90746c33c7
This isn't used anywhere within the header, so we can remove it, along with the include that was previously necessary. This also uncovers an indirect include in the cpp file for the assertion macros.
348 lines
11 KiB
C++
348 lines
11 KiB
C++
// Copyright 2015 Citra Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#include <iterator>
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#include <glad/glad.h>
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#include "common/assert.h"
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#include "common/logging/log.h"
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#include "video_core/renderer_opengl/gl_state.h"
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namespace OpenGL {
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OpenGLState OpenGLState::cur_state;
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OpenGLState::OpenGLState() {
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// These all match default OpenGL values
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cull.enabled = false;
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cull.mode = GL_BACK;
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cull.front_face = GL_CCW;
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depth.test_enabled = false;
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depth.test_func = GL_LESS;
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depth.write_mask = GL_TRUE;
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color_mask.red_enabled = GL_TRUE;
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color_mask.green_enabled = GL_TRUE;
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color_mask.blue_enabled = GL_TRUE;
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color_mask.alpha_enabled = GL_TRUE;
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stencil.test_enabled = false;
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auto reset_stencil = [](auto& config) {
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config.test_func = GL_ALWAYS;
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config.test_ref = 0;
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config.test_mask = 0xFFFFFFFF;
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config.write_mask = 0xFFFFFFFF;
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config.action_depth_fail = GL_KEEP;
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config.action_depth_pass = GL_KEEP;
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config.action_stencil_fail = GL_KEEP;
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};
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reset_stencil(stencil.front);
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reset_stencil(stencil.back);
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blend.enabled = true;
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blend.rgb_equation = GL_FUNC_ADD;
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blend.a_equation = GL_FUNC_ADD;
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blend.src_rgb_func = GL_ONE;
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blend.dst_rgb_func = GL_ZERO;
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blend.src_a_func = GL_ONE;
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blend.dst_a_func = GL_ZERO;
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blend.color.red = 0.0f;
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blend.color.green = 0.0f;
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blend.color.blue = 0.0f;
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blend.color.alpha = 0.0f;
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logic_op.enabled = false;
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logic_op.operation = GL_COPY;
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for (auto& texture_unit : texture_units) {
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texture_unit.Reset();
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}
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draw.read_framebuffer = 0;
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draw.draw_framebuffer = 0;
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draw.vertex_array = 0;
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draw.vertex_buffer = 0;
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draw.uniform_buffer = 0;
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draw.shader_program = 0;
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draw.program_pipeline = 0;
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scissor.enabled = false;
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scissor.x = 0;
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scissor.y = 0;
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scissor.width = 0;
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scissor.height = 0;
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viewport.x = 0;
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viewport.y = 0;
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viewport.width = 0;
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viewport.height = 0;
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clip_distance = {};
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}
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void OpenGLState::Apply() const {
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// Culling
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if (cull.enabled != cur_state.cull.enabled) {
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if (cull.enabled) {
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glEnable(GL_CULL_FACE);
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} else {
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glDisable(GL_CULL_FACE);
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}
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}
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if (cull.mode != cur_state.cull.mode) {
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glCullFace(cull.mode);
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}
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if (cull.front_face != cur_state.cull.front_face) {
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glFrontFace(cull.front_face);
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}
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// Depth test
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if (depth.test_enabled != cur_state.depth.test_enabled) {
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if (depth.test_enabled) {
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glEnable(GL_DEPTH_TEST);
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} else {
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glDisable(GL_DEPTH_TEST);
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}
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}
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if (depth.test_func != cur_state.depth.test_func) {
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glDepthFunc(depth.test_func);
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}
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// Depth mask
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if (depth.write_mask != cur_state.depth.write_mask) {
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glDepthMask(depth.write_mask);
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}
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// Color mask
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if (color_mask.red_enabled != cur_state.color_mask.red_enabled ||
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color_mask.green_enabled != cur_state.color_mask.green_enabled ||
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color_mask.blue_enabled != cur_state.color_mask.blue_enabled ||
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color_mask.alpha_enabled != cur_state.color_mask.alpha_enabled) {
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glColorMask(color_mask.red_enabled, color_mask.green_enabled, color_mask.blue_enabled,
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color_mask.alpha_enabled);
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}
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// Stencil test
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if (stencil.test_enabled != cur_state.stencil.test_enabled) {
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if (stencil.test_enabled) {
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glEnable(GL_STENCIL_TEST);
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} else {
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glDisable(GL_STENCIL_TEST);
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}
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}
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auto config_stencil = [](GLenum face, const auto& config, const auto& prev_config) {
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if (config.test_func != prev_config.test_func || config.test_ref != prev_config.test_ref ||
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config.test_mask != prev_config.test_mask) {
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glStencilFuncSeparate(face, config.test_func, config.test_ref, config.test_mask);
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}
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if (config.action_depth_fail != prev_config.action_depth_fail ||
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config.action_depth_pass != prev_config.action_depth_pass ||
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config.action_stencil_fail != prev_config.action_stencil_fail) {
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glStencilOpSeparate(face, config.action_stencil_fail, config.action_depth_fail,
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config.action_depth_pass);
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}
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if (config.write_mask != prev_config.write_mask) {
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glStencilMaskSeparate(face, config.write_mask);
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}
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};
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config_stencil(GL_FRONT, stencil.front, cur_state.stencil.front);
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config_stencil(GL_BACK, stencil.back, cur_state.stencil.back);
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// Blending
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if (blend.enabled != cur_state.blend.enabled) {
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if (blend.enabled) {
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ASSERT(!logic_op.enabled);
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glEnable(GL_BLEND);
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} else {
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glDisable(GL_BLEND);
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}
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}
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if (blend.color.red != cur_state.blend.color.red ||
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blend.color.green != cur_state.blend.color.green ||
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blend.color.blue != cur_state.blend.color.blue ||
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blend.color.alpha != cur_state.blend.color.alpha) {
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glBlendColor(blend.color.red, blend.color.green, blend.color.blue, blend.color.alpha);
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}
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if (blend.src_rgb_func != cur_state.blend.src_rgb_func ||
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blend.dst_rgb_func != cur_state.blend.dst_rgb_func ||
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blend.src_a_func != cur_state.blend.src_a_func ||
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blend.dst_a_func != cur_state.blend.dst_a_func) {
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glBlendFuncSeparate(blend.src_rgb_func, blend.dst_rgb_func, blend.src_a_func,
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blend.dst_a_func);
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}
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if (blend.rgb_equation != cur_state.blend.rgb_equation ||
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blend.a_equation != cur_state.blend.a_equation) {
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glBlendEquationSeparate(blend.rgb_equation, blend.a_equation);
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}
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// Logic Operation
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if (logic_op.enabled != cur_state.logic_op.enabled) {
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if (logic_op.enabled) {
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ASSERT(!blend.enabled);
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glEnable(GL_COLOR_LOGIC_OP);
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} else {
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glDisable(GL_COLOR_LOGIC_OP);
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}
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}
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if (logic_op.operation != cur_state.logic_op.operation) {
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glLogicOp(logic_op.operation);
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}
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// Textures
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for (std::size_t i = 0; i < std::size(texture_units); ++i) {
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const auto& texture_unit = texture_units[i];
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const auto& cur_state_texture_unit = cur_state.texture_units[i];
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if (texture_unit.texture != cur_state_texture_unit.texture) {
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glActiveTexture(TextureUnits::MaxwellTexture(static_cast<int>(i)).Enum());
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glBindTexture(texture_unit.target, texture_unit.texture);
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}
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if (texture_unit.sampler != cur_state_texture_unit.sampler) {
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glBindSampler(static_cast<GLuint>(i), texture_unit.sampler);
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}
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// Update the texture swizzle
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if (texture_unit.swizzle.r != cur_state_texture_unit.swizzle.r ||
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texture_unit.swizzle.g != cur_state_texture_unit.swizzle.g ||
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texture_unit.swizzle.b != cur_state_texture_unit.swizzle.b ||
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texture_unit.swizzle.a != cur_state_texture_unit.swizzle.a) {
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std::array<GLint, 4> mask = {texture_unit.swizzle.r, texture_unit.swizzle.g,
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texture_unit.swizzle.b, texture_unit.swizzle.a};
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glTexParameteriv(texture_unit.target, GL_TEXTURE_SWIZZLE_RGBA, mask.data());
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}
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}
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// Framebuffer
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if (draw.read_framebuffer != cur_state.draw.read_framebuffer) {
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glBindFramebuffer(GL_READ_FRAMEBUFFER, draw.read_framebuffer);
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}
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if (draw.draw_framebuffer != cur_state.draw.draw_framebuffer) {
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glBindFramebuffer(GL_DRAW_FRAMEBUFFER, draw.draw_framebuffer);
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}
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// Vertex array
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if (draw.vertex_array != cur_state.draw.vertex_array) {
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glBindVertexArray(draw.vertex_array);
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}
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// Vertex buffer
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if (draw.vertex_buffer != cur_state.draw.vertex_buffer) {
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glBindBuffer(GL_ARRAY_BUFFER, draw.vertex_buffer);
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}
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// Uniform buffer
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if (draw.uniform_buffer != cur_state.draw.uniform_buffer) {
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glBindBuffer(GL_UNIFORM_BUFFER, draw.uniform_buffer);
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}
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// Shader program
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if (draw.shader_program != cur_state.draw.shader_program) {
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glUseProgram(draw.shader_program);
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}
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// Program pipeline
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if (draw.program_pipeline != cur_state.draw.program_pipeline) {
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glBindProgramPipeline(draw.program_pipeline);
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}
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// Scissor test
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if (scissor.enabled != cur_state.scissor.enabled) {
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if (scissor.enabled) {
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glEnable(GL_SCISSOR_TEST);
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} else {
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glDisable(GL_SCISSOR_TEST);
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}
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}
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if (scissor.x != cur_state.scissor.x || scissor.y != cur_state.scissor.y ||
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scissor.width != cur_state.scissor.width || scissor.height != cur_state.scissor.height) {
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glScissor(scissor.x, scissor.y, scissor.width, scissor.height);
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}
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if (viewport.x != cur_state.viewport.x || viewport.y != cur_state.viewport.y ||
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viewport.width != cur_state.viewport.width ||
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viewport.height != cur_state.viewport.height) {
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glViewport(viewport.x, viewport.y, viewport.width, viewport.height);
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}
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// Clip distance
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for (std::size_t i = 0; i < clip_distance.size(); ++i) {
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if (clip_distance[i] != cur_state.clip_distance[i]) {
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if (clip_distance[i]) {
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glEnable(GL_CLIP_DISTANCE0 + static_cast<GLenum>(i));
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} else {
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glDisable(GL_CLIP_DISTANCE0 + static_cast<GLenum>(i));
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}
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}
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}
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cur_state = *this;
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}
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OpenGLState& OpenGLState::UnbindTexture(GLuint handle) {
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for (auto& unit : texture_units) {
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if (unit.texture == handle) {
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unit.Unbind();
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}
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}
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return *this;
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}
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OpenGLState& OpenGLState::ResetSampler(GLuint handle) {
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for (auto& unit : texture_units) {
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if (unit.sampler == handle) {
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unit.sampler = 0;
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}
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}
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return *this;
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}
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OpenGLState& OpenGLState::ResetProgram(GLuint handle) {
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if (draw.shader_program == handle) {
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draw.shader_program = 0;
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}
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return *this;
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}
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OpenGLState& OpenGLState::ResetPipeline(GLuint handle) {
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if (draw.program_pipeline == handle) {
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draw.program_pipeline = 0;
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}
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return *this;
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}
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OpenGLState& OpenGLState::ResetBuffer(GLuint handle) {
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if (draw.vertex_buffer == handle) {
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draw.vertex_buffer = 0;
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}
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if (draw.uniform_buffer == handle) {
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draw.uniform_buffer = 0;
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}
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return *this;
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}
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OpenGLState& OpenGLState::ResetVertexArray(GLuint handle) {
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if (draw.vertex_array == handle) {
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draw.vertex_array = 0;
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}
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return *this;
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}
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OpenGLState& OpenGLState::ResetFramebuffer(GLuint handle) {
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if (draw.read_framebuffer == handle) {
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draw.read_framebuffer = 0;
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}
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if (draw.draw_framebuffer == handle) {
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draw.draw_framebuffer = 0;
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}
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return *this;
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}
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} // namespace OpenGL
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