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-rw-r--r--src/video_core/pica_state.h8
-rw-r--r--src/video_core/renderer_opengl/gl_rasterizer.cpp25
-rw-r--r--src/video_core/renderer_opengl/gl_rasterizer.h3
-rw-r--r--src/video_core/renderer_opengl/gl_shader_gen.cpp10
-rw-r--r--src/video_core/renderer_opengl/gl_state.cpp10
-rw-r--r--src/video_core/renderer_opengl/gl_state.h2
-rw-r--r--src/video_core/swrasterizer/rasterizer.cpp3
7 files changed, 32 insertions, 29 deletions
diff --git a/src/video_core/pica_state.h b/src/video_core/pica_state.h
index 3b00df0b3..2d23d34e6 100644
--- a/src/video_core/pica_state.h
+++ b/src/video_core/pica_state.h
@@ -111,6 +111,14 @@ struct State {
BitField<0, 13, s32> difference; // 1.1.11 fixed point
BitField<13, 11, u32> value; // 0.0.11 fixed point
+
+ float ToFloat() const {
+ return static_cast<float>(value) / 2047.0f;
+ }
+
+ float DiffToFloat() const {
+ return static_cast<float>(difference) / 2047.0f;
+ }
};
std::array<LutEntry, 128> lut;
diff --git a/src/video_core/renderer_opengl/gl_rasterizer.cpp b/src/video_core/renderer_opengl/gl_rasterizer.cpp
index e3dcd831b..ff3f69ba3 100644
--- a/src/video_core/renderer_opengl/gl_rasterizer.cpp
+++ b/src/video_core/renderer_opengl/gl_rasterizer.cpp
@@ -106,16 +106,14 @@ RasterizerOpenGL::RasterizerOpenGL() : shader_dirty(true) {
glTexBuffer(GL_TEXTURE_BUFFER, GL_RG32F, lighting_lut_buffer.handle);
// Setup the LUT for the fog
- {
- fog_lut.Create();
- state.fog_lut.texture_1d = fog_lut.handle;
- }
+ fog_lut.Create();
+ state.fog_lut.texture_buffer = fog_lut.handle;
state.Apply();
-
+ fog_lut_buffer.Create();
+ glBindBuffer(GL_TEXTURE_BUFFER, fog_lut_buffer.handle);
+ glBufferData(GL_TEXTURE_BUFFER, sizeof(GLfloat) * 2 * 128, nullptr, GL_DYNAMIC_DRAW);
glActiveTexture(TextureUnits::FogLUT.Enum());
- glTexImage1D(GL_TEXTURE_1D, 0, GL_R32UI, 128, 0, GL_RED_INTEGER, GL_UNSIGNED_INT, nullptr);
- glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
- glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+ glTexBuffer(GL_TEXTURE_BUFFER, GL_RG32F, fog_lut_buffer.handle);
// Setup the noise LUT for proctex
proctex_noise_lut.Create();
@@ -1356,16 +1354,17 @@ void RasterizerOpenGL::SyncFogColor() {
}
void RasterizerOpenGL::SyncFogLUT() {
- std::array<GLuint, 128> new_data;
+ std::array<GLvec2, 128> new_data;
std::transform(Pica::g_state.fog.lut.begin(), Pica::g_state.fog.lut.end(), new_data.begin(),
- [](const auto& entry) { return entry.raw; });
+ [](const auto& entry) {
+ return GLvec2{entry.ToFloat(), entry.DiffToFloat()};
+ });
if (new_data != fog_lut_data) {
fog_lut_data = new_data;
- glActiveTexture(TextureUnits::FogLUT.Enum());
- glTexSubImage1D(GL_TEXTURE_1D, 0, 0, 128, GL_RED_INTEGER, GL_UNSIGNED_INT,
- fog_lut_data.data());
+ glBindBuffer(GL_TEXTURE_BUFFER, fog_lut_buffer.handle);
+ glBufferSubData(GL_TEXTURE_BUFFER, 0, new_data.size() * sizeof(GLvec2), new_data.data());
}
}
diff --git a/src/video_core/renderer_opengl/gl_rasterizer.h b/src/video_core/renderer_opengl/gl_rasterizer.h
index 79acd4230..a433c1d4a 100644
--- a/src/video_core/renderer_opengl/gl_rasterizer.h
+++ b/src/video_core/renderer_opengl/gl_rasterizer.h
@@ -283,8 +283,9 @@ private:
OGLTexture lighting_lut;
std::array<std::array<GLvec2, 256>, Pica::LightingRegs::NumLightingSampler> lighting_lut_data{};
+ OGLBuffer fog_lut_buffer;
OGLTexture fog_lut;
- std::array<GLuint, 128> fog_lut_data{};
+ std::array<GLvec2, 128> fog_lut_data{};
OGLTexture proctex_noise_lut;
std::array<GLvec2, 128> proctex_noise_lut_data{};
diff --git a/src/video_core/renderer_opengl/gl_shader_gen.cpp b/src/video_core/renderer_opengl/gl_shader_gen.cpp
index 0c7c4dd5c..c93b108fb 100644
--- a/src/video_core/renderer_opengl/gl_shader_gen.cpp
+++ b/src/video_core/renderer_opengl/gl_shader_gen.cpp
@@ -1052,7 +1052,7 @@ layout (std140) uniform shader_data {
uniform sampler2D tex[3];
uniform samplerBuffer lighting_lut;
-uniform usampler1D fog_lut;
+uniform samplerBuffer fog_lut;
uniform sampler1D proctex_noise_lut;
uniform sampler1D proctex_color_map;
uniform sampler1D proctex_alpha_map;
@@ -1145,12 +1145,8 @@ vec4 secondary_fragment_color = vec4(0.0);
// Generate clamped fog factor from LUT for given fog index
out += "float fog_i = clamp(floor(fog_index), 0.0, 127.0);\n";
out += "float fog_f = fog_index - fog_i;\n";
- out += "uint fog_lut_entry = texelFetch(fog_lut, int(fog_i), 0).r;\n";
- out += "float fog_lut_entry_difference = float(int((fog_lut_entry & 0x1FFFU) << 19U) >> "
- "19);\n"; // Extract signed difference
- out += "float fog_lut_entry_value = float((fog_lut_entry >> 13U) & 0x7FFU);\n";
- out += "float fog_factor = (fog_lut_entry_value + fog_lut_entry_difference * fog_f) / "
- "2047.0;\n";
+ out += "vec2 fog_lut_entry = texelFetch(fog_lut, int(fog_i)).rg;\n";
+ out += "float fog_factor = fog_lut_entry.r + fog_lut_entry.g * fog_f;\n";
out += "fog_factor = clamp(fog_factor, 0.0, 1.0);\n";
// Blend the fog
diff --git a/src/video_core/renderer_opengl/gl_state.cpp b/src/video_core/renderer_opengl/gl_state.cpp
index 14e63115c..eface2dea 100644
--- a/src/video_core/renderer_opengl/gl_state.cpp
+++ b/src/video_core/renderer_opengl/gl_state.cpp
@@ -54,7 +54,7 @@ OpenGLState::OpenGLState() {
lighting_lut.texture_buffer = 0;
- fog_lut.texture_1d = 0;
+ fog_lut.texture_buffer = 0;
proctex_lut.texture_1d = 0;
proctex_diff_lut.texture_1d = 0;
@@ -198,9 +198,9 @@ void OpenGLState::Apply() const {
}
// Fog LUT
- if (fog_lut.texture_1d != cur_state.fog_lut.texture_1d) {
+ if (fog_lut.texture_buffer != cur_state.fog_lut.texture_buffer) {
glActiveTexture(TextureUnits::FogLUT.Enum());
- glBindTexture(GL_TEXTURE_1D, fog_lut.texture_1d);
+ glBindTexture(GL_TEXTURE_BUFFER, fog_lut.texture_buffer);
}
// ProcTex Noise LUT
@@ -272,8 +272,8 @@ void OpenGLState::ResetTexture(GLuint handle) {
}
if (cur_state.lighting_lut.texture_buffer == handle)
cur_state.lighting_lut.texture_buffer = 0;
- if (cur_state.fog_lut.texture_1d == handle)
- cur_state.fog_lut.texture_1d = 0;
+ if (cur_state.fog_lut.texture_buffer == handle)
+ cur_state.fog_lut.texture_buffer = 0;
if (cur_state.proctex_noise_lut.texture_1d == handle)
cur_state.proctex_noise_lut.texture_1d = 0;
if (cur_state.proctex_color_map.texture_1d == handle)
diff --git a/src/video_core/renderer_opengl/gl_state.h b/src/video_core/renderer_opengl/gl_state.h
index bb0218708..1efcf0811 100644
--- a/src/video_core/renderer_opengl/gl_state.h
+++ b/src/video_core/renderer_opengl/gl_state.h
@@ -91,7 +91,7 @@ public:
} lighting_lut;
struct {
- GLuint texture_1d; // GL_TEXTURE_BINDING_1D
+ GLuint texture_buffer; // GL_TEXTURE_BINDING_BUFFER
} fog_lut;
struct {
diff --git a/src/video_core/swrasterizer/rasterizer.cpp b/src/video_core/swrasterizer/rasterizer.cpp
index cd7b6c39d..512e81c08 100644
--- a/src/video_core/swrasterizer/rasterizer.cpp
+++ b/src/video_core/swrasterizer/rasterizer.cpp
@@ -584,8 +584,7 @@ static void ProcessTriangleInternal(const Vertex& v0, const Vertex& v1, const Ve
float fog_i = MathUtil::Clamp(floorf(fog_index), 0.0f, 127.0f);
float fog_f = fog_index - fog_i;
const auto& fog_lut_entry = g_state.fog.lut[static_cast<unsigned int>(fog_i)];
- float fog_factor = (fog_lut_entry.value + fog_lut_entry.difference * fog_f) /
- 2047.0f; // This is signed fixed point 1.11
+ float fog_factor = fog_lut_entry.ToFloat() + fog_lut_entry.DiffToFloat() * fog_f;
fog_factor = MathUtil::Clamp(fog_factor, 0.0f, 1.0f);
// Blend the fog
generated by cgit v1.2.3 (git 2.25.1) at 2025-11-04 03:36:07 +0000