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citra/src/video_core/renderer_opengl/gl_rasterizer.cpp

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// Copyright 2015 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include "core/settings.h"
#include "core/hw/gpu.h"
#include "video_core/color.h"
#include "video_core/pica.h"
#include "video_core/utils.h"
#include "video_core/renderer_opengl/gl_rasterizer.h"
#include "video_core/renderer_opengl/gl_shaders.h"
#include "video_core/renderer_opengl/gl_shader_util.h"
#include "video_core/renderer_opengl/pica_to_gl.h"
#include "generated/gl_3_2_core.h"
#include <memory>
static bool IsPassThroughTevStage(const Pica::Regs::TevStageConfig& stage) {
return (stage.color_op == Pica::Regs::TevStageConfig::Operation::Replace &&
stage.alpha_op == Pica::Regs::TevStageConfig::Operation::Replace &&
stage.color_source1 == Pica::Regs::TevStageConfig::Source::Previous &&
stage.alpha_source1 == Pica::Regs::TevStageConfig::Source::Previous &&
stage.color_modifier1 == Pica::Regs::TevStageConfig::ColorModifier::SourceColor &&
stage.alpha_modifier1 == Pica::Regs::TevStageConfig::AlphaModifier::SourceAlpha &&
stage.GetColorMultiplier() == 1 &&
stage.GetAlphaMultiplier() == 1);
}
RasterizerOpenGL::RasterizerOpenGL() : last_fb_color_addr(0), last_fb_depth_addr(0) { }
RasterizerOpenGL::~RasterizerOpenGL() { }
void RasterizerOpenGL::InitObjects() {
// Create the hardware shader program and get attrib/uniform locations
shader.Create(GLShaders::g_vertex_shader_hw, GLShaders::g_fragment_shader_hw);
attrib_position = glGetAttribLocation(shader.handle, "vert_position");
attrib_color = glGetAttribLocation(shader.handle, "vert_color");
attrib_texcoords = glGetAttribLocation(shader.handle, "vert_texcoords");
uniform_alphatest_enabled = glGetUniformLocation(shader.handle, "alphatest_enabled");
uniform_alphatest_func = glGetUniformLocation(shader.handle, "alphatest_func");
uniform_alphatest_ref = glGetUniformLocation(shader.handle, "alphatest_ref");
uniform_tex = glGetUniformLocation(shader.handle, "tex");
uniform_tev_combiner_buffer_color = glGetUniformLocation(shader.handle, "tev_combiner_buffer_color");
const auto tev_stages = Pica::g_state.regs.GetTevStages();
for (unsigned tev_stage_index = 0; tev_stage_index < tev_stages.size(); ++tev_stage_index) {
auto& uniform_tev_cfg = uniform_tev_cfgs[tev_stage_index];
std::string tev_ref_str = "tev_cfgs[" + std::to_string(tev_stage_index) + "]";
uniform_tev_cfg.enabled = glGetUniformLocation(shader.handle, (tev_ref_str + ".enabled").c_str());
uniform_tev_cfg.color_sources = glGetUniformLocation(shader.handle, (tev_ref_str + ".color_sources").c_str());
uniform_tev_cfg.alpha_sources = glGetUniformLocation(shader.handle, (tev_ref_str + ".alpha_sources").c_str());
uniform_tev_cfg.color_modifiers = glGetUniformLocation(shader.handle, (tev_ref_str + ".color_modifiers").c_str());
uniform_tev_cfg.alpha_modifiers = glGetUniformLocation(shader.handle, (tev_ref_str + ".alpha_modifiers").c_str());
uniform_tev_cfg.color_alpha_op = glGetUniformLocation(shader.handle, (tev_ref_str + ".color_alpha_op").c_str());
uniform_tev_cfg.color_alpha_multiplier = glGetUniformLocation(shader.handle, (tev_ref_str + ".color_alpha_multiplier").c_str());
uniform_tev_cfg.const_color = glGetUniformLocation(shader.handle, (tev_ref_str + ".const_color").c_str());
uniform_tev_cfg.updates_combiner_buffer_color_alpha = glGetUniformLocation(shader.handle, (tev_ref_str + ".updates_combiner_buffer_color_alpha").c_str());
}
// Generate VBO and VAO
vertex_buffer.Create();
vertex_array.Create();
// Update OpenGL state
state.draw.vertex_array = vertex_array.handle;
state.draw.vertex_buffer = vertex_buffer.handle;
state.draw.shader_program = shader.handle;
state.Apply();
// Set the texture samplers to correspond to different texture units
glUniform1i(uniform_tex, 0);
glUniform1i(uniform_tex + 1, 1);
glUniform1i(uniform_tex + 2, 2);
// Set vertex attributes
glVertexAttribPointer(attrib_position, 4, GL_FLOAT, GL_FALSE, sizeof(HardwareVertex), (GLvoid*)offsetof(HardwareVertex, position));
glVertexAttribPointer(attrib_color, 4, GL_FLOAT, GL_FALSE, sizeof(HardwareVertex), (GLvoid*)offsetof(HardwareVertex, color));
glVertexAttribPointer(attrib_texcoords, 2, GL_FLOAT, GL_FALSE, sizeof(HardwareVertex), (GLvoid*)offsetof(HardwareVertex, tex_coord0));
glVertexAttribPointer(attrib_texcoords + 1, 2, GL_FLOAT, GL_FALSE, sizeof(HardwareVertex), (GLvoid*)offsetof(HardwareVertex, tex_coord1));
glVertexAttribPointer(attrib_texcoords + 2, 2, GL_FLOAT, GL_FALSE, sizeof(HardwareVertex), (GLvoid*)offsetof(HardwareVertex, tex_coord2));
glEnableVertexAttribArray(attrib_position);
glEnableVertexAttribArray(attrib_color);
glEnableVertexAttribArray(attrib_texcoords);
glEnableVertexAttribArray(attrib_texcoords + 1);
glEnableVertexAttribArray(attrib_texcoords + 2);
// Create textures for OGL framebuffer that will be rendered to, initially 1x1 to succeed in framebuffer creation
fb_color_texture.texture.Create();
ReconfigureColorTexture(fb_color_texture, Pica::Regs::ColorFormat::RGBA8, 1, 1);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
fb_depth_texture.texture.Create();
ReconfigureDepthTexture(fb_depth_texture, Pica::Regs::DepthFormat::D16, 1, 1);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_COMPARE_FUNC, GL_LEQUAL);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_COMPARE_MODE, GL_NONE);
// Configure OpenGL framebuffer
framebuffer.Create();
state.draw.framebuffer = framebuffer.handle;
// Unbind texture to allow binding to framebuffer
state.texture_units[0].enabled_2d = true;
state.texture_units[0].texture_2d = 0;
state.Apply();
glActiveTexture(GL_TEXTURE0);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, fb_color_texture.texture.handle, 0);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, fb_depth_texture.texture.handle, 0);
ASSERT_MSG(glCheckFramebufferStatus(GL_FRAMEBUFFER) == GL_FRAMEBUFFER_COMPLETE,
"OpenGL rasterizer framebuffer setup failed, status %X", glCheckFramebufferStatus(GL_FRAMEBUFFER));
}
void RasterizerOpenGL::Reset() {
const auto& regs = Pica::g_state.regs;
SyncCullMode();
SyncBlendEnabled();
SyncBlendFuncs();
SyncBlendColor();
SyncAlphaTest();
SyncStencilTest();
SyncDepthTest();
// TEV stage 0
SyncTevSources(0, regs.tev_stage0);
SyncTevModifiers(0, regs.tev_stage0);
SyncTevOps(0, regs.tev_stage0);
SyncTevColor(0, regs.tev_stage0);
SyncTevMultipliers(0, regs.tev_stage0);
// TEV stage 1
SyncTevSources(1, regs.tev_stage1);
SyncTevModifiers(1, regs.tev_stage1);
SyncTevOps(1, regs.tev_stage1);
SyncTevColor(1, regs.tev_stage1);
SyncTevMultipliers(1, regs.tev_stage1);
// TEV stage 2
SyncTevSources(2, regs.tev_stage2);
SyncTevModifiers(2, regs.tev_stage2);
SyncTevOps(2, regs.tev_stage2);
SyncTevColor(2, regs.tev_stage2);
SyncTevMultipliers(2, regs.tev_stage2);
// TEV stage 3
SyncTevSources(3, regs.tev_stage3);
SyncTevModifiers(3, regs.tev_stage3);
SyncTevOps(3, regs.tev_stage3);
SyncTevColor(3, regs.tev_stage3);
SyncTevMultipliers(3, regs.tev_stage3);
// TEV stage 4
SyncTevSources(4, regs.tev_stage4);
SyncTevModifiers(4, regs.tev_stage4);
SyncTevOps(4, regs.tev_stage4);
SyncTevColor(4, regs.tev_stage4);
SyncTevMultipliers(4, regs.tev_stage4);
// TEV stage 5
SyncTevSources(5, regs.tev_stage5);
SyncTevModifiers(5, regs.tev_stage5);
SyncTevOps(5, regs.tev_stage5);
SyncTevColor(5, regs.tev_stage5);
SyncTevMultipliers(5, regs.tev_stage5);
SyncCombinerColor();
SyncCombinerWriteFlags();
res_cache.FullFlush();
}
void RasterizerOpenGL::AddTriangle(const Pica::VertexShader::OutputVertex& v0,
const Pica::VertexShader::OutputVertex& v1,
const Pica::VertexShader::OutputVertex& v2) {
vertex_batch.push_back(HardwareVertex(v0));
vertex_batch.push_back(HardwareVertex(v1));
vertex_batch.push_back(HardwareVertex(v2));
}
void RasterizerOpenGL::DrawTriangles() {
SyncFramebuffer();
SyncDrawState();
glBufferData(GL_ARRAY_BUFFER, vertex_batch.size() * sizeof(HardwareVertex), vertex_batch.data(), GL_STREAM_DRAW);
glDrawArrays(GL_TRIANGLES, 0, (GLsizei)vertex_batch.size());
vertex_batch.clear();
// TODO: Flush the resource cache at the current depth and color framebuffer addresses for render-to-texture
}
void RasterizerOpenGL::CommitFramebuffer() {
CommitColorBuffer();
CommitDepthBuffer();
}
void RasterizerOpenGL::NotifyPicaRegisterChanged(u32 id) {
const auto& regs = Pica::g_state.regs;
if (!Settings::values.use_hw_renderer)
return;
switch(id) {
// Culling
case PICA_REG_INDEX(cull_mode):
SyncCullMode();
break;
// Blending
case PICA_REG_INDEX(output_merger.alphablend_enable):
SyncBlendEnabled();
break;
case PICA_REG_INDEX(output_merger.alpha_blending):
SyncBlendFuncs();
break;
case PICA_REG_INDEX(output_merger.blend_const):
SyncBlendColor();
break;
// Alpha test
case PICA_REG_INDEX(output_merger.alpha_test):
SyncAlphaTest();
break;
// Stencil test
case PICA_REG_INDEX(output_merger.stencil_test):
SyncStencilTest();
break;
// Depth test
case PICA_REG_INDEX(output_merger.depth_test_enable):
SyncDepthTest();
break;
// TEV stage 0
case PICA_REG_INDEX(tev_stage0.color_source1):
SyncTevSources(0, regs.tev_stage0);
break;
case PICA_REG_INDEX(tev_stage0.color_modifier1):
SyncTevModifiers(0, regs.tev_stage0);
break;
case PICA_REG_INDEX(tev_stage0.color_op):
SyncTevOps(0, regs.tev_stage0);
break;
case PICA_REG_INDEX(tev_stage0.const_r):
SyncTevColor(0, regs.tev_stage0);
break;
case PICA_REG_INDEX(tev_stage0.color_scale):
SyncTevMultipliers(0, regs.tev_stage0);
break;
// TEV stage 1
case PICA_REG_INDEX(tev_stage1.color_source1):
SyncTevSources(1, regs.tev_stage1);
break;
case PICA_REG_INDEX(tev_stage1.color_modifier1):
SyncTevModifiers(1, regs.tev_stage1);
break;
case PICA_REG_INDEX(tev_stage1.color_op):
SyncTevOps(1, regs.tev_stage1);
break;
case PICA_REG_INDEX(tev_stage1.const_r):
SyncTevColor(1, regs.tev_stage1);
break;
case PICA_REG_INDEX(tev_stage1.color_scale):
SyncTevMultipliers(1, regs.tev_stage1);
break;
// TEV stage 2
case PICA_REG_INDEX(tev_stage2.color_source1):
SyncTevSources(2, regs.tev_stage2);
break;
case PICA_REG_INDEX(tev_stage2.color_modifier1):
SyncTevModifiers(2, regs.tev_stage2);
break;
case PICA_REG_INDEX(tev_stage2.color_op):
SyncTevOps(2, regs.tev_stage2);
break;
case PICA_REG_INDEX(tev_stage2.const_r):
SyncTevColor(2, regs.tev_stage2);
break;
case PICA_REG_INDEX(tev_stage2.color_scale):
SyncTevMultipliers(2, regs.tev_stage2);
break;
// TEV stage 3
case PICA_REG_INDEX(tev_stage3.color_source1):
SyncTevSources(3, regs.tev_stage3);
break;
case PICA_REG_INDEX(tev_stage3.color_modifier1):
SyncTevModifiers(3, regs.tev_stage3);
break;
case PICA_REG_INDEX(tev_stage3.color_op):
SyncTevOps(3, regs.tev_stage3);
break;
case PICA_REG_INDEX(tev_stage3.const_r):
SyncTevColor(3, regs.tev_stage3);
break;
case PICA_REG_INDEX(tev_stage3.color_scale):
SyncTevMultipliers(3, regs.tev_stage3);
break;
// TEV stage 4
case PICA_REG_INDEX(tev_stage4.color_source1):
SyncTevSources(4, regs.tev_stage4);
break;
case PICA_REG_INDEX(tev_stage4.color_modifier1):
SyncTevModifiers(4, regs.tev_stage4);
break;
case PICA_REG_INDEX(tev_stage4.color_op):
SyncTevOps(4, regs.tev_stage4);
break;
case PICA_REG_INDEX(tev_stage4.const_r):
SyncTevColor(4, regs.tev_stage4);
break;
case PICA_REG_INDEX(tev_stage4.color_scale):
SyncTevMultipliers(4, regs.tev_stage4);
break;
// TEV stage 5
case PICA_REG_INDEX(tev_stage5.color_source1):
SyncTevSources(5, regs.tev_stage5);
break;
case PICA_REG_INDEX(tev_stage5.color_modifier1):
SyncTevModifiers(5, regs.tev_stage5);
break;
case PICA_REG_INDEX(tev_stage5.color_op):
SyncTevOps(5, regs.tev_stage5);
break;
case PICA_REG_INDEX(tev_stage5.const_r):
SyncTevColor(5, regs.tev_stage5);
break;
case PICA_REG_INDEX(tev_stage5.color_scale):
SyncTevMultipliers(5, regs.tev_stage5);
break;
// TEV combiner buffer color
case PICA_REG_INDEX(tev_combiner_buffer_color):
SyncCombinerColor();
break;
// TEV combiner buffer write flags
case PICA_REG_INDEX(tev_combiner_buffer_input):
SyncCombinerWriteFlags();
break;
}
}
void RasterizerOpenGL::NotifyPreRead(PAddr addr, u32 size) {
const auto& regs = Pica::g_state.regs;
if (!Settings::values.use_hw_renderer)
return;
PAddr cur_fb_color_addr = regs.framebuffer.GetColorBufferPhysicalAddress();
u32 cur_fb_color_size = Pica::Regs::BytesPerColorPixel(regs.framebuffer.color_format)
* regs.framebuffer.GetWidth() * regs.framebuffer.GetHeight();
PAddr cur_fb_depth_addr = regs.framebuffer.GetDepthBufferPhysicalAddress();
u32 cur_fb_depth_size = Pica::Regs::BytesPerDepthPixel(regs.framebuffer.depth_format)
* regs.framebuffer.GetWidth() * regs.framebuffer.GetHeight();
// If source memory region overlaps 3DS framebuffers, commit them before the copy happens
if (MathUtil::IntervalsIntersect(addr, size, cur_fb_color_addr, cur_fb_color_size))
CommitColorBuffer();
if (MathUtil::IntervalsIntersect(addr, size, cur_fb_depth_addr, cur_fb_depth_size))
CommitDepthBuffer();
}
void RasterizerOpenGL::NotifyFlush(PAddr addr, u32 size) {
const auto& regs = Pica::g_state.regs;
if (!Settings::values.use_hw_renderer)
return;
PAddr cur_fb_color_addr = regs.framebuffer.GetColorBufferPhysicalAddress();
u32 cur_fb_color_size = Pica::Regs::BytesPerColorPixel(regs.framebuffer.color_format)
* regs.framebuffer.GetWidth() * regs.framebuffer.GetHeight();
PAddr cur_fb_depth_addr = regs.framebuffer.GetDepthBufferPhysicalAddress();
u32 cur_fb_depth_size = Pica::Regs::BytesPerDepthPixel(regs.framebuffer.depth_format)
* regs.framebuffer.GetWidth() * regs.framebuffer.GetHeight();
// If modified memory region overlaps 3DS framebuffers, reload their contents into OpenGL
if (MathUtil::IntervalsIntersect(addr, size, cur_fb_color_addr, cur_fb_color_size))
ReloadColorBuffer();
if (MathUtil::IntervalsIntersect(addr, size, cur_fb_depth_addr, cur_fb_depth_size))
ReloadDepthBuffer();
// Notify cache of flush in case the region touches a cached resource
res_cache.NotifyFlush(addr, size);
}
void RasterizerOpenGL::ReconfigureColorTexture(TextureInfo& texture, Pica::Regs::ColorFormat format, u32 width, u32 height) {
GLint internal_format;
texture.format = format;
texture.width = width;
texture.height = height;
switch (format) {
case Pica::Regs::ColorFormat::RGBA8:
internal_format = GL_RGBA;
texture.gl_format = GL_RGBA;
texture.gl_type = GL_UNSIGNED_INT_8_8_8_8;
break;
case Pica::Regs::ColorFormat::RGB8:
// This pixel format uses BGR since GL_UNSIGNED_BYTE specifies byte-order, unlike every
// specific OpenGL type used in this function using native-endian (that is, little-endian
// mostly everywhere) for words or half-words.
// TODO: check how those behave on big-endian processors.
internal_format = GL_RGB;
texture.gl_format = GL_BGR;
texture.gl_type = GL_UNSIGNED_BYTE;
break;
case Pica::Regs::ColorFormat::RGB5A1:
internal_format = GL_RGBA;
texture.gl_format = GL_RGBA;
texture.gl_type = GL_UNSIGNED_SHORT_5_5_5_1;
break;
case Pica::Regs::ColorFormat::RGB565:
internal_format = GL_RGB;
texture.gl_format = GL_RGB;
texture.gl_type = GL_UNSIGNED_SHORT_5_6_5;
break;
case Pica::Regs::ColorFormat::RGBA4:
internal_format = GL_RGBA;
texture.gl_format = GL_RGBA;
texture.gl_type = GL_UNSIGNED_SHORT_4_4_4_4;
break;
default:
LOG_CRITICAL(Render_OpenGL, "Unknown framebuffer texture color format %x", format);
UNIMPLEMENTED();
break;
}
state.texture_units[0].enabled_2d = true;
state.texture_units[0].texture_2d = texture.texture.handle;
state.Apply();
glActiveTexture(GL_TEXTURE0);
glTexImage2D(GL_TEXTURE_2D, 0, internal_format, texture.width, texture.height, 0,
texture.gl_format, texture.gl_type, nullptr);
}
void RasterizerOpenGL::ReconfigureDepthTexture(DepthTextureInfo& texture, Pica::Regs::DepthFormat format, u32 width, u32 height) {
GLint internal_format;
texture.format = format;
texture.width = width;
texture.height = height;
switch (format) {
case Pica::Regs::DepthFormat::D16:
internal_format = GL_DEPTH_COMPONENT16;
texture.gl_format = GL_DEPTH_COMPONENT;
texture.gl_type = GL_UNSIGNED_SHORT;
break;
case Pica::Regs::DepthFormat::D24:
internal_format = GL_DEPTH_COMPONENT24;
texture.gl_format = GL_DEPTH_COMPONENT;
texture.gl_type = GL_UNSIGNED_INT_24_8;
break;
case Pica::Regs::DepthFormat::D24S8:
internal_format = GL_DEPTH24_STENCIL8;
texture.gl_format = GL_DEPTH_STENCIL;
texture.gl_type = GL_UNSIGNED_INT_24_8;
break;
default:
LOG_CRITICAL(Render_OpenGL, "Unknown framebuffer texture depth format %x", format);
UNIMPLEMENTED();
break;
}
state.texture_units[0].enabled_2d = true;
state.texture_units[0].texture_2d = texture.texture.handle;
state.Apply();
glActiveTexture(GL_TEXTURE0);
glTexImage2D(GL_TEXTURE_2D, 0, internal_format, texture.width, texture.height, 0,
texture.gl_format, texture.gl_type, nullptr);
}
void RasterizerOpenGL::SyncFramebuffer() {
const auto& regs = Pica::g_state.regs;
PAddr cur_fb_color_addr = regs.framebuffer.GetColorBufferPhysicalAddress();
Pica::Regs::ColorFormat new_fb_color_format = regs.framebuffer.color_format;
PAddr cur_fb_depth_addr = regs.framebuffer.GetDepthBufferPhysicalAddress();
Pica::Regs::DepthFormat new_fb_depth_format = regs.framebuffer.depth_format;
bool fb_size_changed = fb_color_texture.width != regs.framebuffer.GetWidth() ||
fb_color_texture.height != regs.framebuffer.GetHeight();
bool color_fb_prop_changed = fb_color_texture.format != new_fb_color_format ||
fb_size_changed;
bool depth_fb_prop_changed = fb_depth_texture.format != new_fb_depth_format ||
fb_size_changed;
bool color_fb_modified = last_fb_color_addr != cur_fb_color_addr ||
color_fb_prop_changed;
bool depth_fb_modified = last_fb_depth_addr != cur_fb_depth_addr ||
depth_fb_prop_changed;
// Commit if framebuffer modified in any way
if (color_fb_modified)
CommitColorBuffer();
if (depth_fb_modified)
CommitDepthBuffer();
// Reconfigure framebuffer textures if any property has changed
if (color_fb_prop_changed) {
ReconfigureColorTexture(fb_color_texture, new_fb_color_format,
regs.framebuffer.GetWidth(), regs.framebuffer.GetHeight());
}
if (depth_fb_prop_changed) {
ReconfigureDepthTexture(fb_depth_texture, new_fb_depth_format,
regs.framebuffer.GetWidth(), regs.framebuffer.GetHeight());
// Only attach depth buffer as stencil if it supports stencil
switch (new_fb_depth_format) {
case Pica::Regs::DepthFormat::D16:
case Pica::Regs::DepthFormat::D24:
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_TEXTURE_2D, 0, 0);
break;
case Pica::Regs::DepthFormat::D24S8:
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_TEXTURE_2D, fb_depth_texture.texture.handle, 0);
break;
default:
LOG_CRITICAL(Render_OpenGL, "Unknown framebuffer depth format %x", new_fb_depth_format);
UNIMPLEMENTED();
break;
}
}
// Load buffer data again if fb modified in any way
if (color_fb_modified) {
last_fb_color_addr = cur_fb_color_addr;
ReloadColorBuffer();
}
if (depth_fb_modified) {
last_fb_depth_addr = cur_fb_depth_addr;
ReloadDepthBuffer();
}
}
void RasterizerOpenGL::SyncCullMode() {
const auto& regs = Pica::g_state.regs;
switch (regs.cull_mode) {
case Pica::Regs::CullMode::KeepAll:
state.cull.enabled = false;
break;
case Pica::Regs::CullMode::KeepClockWise:
state.cull.enabled = true;
state.cull.mode = GL_BACK;
break;
case Pica::Regs::CullMode::KeepCounterClockWise:
state.cull.enabled = true;
state.cull.mode = GL_FRONT;
break;
default:
LOG_CRITICAL(Render_OpenGL, "Unknown cull mode %d", regs.cull_mode.Value());
UNIMPLEMENTED();
break;
}
}
void RasterizerOpenGL::SyncBlendEnabled() {
state.blend.enabled = (Pica::g_state.regs.output_merger.alphablend_enable == 1);
}
void RasterizerOpenGL::SyncBlendFuncs() {
const auto& regs = Pica::g_state.regs;
state.blend.src_rgb_func = PicaToGL::BlendFunc(regs.output_merger.alpha_blending.factor_source_rgb);
state.blend.dst_rgb_func = PicaToGL::BlendFunc(regs.output_merger.alpha_blending.factor_dest_rgb);
state.blend.src_a_func = PicaToGL::BlendFunc(regs.output_merger.alpha_blending.factor_source_a);
state.blend.dst_a_func = PicaToGL::BlendFunc(regs.output_merger.alpha_blending.factor_dest_a);
}
void RasterizerOpenGL::SyncBlendColor() {
auto blend_color = PicaToGL::ColorRGBA8((u8*)&Pica::g_state.regs.output_merger.blend_const.r);
state.blend.color.red = blend_color[0];
state.blend.color.green = blend_color[1];
state.blend.color.blue = blend_color[2];
state.blend.color.alpha = blend_color[3];
}
void RasterizerOpenGL::SyncAlphaTest() {
const auto& regs = Pica::g_state.regs;
glUniform1i(uniform_alphatest_enabled, regs.output_merger.alpha_test.enable);
glUniform1i(uniform_alphatest_func, (GLint)regs.output_merger.alpha_test.func.Value());
glUniform1f(uniform_alphatest_ref, regs.output_merger.alpha_test.ref / 255.0f);
}
void RasterizerOpenGL::SyncStencilTest() {
// TODO: Implement stencil test, mask, and op
}
void RasterizerOpenGL::SyncDepthTest() {
const auto& regs = Pica::g_state.regs;
state.depth.test_enabled = (regs.output_merger.depth_test_enable == 1);
state.depth.test_func = PicaToGL::CompareFunc(regs.output_merger.depth_test_func);
state.depth.write_mask = regs.output_merger.depth_write_enable ? GL_TRUE : GL_FALSE;
}
void RasterizerOpenGL::SyncTevSources(unsigned stage_index, const Pica::Regs::TevStageConfig& config) {
GLint color_srcs[3] = { (GLint)config.color_source1.Value(),
(GLint)config.color_source2.Value(),
(GLint)config.color_source3.Value() };
GLint alpha_srcs[3] = { (GLint)config.alpha_source1.Value(),
(GLint)config.alpha_source2.Value(),
(GLint)config.alpha_source3.Value() };
glUniform3iv(uniform_tev_cfgs[stage_index].color_sources, 1, color_srcs);
glUniform3iv(uniform_tev_cfgs[stage_index].alpha_sources, 1, alpha_srcs);
}
void RasterizerOpenGL::SyncTevModifiers(unsigned stage_index, const Pica::Regs::TevStageConfig& config) {
GLint color_mods[3] = { (GLint)config.color_modifier1.Value(),
(GLint)config.color_modifier2.Value(),
(GLint)config.color_modifier3.Value() };
GLint alpha_mods[3] = { (GLint)config.alpha_modifier1.Value(),
(GLint)config.alpha_modifier2.Value(),
(GLint)config.alpha_modifier3.Value() };
glUniform3iv(uniform_tev_cfgs[stage_index].color_modifiers, 1, color_mods);
glUniform3iv(uniform_tev_cfgs[stage_index].alpha_modifiers, 1, alpha_mods);
}
void RasterizerOpenGL::SyncTevOps(unsigned stage_index, const Pica::Regs::TevStageConfig& config) {
glUniform2i(uniform_tev_cfgs[stage_index].color_alpha_op, (GLint)config.color_op.Value(), (GLint)config.alpha_op.Value());
}
void RasterizerOpenGL::SyncTevColor(unsigned stage_index, const Pica::Regs::TevStageConfig& config) {
auto const_color = PicaToGL::ColorRGBA8((u8*)&config.const_r);
glUniform4fv(uniform_tev_cfgs[stage_index].const_color, 1, const_color.data());
}
void RasterizerOpenGL::SyncTevMultipliers(unsigned stage_index, const Pica::Regs::TevStageConfig& config) {
glUniform2i(uniform_tev_cfgs[stage_index].color_alpha_multiplier, config.GetColorMultiplier(), config.GetAlphaMultiplier());
}
void RasterizerOpenGL::SyncCombinerColor() {
auto combiner_color = PicaToGL::ColorRGBA8((u8*)&Pica::g_state.regs.tev_combiner_buffer_color.r);
glUniform4fv(uniform_tev_combiner_buffer_color, 1, combiner_color.data());
}
void RasterizerOpenGL::SyncCombinerWriteFlags() {
const auto& regs = Pica::g_state.regs;
const auto tev_stages = regs.GetTevStages();
for (unsigned tev_stage_index = 0; tev_stage_index < tev_stages.size(); ++tev_stage_index) {
glUniform2i(uniform_tev_cfgs[tev_stage_index].updates_combiner_buffer_color_alpha,
regs.tev_combiner_buffer_input.TevStageUpdatesCombinerBufferColor(tev_stage_index),
regs.tev_combiner_buffer_input.TevStageUpdatesCombinerBufferAlpha(tev_stage_index));
}
}
void RasterizerOpenGL::SyncDrawState() {
const auto& regs = Pica::g_state.regs;
// Sync the viewport
GLsizei viewport_width = (GLsizei)Pica::float24::FromRawFloat24(regs.viewport_size_x).ToFloat32() * 2;
GLsizei viewport_height = (GLsizei)Pica::float24::FromRawFloat24(regs.viewport_size_y).ToFloat32() * 2;
// OpenGL uses different y coordinates, so negate corner offset and flip origin
// TODO: Ensure viewport_corner.x should not be negated or origin flipped
// TODO: Use floating-point viewports for accuracy if supported
glViewport((GLsizei)static_cast<float>(regs.viewport_corner.x),
-(GLsizei)static_cast<float>(regs.viewport_corner.y)
+ regs.framebuffer.GetHeight() - viewport_height,
viewport_width, viewport_height);
// Sync bound texture(s), upload if not cached
const auto pica_textures = regs.GetTextures();
for (unsigned texture_index = 0; texture_index < pica_textures.size(); ++texture_index) {
const auto& texture = pica_textures[texture_index];
if (texture.enabled) {
state.texture_units[texture_index].enabled_2d = true;
res_cache.LoadAndBindTexture(state, texture_index, texture);
} else {
state.texture_units[texture_index].enabled_2d = false;
}
}
// Skip processing TEV stages that simply pass the previous stage results through
const auto tev_stages = regs.GetTevStages();
for (unsigned tev_stage_index = 0; tev_stage_index < tev_stages.size(); ++tev_stage_index) {
glUniform1i(uniform_tev_cfgs[tev_stage_index].enabled, !IsPassThroughTevStage(tev_stages[tev_stage_index]));
}
state.Apply();
}
void RasterizerOpenGL::ReloadColorBuffer() {
u8* color_buffer = Memory::GetPhysicalPointer(Pica::g_state.regs.framebuffer.GetColorBufferPhysicalAddress());
if (color_buffer == nullptr)
return;
u32 bytes_per_pixel = Pica::Regs::BytesPerColorPixel(fb_color_texture.format);
std::unique_ptr<u8[]> temp_fb_color_buffer(new u8[fb_color_texture.width * fb_color_texture.height * bytes_per_pixel]);
// Directly copy pixels. Internal OpenGL color formats are consistent so no conversion is necessary.
for (int y = 0; y < fb_color_texture.height; ++y) {
for (int x = 0; x < fb_color_texture.width; ++x) {
const u32 coarse_y = y & ~7;
u32 dst_offset = VideoCore::GetMortonOffset(x, y, bytes_per_pixel) + coarse_y * fb_color_texture.width * bytes_per_pixel;
u32 gl_px_idx = x * bytes_per_pixel + y * fb_color_texture.width * bytes_per_pixel;
u8* pixel = color_buffer + dst_offset;
memcpy(&temp_fb_color_buffer[gl_px_idx], pixel, bytes_per_pixel);
}
}
state.texture_units[0].enabled_2d = true;
state.texture_units[0].texture_2d = fb_color_texture.texture.handle;
state.Apply();
glActiveTexture(GL_TEXTURE0);
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, fb_color_texture.width, fb_color_texture.height,
fb_color_texture.gl_format, fb_color_texture.gl_type, temp_fb_color_buffer.get());
}
void RasterizerOpenGL::ReloadDepthBuffer() {
// TODO: Appears to work, but double-check endianness of depth values and order of depth-stencil
u8* depth_buffer = Memory::GetPhysicalPointer(Pica::g_state.regs.framebuffer.GetDepthBufferPhysicalAddress());
if (depth_buffer == nullptr) {
return;
}
u32 bytes_per_pixel = Pica::Regs::BytesPerDepthPixel(fb_depth_texture.format);
// OpenGL needs 4 bpp alignment for D24
u32 gl_bpp = bytes_per_pixel == 3 ? 4 : bytes_per_pixel;
std::unique_ptr<u8[]> temp_fb_depth_buffer(new u8[fb_depth_texture.width * fb_depth_texture.height * gl_bpp]);
for (int y = 0; y < fb_depth_texture.height; ++y) {
for (int x = 0; x < fb_depth_texture.width; ++x) {
const u32 coarse_y = y & ~7;
u32 dst_offset = VideoCore::GetMortonOffset(x, y, bytes_per_pixel) + coarse_y * fb_depth_texture.width * bytes_per_pixel;
u32 gl_px_idx = x + y * fb_depth_texture.width;
switch (fb_depth_texture.format) {
case Pica::Regs::DepthFormat::D16:
((u16*)temp_fb_depth_buffer.get())[gl_px_idx] = Color::DecodeD16(depth_buffer + dst_offset);
break;
case Pica::Regs::DepthFormat::D24:
((u32*)temp_fb_depth_buffer.get())[gl_px_idx] = Color::DecodeD24(depth_buffer + dst_offset);
break;
case Pica::Regs::DepthFormat::D24S8:
{
Math::Vec2<u32> depth_stencil = Color::DecodeD24S8(depth_buffer + dst_offset);
((u32*)temp_fb_depth_buffer.get())[gl_px_idx] = (depth_stencil.x << 8) | depth_stencil.y;
break;
}
default:
LOG_CRITICAL(Render_OpenGL, "Unknown memory framebuffer depth format %x", fb_depth_texture.format);
UNIMPLEMENTED();
break;
}
}
}
state.texture_units[0].enabled_2d = true;
state.texture_units[0].texture_2d = fb_depth_texture.texture.handle;
state.Apply();
glActiveTexture(GL_TEXTURE0);
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, fb_depth_texture.width, fb_depth_texture.height,
fb_depth_texture.gl_format, fb_depth_texture.gl_type, temp_fb_depth_buffer.get());
}
void RasterizerOpenGL::CommitColorBuffer() {
if (last_fb_color_addr != 0) {
u8* color_buffer = Memory::GetPhysicalPointer(last_fb_color_addr);
if (color_buffer != nullptr) {
u32 bytes_per_pixel = Pica::Regs::BytesPerColorPixel(fb_color_texture.format);
std::unique_ptr<u8[]> temp_gl_color_buffer(new u8[fb_color_texture.width * fb_color_texture.height * bytes_per_pixel]);
state.texture_units[0].enabled_2d = true;
state.texture_units[0].texture_2d = fb_color_texture.texture.handle;
state.Apply();
glActiveTexture(GL_TEXTURE0);
glGetTexImage(GL_TEXTURE_2D, 0, fb_color_texture.gl_format, fb_color_texture.gl_type, temp_gl_color_buffer.get());
// Directly copy pixels. Internal OpenGL color formats are consistent so no conversion is necessary.
for (int y = 0; y < fb_color_texture.height; ++y) {
for (int x = 0; x < fb_color_texture.width; ++x) {
const u32 coarse_y = y & ~7;
u32 dst_offset = VideoCore::GetMortonOffset(x, y, bytes_per_pixel) + coarse_y * fb_color_texture.width * bytes_per_pixel;
u32 gl_px_idx = x * bytes_per_pixel + y * fb_color_texture.width * bytes_per_pixel;
u8* pixel = color_buffer + dst_offset;
memcpy(pixel, &temp_gl_color_buffer[gl_px_idx], bytes_per_pixel);
}
}
}
}
}
void RasterizerOpenGL::CommitDepthBuffer() {
if (last_fb_depth_addr != 0) {
// TODO: Output seems correct visually, but doesn't quite match sw renderer output. One of them is wrong.
u8* depth_buffer = Memory::GetPhysicalPointer(last_fb_depth_addr);
if (depth_buffer != nullptr) {
u32 bytes_per_pixel = Pica::Regs::BytesPerDepthPixel(fb_depth_texture.format);
// OpenGL needs 4 bpp alignment for D24
u32 gl_bpp = bytes_per_pixel == 3 ? 4 : bytes_per_pixel;
std::unique_ptr<u8[]> temp_gl_depth_buffer(new u8[fb_depth_texture.width * fb_depth_texture.height * gl_bpp]);
state.texture_units[0].enabled_2d = true;
state.texture_units[0].texture_2d = fb_depth_texture.texture.handle;
state.Apply();
glActiveTexture(GL_TEXTURE0);
glGetTexImage(GL_TEXTURE_2D, 0, fb_depth_texture.gl_format, fb_depth_texture.gl_type, temp_gl_depth_buffer.get());
for (int y = 0; y < fb_depth_texture.height; ++y) {
for (int x = 0; x < fb_depth_texture.width; ++x) {
const u32 coarse_y = y & ~7;
u32 dst_offset = VideoCore::GetMortonOffset(x, y, bytes_per_pixel) + coarse_y * fb_depth_texture.width * bytes_per_pixel;
u32 gl_px_idx = x + y * fb_depth_texture.width;
switch (fb_depth_texture.format) {
case Pica::Regs::DepthFormat::D16:
Color::EncodeD16(((u16*)temp_gl_depth_buffer.get())[gl_px_idx], depth_buffer + dst_offset);
break;
case Pica::Regs::DepthFormat::D24:
Color::EncodeD24(((u32*)temp_gl_depth_buffer.get())[gl_px_idx], depth_buffer + dst_offset);
break;
case Pica::Regs::DepthFormat::D24S8:
{
u32 depth_stencil = ((u32*)temp_gl_depth_buffer.get())[gl_px_idx];
Color::EncodeD24S8((depth_stencil >> 8), depth_stencil & 0xFF, depth_buffer + dst_offset);
break;
}
default:
LOG_CRITICAL(Render_OpenGL, "Unknown framebuffer depth format %x", fb_depth_texture.format);
UNIMPLEMENTED();
break;
}
}
}
}
}
}
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