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Shadergen: Add clipping

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wheremyfoodat 2024-07-16 02:20:37 +03:00
parent c02b382262
commit 441aa2346c
3 changed files with 32 additions and 10 deletions
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1
include/PICA/pica_frag_uniforms.hpp
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@ -16,5 +16,6 @@ namespace PICA {
alignas(16) vec4 constantColors[tevStageCount];
alignas(16) vec4 tevBufferColor;
alignas(16) vec4 clipCoords;
};
} // namespace PICA

34
src/core/PICA/shader_gen_glsl.cpp
View file

@ -2,6 +2,18 @@
using namespace PICA;
using namespace PICA::ShaderGen;
static constexpr const char* uniformDefinition = R"(
layout(std140) uniform FragmentUniforms {
int alphaReference;
float depthScale;
float depthOffset;
vec4 constantColors[6];
vec4 tevBufferColor;
vec4 clipCoords;
};
)";
std::string FragmentGenerator::getVertexShader(const PICARegs& regs) {
std::string ret = "";
@ -20,6 +32,8 @@ std::string FragmentGenerator::getVertexShader(const PICARegs& regs) {
)";
}
ret += uniformDefinition;
ret += R"(
layout(location = 0) in vec4 a_coords;
layout(location = 1) in vec4 a_quaternion;
@ -39,7 +53,9 @@ std::string FragmentGenerator::getVertexShader(const PICARegs& regs) {
out vec3 v_view;
out vec2 v_texcoord2;
//out float gl_ClipDistance[2];
#ifndef USING_GLES
out float gl_ClipDistance[2];
#endif
vec4 abgr8888ToVec4(uint abgr) {
const float scale = 1.0 / 255.0;
@ -65,6 +81,11 @@ std::string FragmentGenerator::getVertexShader(const PICARegs& regs) {
v_normal = normalize(rotateVec3ByQuaternion(vec3(0.0, 0.0, 1.0), a_quaternion));
v_tangent = normalize(rotateVec3ByQuaternion(vec3(1.0, 0.0, 0.0), a_quaternion));
v_bitangent = normalize(rotateVec3ByQuaternion(vec3(0.0, 1.0, 0.0), a_quaternion));
#ifndef USING_GLES
gl_ClipDistance[0] = -a_coords.z;
gl_ClipDistance[1] = dot(clipCoords, a_coords);
#endif
}
)";
@ -109,17 +130,10 @@ std::string FragmentGenerator::generate(const PICARegs& regs) {
#ifndef USING_GLES
uniform sampler1DArray u_tex_lighting_lut;
#endif
layout(std140) uniform FragmentUniforms {
int alphaReference;
float depthScale;
float depthOffset;
vec4 constantColors[6];
vec4 tevBufferColor;
};
)";
ret += uniformDefinition;
// Emit main function for fragment shader
// When not initialized, source 13 is set to vec4(0.0) and 15 is set to the vertex colour
ret += R"(

7
src/core/renderer_gl/renderer_gl.cpp
View file

@ -845,6 +845,13 @@ OpenGL::Program& RendererGL::getSpecializedShader() {
uniforms.depthScale = f24::fromRaw(regs[PICA::InternalRegs::DepthScale] & 0xffffff).toFloat32();
uniforms.depthOffset = f24::fromRaw(regs[PICA::InternalRegs::DepthOffset] & 0xffffff).toFloat32();
if (regs[InternalRegs::ClipEnable] & 1) {
uniforms.clipCoords[0] = f24::fromRaw(regs[PICA::InternalRegs::ClipData0] & 0xffffff).toFloat32();
uniforms.clipCoords[1] = f24::fromRaw(regs[PICA::InternalRegs::ClipData1] & 0xffffff).toFloat32();
uniforms.clipCoords[2] = f24::fromRaw(regs[PICA::InternalRegs::ClipData2] & 0xffffff).toFloat32();
uniforms.clipCoords[3] = f24::fromRaw(regs[PICA::InternalRegs::ClipData3] & 0xffffff).toFloat32();
}
// Set up the constant color for the 6 TEV stages
for (int i = 0; i < 6; i++) {
static constexpr std::array<u32, 6> ioBases = {