444 lines
14 KiB
C++
444 lines
14 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 "common/common_types.h"
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#include "video_core/renderer_opengl/gl_state.h"
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#include "video_core/renderer_opengl/gl_vars.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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stencil.test_func = GL_ALWAYS;
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stencil.test_ref = 0;
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stencil.test_mask = 0xFF;
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stencil.write_mask = 0xFF;
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stencil.action_depth_fail = GL_KEEP;
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stencil.action_depth_pass = GL_KEEP;
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stencil.action_stencil_fail = GL_KEEP;
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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 = GL_COPY;
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for (auto& texture_unit : texture_units) {
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texture_unit.texture_2d = 0;
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texture_unit.target = GL_TEXTURE_2D;
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texture_unit.sampler = 0;
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}
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color_buffer.texture_2d = 0;
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texture_buffer_lut_lf.texture_buffer = 0;
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texture_buffer_lut_rg.texture_buffer = 0;
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texture_buffer_lut_rgba.texture_buffer = 0;
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image_shadow_buffer = 0;
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image_shadow_texture_px = 0;
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image_shadow_texture_nx = 0;
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image_shadow_texture_py = 0;
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image_shadow_texture_ny = 0;
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image_shadow_texture_pz = 0;
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image_shadow_texture_nz = 0;
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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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renderbuffer = 0;
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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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if (stencil.test_func != cur_state.stencil.test_func ||
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stencil.test_ref != cur_state.stencil.test_ref ||
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stencil.test_mask != cur_state.stencil.test_mask) {
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glStencilFunc(stencil.test_func, stencil.test_ref, stencil.test_mask);
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}
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if (stencil.action_depth_fail != cur_state.stencil.action_depth_fail ||
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stencil.action_depth_pass != cur_state.stencil.action_depth_pass ||
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stencil.action_stencil_fail != cur_state.stencil.action_stencil_fail) {
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glStencilOp(stencil.action_stencil_fail, stencil.action_depth_fail,
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stencil.action_depth_pass);
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}
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// Stencil mask
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if (stencil.write_mask != cur_state.stencil.write_mask) {
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glStencilMask(stencil.write_mask);
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}
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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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glEnable(GL_BLEND);
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} else {
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glDisable(GL_BLEND);
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}
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// GLES does not support glLogicOp
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if (!GLES) {
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if (blend.enabled) {
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glDisable(GL_COLOR_LOGIC_OP);
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} else {
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glEnable(GL_COLOR_LOGIC_OP);
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}
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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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// GLES does not support glLogicOp
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if (!GLES) {
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if (logic_op != cur_state.logic_op) {
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glLogicOp(logic_op);
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}
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}
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// Textures
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for (u32 i = 0; i < texture_units.size(); ++i) {
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if (texture_units[i].texture_2d != cur_state.texture_units[i].texture_2d) {
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glActiveTexture(TextureUnits::PicaTexture(i).Enum());
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glBindTexture(texture_units[i].target, texture_units[i].texture_2d);
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}
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if (texture_units[i].sampler != cur_state.texture_units[i].sampler) {
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glBindSampler(i, texture_units[i].sampler);
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}
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}
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// Texture buffer LUTs
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if (texture_buffer_lut_lf.texture_buffer != cur_state.texture_buffer_lut_lf.texture_buffer) {
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glActiveTexture(TextureUnits::TextureBufferLUT_LF.Enum());
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glBindTexture(GL_TEXTURE_BUFFER, texture_buffer_lut_lf.texture_buffer);
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}
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// Texture buffer LUTs
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if (texture_buffer_lut_rg.texture_buffer != cur_state.texture_buffer_lut_rg.texture_buffer) {
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glActiveTexture(TextureUnits::TextureBufferLUT_RG.Enum());
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glBindTexture(GL_TEXTURE_BUFFER, texture_buffer_lut_rg.texture_buffer);
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}
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// Texture buffer LUTs
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if (texture_buffer_lut_rgba.texture_buffer !=
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cur_state.texture_buffer_lut_rgba.texture_buffer) {
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glActiveTexture(TextureUnits::TextureBufferLUT_RGBA.Enum());
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glBindTexture(GL_TEXTURE_BUFFER, texture_buffer_lut_rgba.texture_buffer);
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}
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// Color buffer
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if (color_buffer.texture_2d != cur_state.color_buffer.texture_2d) {
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glActiveTexture(TextureUnits::TextureColorBuffer.Enum());
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glBindTexture(GL_TEXTURE_2D, color_buffer.texture_2d);
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}
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// Shadow Images
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if (image_shadow_buffer != cur_state.image_shadow_buffer) {
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glBindImageTexture(ImageUnits::ShadowBuffer, image_shadow_buffer, 0, GL_FALSE, 0,
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GL_READ_WRITE, GL_R32UI);
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}
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if (image_shadow_texture_px != cur_state.image_shadow_texture_px) {
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glBindImageTexture(ImageUnits::ShadowTexturePX, image_shadow_texture_px, 0, GL_FALSE, 0,
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GL_READ_ONLY, GL_R32UI);
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}
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if (image_shadow_texture_nx != cur_state.image_shadow_texture_nx) {
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glBindImageTexture(ImageUnits::ShadowTextureNX, image_shadow_texture_nx, 0, GL_FALSE, 0,
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GL_READ_ONLY, GL_R32UI);
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}
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if (image_shadow_texture_py != cur_state.image_shadow_texture_py) {
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glBindImageTexture(ImageUnits::ShadowTexturePY, image_shadow_texture_py, 0, GL_FALSE, 0,
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GL_READ_ONLY, GL_R32UI);
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}
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if (image_shadow_texture_ny != cur_state.image_shadow_texture_ny) {
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glBindImageTexture(ImageUnits::ShadowTextureNY, image_shadow_texture_ny, 0, GL_FALSE, 0,
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GL_READ_ONLY, GL_R32UI);
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}
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if (image_shadow_texture_pz != cur_state.image_shadow_texture_pz) {
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glBindImageTexture(ImageUnits::ShadowTexturePZ, image_shadow_texture_pz, 0, GL_FALSE, 0,
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GL_READ_ONLY, GL_R32UI);
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}
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if (image_shadow_texture_nz != cur_state.image_shadow_texture_nz) {
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glBindImageTexture(ImageUnits::ShadowTextureNZ, image_shadow_texture_nz, 0, GL_FALSE, 0,
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GL_READ_ONLY, GL_R32UI);
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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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if (!GLES || GLAD_GL_EXT_clip_cull_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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}
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if (renderbuffer != cur_state.renderbuffer) {
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glBindRenderbuffer(GL_RENDERBUFFER, renderbuffer);
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}
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cur_state = *this;
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}
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OpenGLState& OpenGLState::ResetTexture(GLuint handle) {
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for (auto& unit : texture_units) {
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if (unit.texture_2d == handle) {
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unit.texture_2d = 0;
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}
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}
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if (texture_buffer_lut_lf.texture_buffer == handle)
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texture_buffer_lut_lf.texture_buffer = 0;
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if (texture_buffer_lut_rg.texture_buffer == handle)
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texture_buffer_lut_rg.texture_buffer = 0;
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if (texture_buffer_lut_rgba.texture_buffer == handle)
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texture_buffer_lut_rgba.texture_buffer = 0;
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if (image_shadow_buffer == handle)
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image_shadow_buffer = 0;
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if (image_shadow_texture_px == handle)
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image_shadow_texture_px = 0;
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if (image_shadow_texture_nx == handle)
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image_shadow_texture_nx = 0;
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if (image_shadow_texture_py == handle)
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image_shadow_texture_py = 0;
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if (image_shadow_texture_ny == handle)
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image_shadow_texture_ny = 0;
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if (image_shadow_texture_pz == handle)
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image_shadow_texture_pz = 0;
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if (image_shadow_texture_nz == handle)
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image_shadow_texture_nz = 0;
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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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OpenGLState& OpenGLState::ResetRenderbuffer(GLuint handle) {
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if (renderbuffer == handle) {
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renderbuffer = 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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