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PICA: Scissor fixes and cleanups

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This commit is contained in:
Yuri Kunde Schlesner 2016-01-24 22:59:16 -08:00
parent f9be06b15f
commit f0b9bc14b6
5 changed files with 39 additions and 45 deletions
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16
src/video_core/pica.h
View file

@ -128,22 +128,14 @@ struct Regs {
BitField<0, 2, ScissorMode> mode;
union {
BitField< 0, 16, u32> right;
BitField<16, 16, u32> bottom;
BitField< 0, 16, u32> x1;
BitField<16, 16, u32> y1;
};
union {
BitField< 0, 16, u32> left_minus_1;
BitField<16, 16, u32> top_minus_1;
BitField< 0, 16, u32> x2;
BitField<16, 16, u32> y2;
};
u32 GetTop() const {
return top_minus_1 + 1;
}
u32 GetLeft() const {
return left_minus_1 + 1;
}
} scissor_test;
union {

25
src/video_core/rasterizer.cpp
View file

@ -344,17 +344,18 @@ static void ProcessTriangleInternal(const Shader::OutputVertex& v0,
u16 max_y = std::max({vtxpos[0].y, vtxpos[1].y, vtxpos[2].y});
// Convert the scissor box coordinates to 12.4 fixed point
u16 scissor_left = (u16)(regs.scissor_test.GetLeft() << 4);
u16 scissor_top = (u16)(regs.scissor_test.GetTop() << 4);
u16 scissor_right = (u16)(regs.scissor_test.right << 4);
u16 scissor_bottom = (u16)(regs.scissor_test.bottom << 4);
u16 scissor_x1 = (u16)( regs.scissor_test.x1 << 4);
u16 scissor_y1 = (u16)( regs.scissor_test.y1 << 4);
// x2,y2 have +1 added to cover the entire sub-pixel area
u16 scissor_x2 = (u16)((regs.scissor_test.x2 + 1) << 4);
u16 scissor_y2 = (u16)((regs.scissor_test.y2 + 1) << 4);
if (regs.scissor_test.mode == Regs::ScissorMode::Include) {
// Calculate the new bounds
min_x = std::max(min_x, scissor_right);
min_y = std::max(min_y, scissor_bottom);
max_x = std::min(max_x, scissor_left);
max_y = std::min(max_y, scissor_top);
min_x = std::max(min_x, scissor_x1);
min_y = std::max(min_y, scissor_y1);
max_x = std::min(max_x, scissor_x2);
max_y = std::min(max_y, scissor_y2);
}
min_x &= Fix12P4::IntMask();
@ -397,10 +398,10 @@ static void ProcessTriangleInternal(const Shader::OutputVertex& v0,
for (u16 x = min_x + 8; x < max_x; x += 0x10) {
// Do not process the pixel if it's inside the scissor box and the scissor mode is set to Exclude
if (regs.scissor_test.mode == Regs::ScissorMode::Exclude &&
x >= scissor_right && x <= scissor_left &&
y >= scissor_bottom && y <= scissor_top) {
continue;
if (regs.scissor_test.mode == Regs::ScissorMode::Exclude) {
if (x >= scissor_x1 && x < scissor_x2 &&
y >= scissor_y1 && y < scissor_y2)
continue;
}
// Calculate the barycentric coordinates w0, w1 and w2

20
src/video_core/renderer_opengl/gl_rasterizer.cpp
View file

@ -357,8 +357,8 @@ void RasterizerOpenGL::NotifyPicaRegisterChanged(u32 id) {
case PICA_REG_INDEX(scissor_test.mode):
shader_dirty = true;
break;
case PICA_REG_INDEX(scissor_test.right):
case PICA_REG_INDEX(scissor_test.left_minus_1):
case PICA_REG_INDEX(scissor_test.x1): // and y1
case PICA_REG_INDEX(scissor_test.x2): // and y2
SyncScissorTest();
break;
@ -1179,15 +1179,15 @@ void RasterizerOpenGL::SyncDepthTest() {
void RasterizerOpenGL::SyncScissorTest() {
const auto& regs = Pica::g_state.regs;
if (uniform_block_data.data.scissor_right != regs.scissor_test.right ||
uniform_block_data.data.scissor_bottom != regs.scissor_test.bottom ||
uniform_block_data.data.scissor_left != regs.scissor_test.GetLeft() ||
uniform_block_data.data.scissor_top != regs.scissor_test.GetTop()) {
if (uniform_block_data.data.scissor_x1 != regs.scissor_test.x1 ||
uniform_block_data.data.scissor_y1 != regs.scissor_test.y1 ||
uniform_block_data.data.scissor_x2 != regs.scissor_test.x2 ||
uniform_block_data.data.scissor_y2 != regs.scissor_test.y2) {
uniform_block_data.data.scissor_right = regs.scissor_test.right;
uniform_block_data.data.scissor_bottom = regs.scissor_test.bottom;
uniform_block_data.data.scissor_left = regs.scissor_test.GetLeft();
uniform_block_data.data.scissor_top = regs.scissor_test.GetTop();
uniform_block_data.data.scissor_x1 = regs.scissor_test.x1;
uniform_block_data.data.scissor_y1 = regs.scissor_test.y1;
uniform_block_data.data.scissor_x2 = regs.scissor_test.x2;
uniform_block_data.data.scissor_y2 = regs.scissor_test.y2;
uniform_block_data.dirty = true;
}
}

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

@ -331,10 +331,10 @@ private:
GLint alphatest_ref;
GLfloat depth_scale;
GLfloat depth_offset;
GLint scissor_right;
GLint scissor_bottom;
GLint scissor_left;
GLint scissor_top;
GLint scissor_x1;
GLint scissor_y1;
GLint scissor_x2;
GLint scissor_y2;
alignas(16) GLvec3 fog_color;
alignas(16) GLvec3 lighting_global_ambient;
LightSrc light_src[8];

15
src/video_core/renderer_opengl/gl_shader_gen.cpp
View file

@ -557,10 +557,10 @@ layout (std140) uniform shader_data {
int alphatest_ref;
float depth_scale;
float depth_offset;
int scissor_right;
int scissor_bottom;
int scissor_left;
int scissor_top;
int scissor_x1;
int scissor_y1;
int scissor_x2;
int scissor_y2;
vec3 fog_color;
vec3 lighting_global_ambient;
LightSrc light_src[NUM_LIGHTS];
@ -589,13 +589,14 @@ vec4 secondary_fragment_color = vec4(0.0);
}
// Append the scissor test
if (state.scissor_test_mode == Regs::ScissorMode::Include || state.scissor_test_mode == Regs::ScissorMode::Exclude) {
out += "if (scissor_left <= scissor_right || scissor_top <= scissor_bottom) discard;\n";
if (state.scissor_test_mode != Regs::ScissorMode::Disabled) {
out += "if (";
// Negate the condition if we have to keep only the pixels outside the scissor box
if (state.scissor_test_mode == Regs::ScissorMode::Include)
out += "!";
out += "(gl_FragCoord.x >= scissor_right && gl_FragCoord.x <= scissor_left && gl_FragCoord.y >= scissor_bottom && gl_FragCoord.y <= scissor_top)) discard;\n";
// x2,y2 have +1 added to cover the entire pixel area
out += "(gl_FragCoord.x >= scissor_x1 && gl_FragCoord.x < scissor_x2 + 1 && "
"gl_FragCoord.y >= scissor_y1 && gl_FragCoord.y < scissor_y2 + 1)) discard;\n";
}
out += "float z_over_w = 1.0 - gl_FragCoord.z * 2.0;\n";