.G == 0) ? GL_FALSE : GL_TRUE;
dest.blue_enabled = (source.B == 0) ? GL_FALSE : GL_TRUE;
dest.alpha_enabled = (source.A == 0) ? GL_FALSE : GL_TRUE;
}
}
void RasterizerOpenGL::SyncBlendState() {
const auto& regs = Core::System::GetInstance().GPU().Maxwell3D().regs;
@ -1000,6 +1012,7 @@ void RasterizerOpenGL::SyncBlendState() {
state.independant_blend.enabled = regs.independent_blend_enable;
if (!state.independant_blend.enabled) {
auto& blend = state.blend[0];
blend.enabled = regs.blend.enable[0] != 0;
blend.separate_alpha = regs.blend.separate_alpha;
blend.rgb_equation = MaxwellToGL::BlendEquation(regs.blend.equation_rgb);
blend.src_rgb_func = MaxwellToGL::BlendFunc(regs.blend.factor_source_rgb);

3
src/video_core/renderer_opengl/gl_rasterizer.h
View file

@ -169,6 +169,9 @@ private:
/// Syncs the point state to match the guest state
void SyncPointState();
/// Syncs Color Mask
void SyncColorMask();
/// Check asserts for alpha testing.
void CheckAlphaTests();

47
src/video_core/renderer_opengl/gl_state.cpp
View file

@ -25,12 +25,12 @@ OpenGLState::OpenGLState() {
primitive_restart.enabled = false;
primitive_restart.index = 0;
color_mask.red_enabled = GL_TRUE;
color_mask.green_enabled = GL_TRUE;
color_mask.blue_enabled = GL_TRUE;
color_mask.alpha_enabled = GL_TRUE;
for (auto& item : color_mask) {
item.red_enabled = GL_TRUE;
item.green_enabled = GL_TRUE;
item.blue_enabled = GL_TRUE;
item.alpha_enabled = GL_TRUE;
}
stencil.test_enabled = false;
auto reset_stencil = [](auto& config) {
config.test_func = GL_ALWAYS;
@ -135,6 +135,32 @@ void OpenGLState::ApplyCulling() const {
}
}
void OpenGLState::ApplyColorMask() const {
if (GLAD_GL_ARB_viewport_array) {
for (size_t i = 0; i < Tegra::Engines::Maxwell3D::Regs::NumRenderTargets; i++) {
const auto& updated = color_mask[i];
const auto& current = cur_state.color_mask[i];
if (updated.red_enabled != current.red_enabled ||
updated.green_enabled != current.green_enabled ||
updated.blue_enabled != current.blue_enabled ||
updated.alpha_enabled != current.alpha_enabled) {
glColorMaski(static_cast<GLuint>(i), updated.red_enabled, updated.green_enabled,
updated.blue_enabled, updated.alpha_enabled);
}
}
} else {
const auto& updated = color_mask[0];
const auto& current = cur_state.color_mask[0];
if (updated.red_enabled != current.red_enabled ||
updated.green_enabled != current.green_enabled ||
updated.blue_enabled != current.blue_enabled ||
updated.alpha_enabled != current.alpha_enabled) {
glColorMask(updated.red_enabled, updated.green_enabled, updated.blue_enabled,
updated.alpha_enabled);
}
}
}
void OpenGLState::ApplyDepth() const {
// Depth test
const bool depth_test_changed = depth.test_enabled != cur_state.depth.test_enabled;
@ -444,18 +470,11 @@ void OpenGLState::Apply() const {
}
}
}
// Color mask
if (color_mask.red_enabled != cur_state.color_mask.red_enabled ||
color_mask.green_enabled != cur_state.color_mask.green_enabled ||
color_mask.blue_enabled != cur_state.color_mask.blue_enabled ||
color_mask.alpha_enabled != cur_state.color_mask.alpha_enabled) {
glColorMask(color_mask.red_enabled, color_mask.green_enabled, color_mask.blue_enabled,
color_mask.alpha_enabled);
}
// Point
if (point.size != cur_state.point.size) {
glPointSize(point.size);
}
ApplyColorMask();
ApplyViewport();
ApplyScissor();
ApplyStencilTest();

8
src/video_core/renderer_opengl/gl_state.h
View file

@ -56,13 +56,14 @@ public:
GLuint index;
} primitive_restart; // GL_PRIMITIVE_RESTART
struct {
struct ColorMask {
GLboolean red_enabled;
GLboolean green_enabled;
GLboolean blue_enabled;
GLboolean alpha_enabled;
} color_mask; // GL_COLOR_WRITEMASK
};
std::array<ColorMask, Tegra::Engines::Maxwell3D::Regs::NumRenderTargets>
color_mask; // GL_COLOR_WRITEMASK
struct {
bool test_enabled; // GL_STENCIL_TEST
struct {
@ -198,6 +199,7 @@ private:
static bool s_rgb_used;
void ApplySRgb() const;
void ApplyCulling() const;
void ApplyColorMask() const;
void ApplyDepth() const;
void ApplyPrimitiveRestart() const;
void ApplyStencilTest() const;