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GPU States: Implement Polygon Offset. This is used in SMO all the time. (#1784)

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* GPU States: Implement Polygon Offset. This is used in SMO all the time.

* Clang Format fixes.

* Initialize polygon_offset in the constructor.
This commit is contained in:
Marcos 2018-11-26 20:31:44 -03:00 • committed by bunnei
parent 7684f4d0cf
commit cb8d51e37e
5 changed files with 107 additions and 5 deletions
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12
src/video_core/renderer_opengl/gl_rasterizer.cpp
View file

@ -620,7 +620,7 @@ void RasterizerOpenGL::DrawArrays() {
SyncTransformFeedback();
SyncPointState();
CheckAlphaTests();
SyncPolygonOffset();
// TODO(bunnei): Sync framebuffer_scale uniform here
// TODO(bunnei): Sync scissorbox uniform(s) here
@ -1179,6 +1179,16 @@ void RasterizerOpenGL::SyncPointState() {
state.point.size = regs.point_size;
}
void RasterizerOpenGL::SyncPolygonOffset() {
const auto& regs = Core::System::GetInstance().GPU().Maxwell3D().regs;
state.polygon_offset.fill_enable = regs.polygon_offset_fill_enable != 0;
state.polygon_offset.line_enable = regs.polygon_offset_line_enable != 0;
state.polygon_offset.point_enable = regs.polygon_offset_point_enable != 0;
state.polygon_offset.units = regs.polygon_offset_units;
state.polygon_offset.factor = regs.polygon_offset_factor;
state.polygon_offset.clamp = regs.polygon_offset_clamp;
}
void RasterizerOpenGL::CheckAlphaTests() {
const auto& regs = Core::System::GetInstance().GPU().Maxwell3D().regs;

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

@ -183,6 +183,9 @@ private:
/// Syncs Color Mask
void SyncColorMask();
/// Syncs the polygon offsets
void SyncPolygonOffset();
/// Check asserts for alpha testing.
void CheckAlphaTests();

57
src/video_core/renderer_opengl/gl_state.cpp
View file

@ -92,6 +92,13 @@ OpenGLState::OpenGLState() {
point.size = 1;
fragment_color_clamp.enabled = false;
polygon_offset.fill_enable = false;
polygon_offset.line_enable = false;
polygon_offset.point_enable = false;
polygon_offset.factor = 0.0f;
polygon_offset.units = 0.0f;
polygon_offset.clamp = 0.0f;
}
void OpenGLState::ApplyDefaultState() {
@ -406,6 +413,55 @@ void OpenGLState::ApplyLogicOp() const {
}
}
void OpenGLState::ApplyPolygonOffset() const {
const bool fill_enable_changed =
polygon_offset.fill_enable != cur_state.polygon_offset.fill_enable;
const bool line_enable_changed =
polygon_offset.line_enable != cur_state.polygon_offset.line_enable;
const bool point_enable_changed =
polygon_offset.point_enable != cur_state.polygon_offset.point_enable;
const bool factor_changed = polygon_offset.factor != cur_state.polygon_offset.factor;
const bool units_changed = polygon_offset.units != cur_state.polygon_offset.units;
const bool clamp_changed = polygon_offset.clamp != cur_state.polygon_offset.clamp;
if (fill_enable_changed) {
if (polygon_offset.fill_enable) {
glEnable(GL_POLYGON_OFFSET_FILL);
} else {
glDisable(GL_POLYGON_OFFSET_FILL);
}
}
if (line_enable_changed) {
if (polygon_offset.line_enable) {
glEnable(GL_POLYGON_OFFSET_LINE);
} else {
glDisable(GL_POLYGON_OFFSET_LINE);
}
}
if (point_enable_changed) {
if (polygon_offset.point_enable) {
glEnable(GL_POLYGON_OFFSET_POINT);
} else {
glDisable(GL_POLYGON_OFFSET_POINT);
}
}
if ((polygon_offset.fill_enable || polygon_offset.line_enable || polygon_offset.point_enable) &&
(factor_changed || units_changed || clamp_changed)) {
if (GLAD_GL_EXT_polygon_offset_clamp && polygon_offset.clamp != 0) {
glPolygonOffsetClamp(polygon_offset.factor, polygon_offset.units, polygon_offset.clamp);
} else {
glPolygonOffset(polygon_offset.factor, polygon_offset.units);
UNIMPLEMENTED_IF_MSG(polygon_offset.clamp != 0,
"Unimplemented Depth polygon offset clamp.");
}
}
}
void OpenGLState::ApplyTextures() const {
for (std::size_t i = 0; i < std::size(texture_units); ++i) {
const auto& texture_unit = texture_units[i];
@ -532,6 +588,7 @@ void OpenGLState::Apply() const {
ApplyLogicOp();
ApplyTextures();
ApplySamplers();
ApplyPolygonOffset();
cur_state = *this;
}

10
src/video_core/renderer_opengl/gl_state.h
View file

@ -176,6 +176,15 @@ public:
float size; // GL_POINT_SIZE
} point;
struct {
bool point_enable;
bool line_enable;
bool fill_enable;
GLfloat units;
GLfloat factor;
GLfloat clamp;
} polygon_offset;
std::array<bool, 2> clip_distance; // GL_CLIP_DISTANCE
OpenGLState();
@ -226,6 +235,7 @@ private:
void ApplyLogicOp() const;
void ApplyTextures() const;
void ApplySamplers() const;
void ApplyPolygonOffset() const;
};
} // namespace OpenGL