987 lines
36 KiB
C++
987 lines
36 KiB
C++
#include "../../Window.h"
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#ifdef ENABLE_OPENGL
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#include <stdint.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <map>
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#include <unordered_map>
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#ifndef _LANGUAGE_C
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#define _LANGUAGE_C
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#endif
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#include "PR/ultra64/gbi.h"
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#ifdef __MINGW32__
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#define FOR_WINDOWS 1
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#else
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#define FOR_WINDOWS 0
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#endif
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#ifdef _MSC_VER
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#include <SDL2/SDL.h>
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//#define GL_GLEXT_PROTOTYPES 1
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#include <GL/glew.h>
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#elif FOR_WINDOWS
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#include <GL/glew.h>
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#include "SDL.h"
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#define GL_GLEXT_PROTOTYPES 1
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#include "SDL_opengl.h"
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#elif __APPLE__
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#include <SDL2/SDL.h>
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#include <GL/glew.h>
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#elif __SWITCH__
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#include <SDL2/SDL.h>
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#include <glad/glad.h>
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#else
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#include <SDL2/SDL.h>
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#include <GL/glew.h>
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#define GL_GLEXT_PROTOTYPES 1
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// #include <SDL2/SDL_opengles2.h>
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#endif
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#include "gfx_cc.h"
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#include "gfx_rendering_api.h"
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#include "../../ImGuiImpl.h"
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#include "../../Window.h"
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#include "gfx_pc.h"
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using namespace std;
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struct ShaderProgram {
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GLuint opengl_program_id;
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uint8_t num_inputs;
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bool used_textures[2];
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uint8_t num_floats;
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GLint attrib_locations[16];
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uint8_t attrib_sizes[16];
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uint8_t num_attribs;
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bool used_noise;
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GLint frame_count_location;
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GLint noise_scale_location;
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};
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struct Framebuffer {
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uint32_t width, height;
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bool has_depth_buffer;
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uint32_t msaa_level;
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bool invert_y;
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GLuint fbo, clrbuf, clrbuf_msaa, rbo;
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};
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static map<pair<uint64_t, uint32_t>, struct ShaderProgram> shader_program_pool;
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static GLuint opengl_vbo;
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#ifdef __APPLE__
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static GLuint opengl_vao;
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#endif
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static bool current_depth_mask;
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static uint32_t frame_count;
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static vector<Framebuffer> framebuffers;
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static size_t current_framebuffer;
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static float current_noise_scale;
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static FilteringMode current_filter_mode = FILTER_THREE_POINT;
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GLuint pixel_depth_rb, pixel_depth_fb;
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size_t pixel_depth_rb_size;
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static struct GfxClipParameters gfx_opengl_get_clip_parameters(void) {
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return { false, framebuffers[current_framebuffer].invert_y };
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}
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static void gfx_opengl_vertex_array_set_attribs(struct ShaderProgram *prg) {
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size_t num_floats = prg->num_floats;
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size_t pos = 0;
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for (int i = 0; i < prg->num_attribs; i++) {
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glEnableVertexAttribArray(prg->attrib_locations[i]);
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glVertexAttribPointer(prg->attrib_locations[i], prg->attrib_sizes[i], GL_FLOAT, GL_FALSE, num_floats * sizeof(float), (void *) (pos * sizeof(float)));
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pos += prg->attrib_sizes[i];
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}
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}
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static void gfx_opengl_set_uniforms(struct ShaderProgram *prg) {
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if (prg->used_noise) {
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glUniform1i(prg->frame_count_location, frame_count);
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glUniform1f(prg->noise_scale_location, current_noise_scale);
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}
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}
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static void gfx_opengl_unload_shader(struct ShaderProgram *old_prg) {
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if (old_prg != NULL) {
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for (int i = 0; i < old_prg->num_attribs; i++) {
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glDisableVertexAttribArray(old_prg->attrib_locations[i]);
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}
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}
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}
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static void gfx_opengl_load_shader(struct ShaderProgram *new_prg) {
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// if (!new_prg) return;
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glUseProgram(new_prg->opengl_program_id);
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gfx_opengl_vertex_array_set_attribs(new_prg);
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gfx_opengl_set_uniforms(new_prg);
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}
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static void append_str(char *buf, size_t *len, const char *str) {
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while (*str != '\0') buf[(*len)++] = *str++;
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}
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static void append_line(char *buf, size_t *len, const char *str) {
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while (*str != '\0') buf[(*len)++] = *str++;
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buf[(*len)++] = '\n';
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}
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static const char *shader_item_to_str(uint32_t item, bool with_alpha, bool only_alpha, bool inputs_have_alpha, bool hint_single_element) {
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if (!only_alpha) {
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switch (item) {
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case SHADER_0:
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return with_alpha ? "vec4(0.0, 0.0, 0.0, 0.0)" : "vec3(0.0, 0.0, 0.0)";
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case SHADER_1:
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return with_alpha ? "vec4(1.0, 1.0, 1.0, 1.0)" : "vec3(1.0, 1.0, 1.0)";
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case SHADER_INPUT_1:
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return with_alpha || !inputs_have_alpha ? "vInput1" : "vInput1.rgb";
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case SHADER_INPUT_2:
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return with_alpha || !inputs_have_alpha ? "vInput2" : "vInput2.rgb";
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case SHADER_INPUT_3:
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return with_alpha || !inputs_have_alpha ? "vInput3" : "vInput3.rgb";
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case SHADER_INPUT_4:
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return with_alpha || !inputs_have_alpha ? "vInput4" : "vInput4.rgb";
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case SHADER_TEXEL0:
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return with_alpha ? "texVal0" : "texVal0.rgb";
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case SHADER_TEXEL0A:
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return hint_single_element ? "texVal0.a" :
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(with_alpha ? "vec4(texVal0.a, texVal0.a, texVal0.a, texVal0.a)" : "vec3(texVal0.a, texVal0.a, texVal0.a)");
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case SHADER_TEXEL1A:
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return hint_single_element ? "texVal1.a" :
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(with_alpha ? "vec4(texVal1.a, texVal1.a, texVal1.a, texVal1.a)" : "vec3(texVal1.a, texVal1.a, texVal1.a)");
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case SHADER_TEXEL1:
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return with_alpha ? "texVal1" : "texVal1.rgb";
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case SHADER_COMBINED:
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return with_alpha ? "texel" : "texel.rgb";
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}
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} else {
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switch (item) {
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case SHADER_0:
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return "0.0";
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case SHADER_1:
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return "1.0";
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case SHADER_INPUT_1:
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return "vInput1.a";
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case SHADER_INPUT_2:
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return "vInput2.a";
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case SHADER_INPUT_3:
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return "vInput3.a";
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case SHADER_INPUT_4:
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return "vInput4.a";
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case SHADER_TEXEL0:
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return "texVal0.a";
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case SHADER_TEXEL0A:
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return "texVal0.a";
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case SHADER_TEXEL1A:
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return "texVal1.a";
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case SHADER_TEXEL1:
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return "texVal1.a";
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case SHADER_COMBINED:
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return "texel.a";
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}
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}
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return "";
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}
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static void append_formula(char *buf, size_t *len, uint8_t c[2][4], bool do_single, bool do_multiply, bool do_mix, bool with_alpha, bool only_alpha, bool opt_alpha) {
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if (do_single) {
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append_str(buf, len, shader_item_to_str(c[only_alpha][3], with_alpha, only_alpha, opt_alpha, false));
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} else if (do_multiply) {
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append_str(buf, len, shader_item_to_str(c[only_alpha][0], with_alpha, only_alpha, opt_alpha, false));
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append_str(buf, len, " * ");
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append_str(buf, len, shader_item_to_str(c[only_alpha][2], with_alpha, only_alpha, opt_alpha, true));
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} else if (do_mix) {
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append_str(buf, len, "mix(");
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append_str(buf, len, shader_item_to_str(c[only_alpha][1], with_alpha, only_alpha, opt_alpha, false));
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append_str(buf, len, ", ");
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append_str(buf, len, shader_item_to_str(c[only_alpha][0], with_alpha, only_alpha, opt_alpha, false));
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append_str(buf, len, ", ");
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append_str(buf, len, shader_item_to_str(c[only_alpha][2], with_alpha, only_alpha, opt_alpha, true));
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append_str(buf, len, ")");
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} else {
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append_str(buf, len, "(");
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append_str(buf, len, shader_item_to_str(c[only_alpha][0], with_alpha, only_alpha, opt_alpha, false));
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append_str(buf, len, " - ");
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append_str(buf, len, shader_item_to_str(c[only_alpha][1], with_alpha, only_alpha, opt_alpha, false));
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append_str(buf, len, ") * ");
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append_str(buf, len, shader_item_to_str(c[only_alpha][2], with_alpha, only_alpha, opt_alpha, true));
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append_str(buf, len, " + ");
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append_str(buf, len, shader_item_to_str(c[only_alpha][3], with_alpha, only_alpha, opt_alpha, false));
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}
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}
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static struct ShaderProgram* gfx_opengl_create_and_load_new_shader(uint64_t shader_id0, uint32_t shader_id1) {
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struct CCFeatures cc_features;
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gfx_cc_get_features(shader_id0, shader_id1, &cc_features);
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char vs_buf[1024];
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char fs_buf[3000];
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size_t vs_len = 0;
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size_t fs_len = 0;
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size_t num_floats = 4;
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// Vertex shader
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#ifdef __APPLE__
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append_line(vs_buf, &vs_len, "#version 410 core");
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append_line(vs_buf, &vs_len, "in vec4 aVtxPos;");
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#else
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append_line(vs_buf, &vs_len, "#version 110");
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append_line(vs_buf, &vs_len, "attribute vec4 aVtxPos;");
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#endif
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for (int i = 0; i < 2; i++) {
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if (cc_features.used_textures[i]) {
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#ifdef __APPLE__
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vs_len += sprintf(vs_buf + vs_len, "in vec2 aTexCoord%d;\n", i);
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vs_len += sprintf(vs_buf + vs_len, "out vec2 vTexCoord%d;\n", i);
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#else
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vs_len += sprintf(vs_buf + vs_len, "attribute vec2 aTexCoord%d;\n", i);
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vs_len += sprintf(vs_buf + vs_len, "varying vec2 vTexCoord%d;\n", i);
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#endif
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num_floats += 2;
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for (int j = 0; j < 2; j++) {
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if (cc_features.clamp[i][j]) {
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#ifdef __APPLE__
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vs_len += sprintf(vs_buf + vs_len, "in float aTexClamp%s%d;\n", j == 0 ? "S" : "T", i);
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vs_len += sprintf(vs_buf + vs_len, "out float vTexClamp%s%d;\n", j == 0 ? "S" : "T", i);
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#else
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vs_len += sprintf(vs_buf + vs_len, "attribute float aTexClamp%s%d;\n", j == 0 ? "S" : "T", i);
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vs_len += sprintf(vs_buf + vs_len, "varying float vTexClamp%s%d;\n", j == 0 ? "S" : "T", i);
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#endif
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num_floats += 1;
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}
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}
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}
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}
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if (cc_features.opt_fog) {
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#ifdef __APPLE__
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append_line(vs_buf, &vs_len, "in vec4 aFog;");
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append_line(vs_buf, &vs_len, "out vec4 vFog;");
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#else
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append_line(vs_buf, &vs_len, "attribute vec4 aFog;");
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append_line(vs_buf, &vs_len, "varying vec4 vFog;");
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#endif
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num_floats += 4;
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}
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if (cc_features.opt_grayscale) {
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#ifdef __APPLE__
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append_line(vs_buf, &vs_len, "in vec4 aGrayscaleColor;");
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append_line(vs_buf, &vs_len, "out vec4 vGrayscaleColor;");
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#else
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append_line(vs_buf, &vs_len, "attribute vec4 aGrayscaleColor;");
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append_line(vs_buf, &vs_len, "varying vec4 vGrayscaleColor;");
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#endif
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num_floats += 4;
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}
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for (int i = 0; i < cc_features.num_inputs; i++) {
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#ifdef __APPLE__
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vs_len += sprintf(vs_buf + vs_len, "in vec%d aInput%d;\n", cc_features.opt_alpha ? 4 : 3, i + 1);
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vs_len += sprintf(vs_buf + vs_len, "out vec%d vInput%d;\n", cc_features.opt_alpha ? 4 : 3, i + 1);
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#else
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vs_len += sprintf(vs_buf + vs_len, "attribute vec%d aInput%d;\n", cc_features.opt_alpha ? 4 : 3, i + 1);
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vs_len += sprintf(vs_buf + vs_len, "varying vec%d vInput%d;\n", cc_features.opt_alpha ? 4 : 3, i + 1);
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#endif
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num_floats += cc_features.opt_alpha ? 4 : 3;
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}
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append_line(vs_buf, &vs_len, "void main() {");
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for (int i = 0; i < 2; i++) {
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if (cc_features.used_textures[i]) {
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vs_len += sprintf(vs_buf + vs_len, "vTexCoord%d = aTexCoord%d;\n", i, i);
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for (int j = 0; j < 2; j++) {
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if (cc_features.clamp[i][j]) {
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vs_len += sprintf(vs_buf + vs_len, "vTexClamp%s%d = aTexClamp%s%d;\n", j == 0 ? "S" : "T", i, j == 0 ? "S" : "T", i);
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}
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}
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}
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}
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if (cc_features.opt_fog) {
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append_line(vs_buf, &vs_len, "vFog = aFog;");
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}
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if (cc_features.opt_grayscale) {
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append_line(vs_buf, &vs_len, "vGrayscaleColor = aGrayscaleColor;");
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}
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for (int i = 0; i < cc_features.num_inputs; i++) {
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vs_len += sprintf(vs_buf + vs_len, "vInput%d = aInput%d;\n", i + 1, i + 1);
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}
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append_line(vs_buf, &vs_len, "gl_Position = aVtxPos;");
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append_line(vs_buf, &vs_len, "}");
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// Fragment shader
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#ifdef __APPLE__
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append_line(fs_buf, &fs_len, "#version 410 core");
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#else
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append_line(fs_buf, &fs_len, "#version 130");
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#endif
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//append_line(fs_buf, &fs_len, "precision mediump float;");
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for (int i = 0; i < 2; i++) {
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if (cc_features.used_textures[i]) {
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#ifdef __APPLE__
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fs_len += sprintf(fs_buf + fs_len, "in vec2 vTexCoord%d;\n", i);
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#else
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fs_len += sprintf(fs_buf + fs_len, "varying vec2 vTexCoord%d;\n", i);
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#endif
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for (int j = 0; j < 2; j++) {
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if (cc_features.clamp[i][j]) {
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#ifdef __APPLE__
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fs_len += sprintf(fs_buf + fs_len, "in float vTexClamp%s%d;\n", j == 0 ? "S" : "T", i);
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#else
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fs_len += sprintf(fs_buf + fs_len, "varying float vTexClamp%s%d;\n", j == 0 ? "S" : "T", i);
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#endif
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}
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}
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}
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}
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if (cc_features.opt_fog) {
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#ifdef __APPLE__
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append_line(fs_buf, &fs_len, "in vec4 vFog;");
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#else
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append_line(fs_buf, &fs_len, "varying vec4 vFog;");
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#endif
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}
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if (cc_features.opt_grayscale) {
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#ifdef __APPLE__
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append_line(fs_buf, &fs_len, "in vec4 vGrayscaleColor;");
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#else
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append_line(fs_buf, &fs_len, "varying vec4 vGrayscaleColor;");
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#endif
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}
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for (int i = 0; i < cc_features.num_inputs; i++) {
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#ifdef __APPLE__
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fs_len += sprintf(fs_buf + fs_len, "in vec%d vInput%d;\n", cc_features.opt_alpha ? 4 : 3, i + 1);
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#else
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fs_len += sprintf(fs_buf + fs_len, "varying vec%d vInput%d;\n", cc_features.opt_alpha ? 4 : 3, i + 1);
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#endif
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}
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if (cc_features.used_textures[0]) {
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append_line(fs_buf, &fs_len, "uniform sampler2D uTex0;");
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}
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if (cc_features.used_textures[1]) {
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append_line(fs_buf, &fs_len, "uniform sampler2D uTex1;");
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}
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if (cc_features.opt_alpha && cc_features.opt_noise) {
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append_line(fs_buf, &fs_len, "uniform int frame_count;");
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append_line(fs_buf, &fs_len, "uniform float noise_scale;");
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append_line(fs_buf, &fs_len, "float random(in vec3 value) {");
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append_line(fs_buf, &fs_len, " float random = dot(sin(value), vec3(12.9898, 78.233, 37.719));");
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append_line(fs_buf, &fs_len, " return fract(sin(random) * 143758.5453);");
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append_line(fs_buf, &fs_len, "}");
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}
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if (current_filter_mode == FILTER_THREE_POINT) {
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#if __APPLE__
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append_line(fs_buf, &fs_len, "#define TEX_OFFSET(off) texture(tex, texCoord - (off)/texSize)");
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#else
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append_line(fs_buf, &fs_len, "#define TEX_OFFSET(off) texture2D(tex, texCoord - (off)/texSize)");
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#endif
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append_line(fs_buf, &fs_len, "vec4 filter3point(in sampler2D tex, in vec2 texCoord, in vec2 texSize) {");
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append_line(fs_buf, &fs_len, " vec2 offset = fract(texCoord*texSize - vec2(0.5));");
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append_line(fs_buf, &fs_len, " offset -= step(1.0, offset.x + offset.y);");
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append_line(fs_buf, &fs_len, " vec4 c0 = TEX_OFFSET(offset);");
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append_line(fs_buf, &fs_len, " vec4 c1 = TEX_OFFSET(vec2(offset.x - sign(offset.x), offset.y));");
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append_line(fs_buf, &fs_len, " vec4 c2 = TEX_OFFSET(vec2(offset.x, offset.y - sign(offset.y)));");
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append_line(fs_buf, &fs_len, " return c0 + abs(offset.x)*(c1-c0) + abs(offset.y)*(c2-c0);");
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append_line(fs_buf, &fs_len, "}");
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append_line(fs_buf, &fs_len, "vec4 hookTexture2D(in sampler2D tex, in vec2 uv, in vec2 texSize) {");
|
|
append_line(fs_buf, &fs_len, " return filter3point(tex, uv, texSize);");
|
|
append_line(fs_buf, &fs_len, "}");
|
|
} else {
|
|
append_line(fs_buf, &fs_len, "vec4 hookTexture2D(in sampler2D tex, in vec2 uv, in vec2 texSize) {");
|
|
#if __APPLE__
|
|
append_line(fs_buf, &fs_len, " return texture(tex, uv);");
|
|
#else
|
|
append_line(fs_buf, &fs_len, " return texture2D(tex, uv);");
|
|
#endif
|
|
append_line(fs_buf, &fs_len, "}");
|
|
}
|
|
|
|
#if __APPLE__
|
|
append_line(fs_buf, &fs_len, "out vec4 outColor;");
|
|
#endif
|
|
|
|
append_line(fs_buf, &fs_len, "void main() {");
|
|
|
|
for (int i = 0; i < 2; i++) {
|
|
if (cc_features.used_textures[i]) {
|
|
bool s = cc_features.clamp[i][0], t = cc_features.clamp[i][1];
|
|
|
|
fs_len += sprintf(fs_buf + fs_len, "vec2 texSize%d = textureSize(uTex%d, 0);\n", i, i);
|
|
|
|
if (!s && !t) {
|
|
fs_len += sprintf(fs_buf + fs_len, "vec4 texVal%d = hookTexture2D(uTex%d, vTexCoord%d, texSize%d);\n", i, i, i, i);
|
|
} else {
|
|
if (s && t) {
|
|
fs_len += sprintf(fs_buf + fs_len, "vec4 texVal%d = hookTexture2D(uTex%d, clamp(vTexCoord%d, 0.5 / texSize%d, vec2(vTexClampS%d, vTexClampT%d)), texSize%d);\n", i, i, i, i, i, i, i);
|
|
} else if (s) {
|
|
fs_len += sprintf(fs_buf + fs_len, "vec4 texVal%d = hookTexture2D(uTex%d, vec2(clamp(vTexCoord%d.s, 0.5 / texSize%d.s, vTexClampS%d), vTexCoord%d.t), texSize%d);\n", i, i, i, i, i, i, i);
|
|
} else {
|
|
fs_len += sprintf(fs_buf + fs_len, "vec4 texVal%d = hookTexture2D(uTex%d, vec2(vTexCoord%d.s, clamp(vTexCoord%d.t, 0.5 / texSize%d.t, vTexClampT%d)), texSize%d);\n", i, i, i, i, i, i, i);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
append_line(fs_buf, &fs_len, cc_features.opt_alpha ? "vec4 texel;" : "vec3 texel;");
|
|
for (int c = 0; c < (cc_features.opt_2cyc ? 2 : 1); c++) {
|
|
append_str(fs_buf, &fs_len, "texel = ");
|
|
if (!cc_features.color_alpha_same[c] && cc_features.opt_alpha) {
|
|
append_str(fs_buf, &fs_len, "vec4(");
|
|
append_formula(fs_buf, &fs_len, cc_features.c[c], cc_features.do_single[c][0], cc_features.do_multiply[c][0], cc_features.do_mix[c][0], false, false, true);
|
|
append_str(fs_buf, &fs_len, ", ");
|
|
append_formula(fs_buf, &fs_len, cc_features.c[c], cc_features.do_single[c][1], cc_features.do_multiply[c][1], cc_features.do_mix[c][1], true, true, true);
|
|
append_str(fs_buf, &fs_len, ")");
|
|
}
|
|
else {
|
|
append_formula(fs_buf, &fs_len, cc_features.c[c], cc_features.do_single[c][0], cc_features.do_multiply[c][0], cc_features.do_mix[c][0], cc_features.opt_alpha, false, cc_features.opt_alpha);
|
|
}
|
|
append_line(fs_buf, &fs_len, ";");
|
|
}
|
|
// TODO discard if alpha is 0?
|
|
if (cc_features.opt_fog)
|
|
{
|
|
if (cc_features.opt_alpha)
|
|
{
|
|
append_line(fs_buf, &fs_len, "texel = vec4(mix(texel.rgb, vFog.rgb, vFog.a), texel.a);");
|
|
}
|
|
else
|
|
{
|
|
append_line(fs_buf, &fs_len, "texel = mix(texel, vFog.rgb, vFog.a);");
|
|
}
|
|
}
|
|
|
|
if (cc_features.opt_texture_edge && cc_features.opt_alpha) {
|
|
append_line(fs_buf, &fs_len, "if (texel.a > 0.19) texel.a = 1.0; else discard;");
|
|
}
|
|
|
|
if (cc_features.opt_alpha && cc_features.opt_noise) {
|
|
append_line(fs_buf, &fs_len, "texel.a *= floor(clamp(random(vec3(floor(gl_FragCoord.xy * noise_scale), float(frame_count))) + texel.a, 0.0, 1.0));");
|
|
}
|
|
|
|
if (cc_features.opt_grayscale) {
|
|
append_line(fs_buf, &fs_len, "float intensity = (texel.r + texel.g + texel.b) / 3.0;");
|
|
append_line(fs_buf, &fs_len, "vec3 new_texel = vGrayscaleColor.rgb * intensity;");
|
|
append_line(fs_buf, &fs_len, "texel.rgb = mix(texel.rgb, new_texel, vGrayscaleColor.a);");
|
|
}
|
|
|
|
if (cc_features.opt_alpha) {
|
|
if (cc_features.opt_alpha_threshold) {
|
|
append_line(fs_buf, &fs_len, "if (texel.a < 8.0 / 256.0) discard;");
|
|
}
|
|
if (cc_features.opt_invisible) {
|
|
append_line(fs_buf, &fs_len, "texel.a = 0.0;");
|
|
}
|
|
#if __APPLE__
|
|
append_line(fs_buf, &fs_len, "outColor = texel;");
|
|
#else
|
|
append_line(fs_buf, &fs_len, "gl_FragColor = texel;");
|
|
#endif
|
|
} else {
|
|
#if __APPLE__
|
|
append_line(fs_buf, &fs_len, "outColor = vec4(texel, 1.0);");
|
|
#else
|
|
append_line(fs_buf, &fs_len, "gl_FragColor = vec4(texel, 1.0);");
|
|
#endif
|
|
}
|
|
append_line(fs_buf, &fs_len, "}");
|
|
|
|
vs_buf[vs_len] = '\0';
|
|
fs_buf[fs_len] = '\0';
|
|
|
|
/*puts("Vertex shader:");
|
|
puts(vs_buf);
|
|
puts("Fragment shader:");
|
|
puts(fs_buf);
|
|
puts("End");*/
|
|
|
|
const GLchar *sources[2] = { vs_buf, fs_buf };
|
|
const GLint lengths[2] = { (GLint) vs_len, (GLint) fs_len };
|
|
GLint success;
|
|
|
|
GLuint vertex_shader = glCreateShader(GL_VERTEX_SHADER);
|
|
glShaderSource(vertex_shader, 1, &sources[0], &lengths[0]);
|
|
glCompileShader(vertex_shader);
|
|
glGetShaderiv(vertex_shader, GL_COMPILE_STATUS, &success);
|
|
if (!success) {
|
|
GLint max_length = 0;
|
|
glGetShaderiv(vertex_shader, GL_INFO_LOG_LENGTH, &max_length);
|
|
char error_log[1024];
|
|
//fprintf(stderr, "Vertex shader compilation failed\n");
|
|
glGetShaderInfoLog(vertex_shader, max_length, &max_length, &error_log[0]);
|
|
//fprintf(stderr, "%s\n", &error_log[0]);
|
|
abort();
|
|
}
|
|
|
|
GLuint fragment_shader = glCreateShader(GL_FRAGMENT_SHADER);
|
|
glShaderSource(fragment_shader, 1, &sources[1], &lengths[1]);
|
|
glCompileShader(fragment_shader);
|
|
glGetShaderiv(fragment_shader, GL_COMPILE_STATUS, &success);
|
|
if (!success) {
|
|
GLint max_length = 0;
|
|
glGetShaderiv(fragment_shader, GL_INFO_LOG_LENGTH, &max_length);
|
|
char error_log[1024];
|
|
fprintf(stderr, "Fragment shader compilation failed\n");
|
|
glGetShaderInfoLog(fragment_shader, max_length, &max_length, &error_log[0]);
|
|
fprintf(stderr, "%s\n", &error_log[0]);
|
|
abort();
|
|
}
|
|
|
|
GLuint shader_program = glCreateProgram();
|
|
glAttachShader(shader_program, vertex_shader);
|
|
glAttachShader(shader_program, fragment_shader);
|
|
glLinkProgram(shader_program);
|
|
|
|
size_t cnt = 0;
|
|
|
|
struct ShaderProgram* prg = &shader_program_pool[make_pair(shader_id0, shader_id1)];
|
|
prg->attrib_locations[cnt] = glGetAttribLocation(shader_program, "aVtxPos");
|
|
prg->attrib_sizes[cnt] = 4;
|
|
++cnt;
|
|
|
|
for (int i = 0; i < 2; i++) {
|
|
if (cc_features.used_textures[i]) {
|
|
char name[32];
|
|
sprintf(name, "aTexCoord%d", i);
|
|
prg->attrib_locations[cnt] = glGetAttribLocation(shader_program, name);
|
|
prg->attrib_sizes[cnt] = 2;
|
|
++cnt;
|
|
|
|
for (int j = 0; j < 2; j++) {
|
|
if (cc_features.clamp[i][j]) {
|
|
sprintf(name, "aTexClamp%s%d", j == 0 ? "S" : "T", i);
|
|
prg->attrib_locations[cnt] = glGetAttribLocation(shader_program, name);
|
|
prg->attrib_sizes[cnt] = 1;
|
|
++cnt;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (cc_features.opt_fog) {
|
|
prg->attrib_locations[cnt] = glGetAttribLocation(shader_program, "aFog");
|
|
prg->attrib_sizes[cnt] = 4;
|
|
++cnt;
|
|
}
|
|
|
|
if (cc_features.opt_grayscale) {
|
|
prg->attrib_locations[cnt] = glGetAttribLocation(shader_program, "aGrayscaleColor");
|
|
prg->attrib_sizes[cnt] = 4;
|
|
++cnt;
|
|
}
|
|
|
|
for (int i = 0; i < cc_features.num_inputs; i++) {
|
|
char name[16];
|
|
sprintf(name, "aInput%d", i + 1);
|
|
prg->attrib_locations[cnt] = glGetAttribLocation(shader_program, name);
|
|
prg->attrib_sizes[cnt] = cc_features.opt_alpha ? 4 : 3;
|
|
++cnt;
|
|
}
|
|
|
|
prg->opengl_program_id = shader_program;
|
|
prg->num_inputs = cc_features.num_inputs;
|
|
prg->used_textures[0] = cc_features.used_textures[0];
|
|
prg->used_textures[1] = cc_features.used_textures[1];
|
|
prg->num_floats = num_floats;
|
|
prg->num_attribs = cnt;
|
|
|
|
gfx_opengl_load_shader(prg);
|
|
|
|
if (cc_features.used_textures[0]) {
|
|
GLint sampler_location = glGetUniformLocation(shader_program, "uTex0");
|
|
glUniform1i(sampler_location, 0);
|
|
}
|
|
if (cc_features.used_textures[1]) {
|
|
GLint sampler_location = glGetUniformLocation(shader_program, "uTex1");
|
|
glUniform1i(sampler_location, 1);
|
|
}
|
|
|
|
if (cc_features.opt_alpha && cc_features.opt_noise) {
|
|
prg->frame_count_location = glGetUniformLocation(shader_program, "frame_count");
|
|
prg->noise_scale_location = glGetUniformLocation(shader_program, "noise_scale");
|
|
prg->used_noise = true;
|
|
} else {
|
|
prg->used_noise = false;
|
|
}
|
|
|
|
return prg;
|
|
}
|
|
|
|
static struct ShaderProgram *gfx_opengl_lookup_shader(uint64_t shader_id0, uint32_t shader_id1) {
|
|
auto it = shader_program_pool.find(make_pair(shader_id0, shader_id1));
|
|
return it == shader_program_pool.end() ? nullptr : &it->second;
|
|
}
|
|
|
|
static void gfx_opengl_shader_get_info(struct ShaderProgram *prg, uint8_t *num_inputs, bool used_textures[2]) {
|
|
*num_inputs = prg->num_inputs;
|
|
used_textures[0] = prg->used_textures[0];
|
|
used_textures[1] = prg->used_textures[1];
|
|
}
|
|
|
|
static GLuint gfx_opengl_new_texture(void) {
|
|
GLuint ret;
|
|
glGenTextures(1, &ret);
|
|
return ret;
|
|
}
|
|
|
|
static void gfx_opengl_delete_texture(uint32_t texID) {
|
|
glDeleteTextures(1, &texID);
|
|
}
|
|
|
|
static void gfx_opengl_select_texture(int tile, GLuint texture_id) {
|
|
glActiveTexture(GL_TEXTURE0 + tile);
|
|
glBindTexture(GL_TEXTURE_2D, texture_id);
|
|
}
|
|
|
|
static void gfx_opengl_upload_texture(const uint8_t *rgba32_buf, uint32_t width, uint32_t height) {
|
|
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, rgba32_buf);
|
|
}
|
|
|
|
#ifdef __SWITCH__
|
|
#define GL_MIRROR_CLAMP_TO_EDGE 0x8743
|
|
#endif
|
|
|
|
static uint32_t gfx_cm_to_opengl(uint32_t val) {
|
|
switch (val) {
|
|
case G_TX_NOMIRROR | G_TX_CLAMP:
|
|
return GL_CLAMP_TO_EDGE;
|
|
case G_TX_MIRROR | G_TX_WRAP:
|
|
return GL_MIRRORED_REPEAT;
|
|
case G_TX_MIRROR | G_TX_CLAMP:
|
|
return GL_MIRROR_CLAMP_TO_EDGE;
|
|
case G_TX_NOMIRROR | G_TX_WRAP:
|
|
return GL_REPEAT;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void gfx_opengl_set_sampler_parameters(int tile, bool linear_filter, uint32_t cms, uint32_t cmt) {
|
|
const GLint filter = linear_filter && current_filter_mode == FILTER_LINEAR ? GL_LINEAR : GL_NEAREST;
|
|
glActiveTexture(GL_TEXTURE0 + tile);
|
|
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, filter);
|
|
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, filter);
|
|
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, gfx_cm_to_opengl(cms));
|
|
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, gfx_cm_to_opengl(cmt));
|
|
}
|
|
|
|
static void gfx_opengl_set_depth_test_and_mask(bool depth_test, bool z_upd) {
|
|
if (depth_test || z_upd) {
|
|
glEnable(GL_DEPTH_TEST);
|
|
glDepthMask(z_upd ? GL_TRUE : GL_FALSE);
|
|
glDepthFunc(depth_test ? GL_LEQUAL : GL_ALWAYS);
|
|
current_depth_mask = z_upd;
|
|
} else {
|
|
glDisable(GL_DEPTH_TEST);
|
|
}
|
|
}
|
|
|
|
static void gfx_opengl_set_zmode_decal(bool zmode_decal) {
|
|
if (zmode_decal) {
|
|
glPolygonOffset(-2, -2);
|
|
glEnable(GL_POLYGON_OFFSET_FILL);
|
|
} else {
|
|
glPolygonOffset(0, 0);
|
|
glDisable(GL_POLYGON_OFFSET_FILL);
|
|
}
|
|
}
|
|
|
|
static void gfx_opengl_set_viewport(int x, int y, int width, int height) {
|
|
glViewport(x, y, width, height);
|
|
}
|
|
|
|
static void gfx_opengl_set_scissor(int x, int y, int width, int height) {
|
|
glScissor(x, y, width, height);
|
|
}
|
|
|
|
static void gfx_opengl_set_use_alpha(bool use_alpha) {
|
|
if (use_alpha) {
|
|
glEnable(GL_BLEND);
|
|
} else {
|
|
glDisable(GL_BLEND);
|
|
}
|
|
}
|
|
|
|
static void gfx_opengl_draw_triangles(float buf_vbo[], size_t buf_vbo_len, size_t buf_vbo_num_tris) {
|
|
//printf("flushing %d tris\n", buf_vbo_num_tris);
|
|
glBufferData(GL_ARRAY_BUFFER, sizeof(float) * buf_vbo_len, buf_vbo, GL_STREAM_DRAW);
|
|
glDrawArrays(GL_TRIANGLES, 0, 3 * buf_vbo_num_tris);
|
|
}
|
|
|
|
static void gfx_opengl_init(void) {
|
|
#ifndef __SWITCH__
|
|
glewInit();
|
|
#endif
|
|
|
|
glGenBuffers(1, &opengl_vbo);
|
|
glBindBuffer(GL_ARRAY_BUFFER, opengl_vbo);
|
|
|
|
#ifdef __APPLE__
|
|
glGenVertexArrays(1, &opengl_vao);
|
|
glBindVertexArray(opengl_vao);
|
|
#endif
|
|
|
|
glEnable(GL_DEPTH_CLAMP);
|
|
glDepthFunc(GL_LEQUAL);
|
|
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
|
|
|
|
framebuffers.resize(1); // for the default screen buffer
|
|
|
|
glGenRenderbuffers(1, &pixel_depth_rb);
|
|
glBindRenderbuffer(GL_RENDERBUFFER, pixel_depth_rb);
|
|
glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8, 1, 1);
|
|
glBindRenderbuffer(GL_RENDERBUFFER, 0);
|
|
|
|
glGenFramebuffers(1, &pixel_depth_fb);
|
|
glBindFramebuffer(GL_FRAMEBUFFER, pixel_depth_fb);
|
|
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_RENDERBUFFER, pixel_depth_rb);
|
|
glBindFramebuffer(GL_FRAMEBUFFER, 0);
|
|
|
|
pixel_depth_rb_size = 1;
|
|
}
|
|
|
|
static void gfx_opengl_on_resize(void) {
|
|
}
|
|
|
|
static void gfx_opengl_start_frame(void) {
|
|
frame_count++;
|
|
}
|
|
|
|
static void gfx_opengl_end_frame(void) {
|
|
glFlush();
|
|
}
|
|
|
|
static void gfx_opengl_finish_render(void) {
|
|
}
|
|
|
|
static int gfx_opengl_create_framebuffer() {
|
|
GLuint clrbuf;
|
|
glGenTextures(1, &clrbuf);
|
|
glBindTexture(GL_TEXTURE_2D, clrbuf);
|
|
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB8, 1, 1, 0, GL_RGB, GL_UNSIGNED_BYTE, NULL);
|
|
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
|
|
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
|
|
glBindTexture(GL_TEXTURE_2D, 0);
|
|
|
|
GLuint clrbuf_msaa;
|
|
glGenRenderbuffers(1, &clrbuf_msaa);
|
|
|
|
GLuint rbo;
|
|
glGenRenderbuffers(1, &rbo);
|
|
glBindRenderbuffer(GL_RENDERBUFFER, rbo);
|
|
glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8, 1, 1);
|
|
glBindRenderbuffer(GL_RENDERBUFFER, 0);
|
|
|
|
GLuint fbo;
|
|
glGenFramebuffers(1, &fbo);
|
|
|
|
size_t i = framebuffers.size();
|
|
framebuffers.resize(i + 1);
|
|
|
|
framebuffers[i].fbo = fbo;
|
|
framebuffers[i].clrbuf = clrbuf;
|
|
framebuffers[i].clrbuf_msaa = clrbuf_msaa;
|
|
framebuffers[i].rbo = rbo;
|
|
|
|
return i;
|
|
}
|
|
|
|
static void gfx_opengl_update_framebuffer_parameters(int fb_id, uint32_t width, uint32_t height, uint32_t msaa_level, bool opengl_invert_y, bool render_target, bool has_depth_buffer, bool can_extract_depth) {
|
|
Framebuffer& fb = framebuffers[fb_id];
|
|
|
|
width = max(width, 1U);
|
|
height = max(height, 1U);
|
|
|
|
glBindFramebuffer(GL_FRAMEBUFFER, fb.fbo);
|
|
|
|
if (fb_id != 0) {
|
|
if (fb.width != width || fb.height != height || fb.msaa_level != msaa_level) {
|
|
if (msaa_level <= 1) {
|
|
glBindTexture(GL_TEXTURE_2D, fb.clrbuf);
|
|
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB8, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, NULL);
|
|
glBindTexture(GL_TEXTURE_2D, 0);
|
|
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, fb.clrbuf, 0);
|
|
} else {
|
|
glBindRenderbuffer(GL_RENDERBUFFER, fb.clrbuf_msaa);
|
|
glRenderbufferStorageMultisample(GL_RENDERBUFFER, msaa_level, GL_RGB8, width, height);
|
|
glBindRenderbuffer(GL_RENDERBUFFER, 0);
|
|
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, fb.clrbuf_msaa);
|
|
}
|
|
}
|
|
|
|
if (has_depth_buffer && (fb.width != width || fb.height != height || fb.msaa_level != msaa_level || !fb.has_depth_buffer)) {
|
|
glBindRenderbuffer(GL_RENDERBUFFER, fb.rbo);
|
|
if (msaa_level <= 1) {
|
|
glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8, width, height);
|
|
} else {
|
|
glRenderbufferStorageMultisample(GL_RENDERBUFFER, msaa_level, GL_DEPTH24_STENCIL8, width, height);
|
|
}
|
|
glBindRenderbuffer(GL_RENDERBUFFER, 0);
|
|
}
|
|
|
|
if (!fb.has_depth_buffer && has_depth_buffer) {
|
|
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_RENDERBUFFER, fb.rbo);
|
|
} else if (fb.has_depth_buffer && !has_depth_buffer) {
|
|
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_RENDERBUFFER, 0);
|
|
}
|
|
}
|
|
|
|
fb.width = width;
|
|
fb.height = height;
|
|
fb.has_depth_buffer = has_depth_buffer;
|
|
fb.msaa_level = msaa_level;
|
|
fb.invert_y = opengl_invert_y;
|
|
}
|
|
|
|
void gfx_opengl_start_draw_to_framebuffer(int fb_id, float noise_scale) {
|
|
Framebuffer& fb = framebuffers[fb_id];
|
|
|
|
if (noise_scale != 0.0f) {
|
|
current_noise_scale = 1.0f / noise_scale;
|
|
}
|
|
glBindFramebuffer(GL_FRAMEBUFFER, fb.fbo);
|
|
current_framebuffer = fb_id;
|
|
}
|
|
|
|
void gfx_opengl_clear_framebuffer() {
|
|
glDisable(GL_SCISSOR_TEST);
|
|
glDepthMask(GL_TRUE);
|
|
glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
|
|
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
|
glDepthMask(current_depth_mask ? GL_TRUE : GL_FALSE);
|
|
glEnable(GL_SCISSOR_TEST);
|
|
}
|
|
|
|
void gfx_opengl_resolve_msaa_color_buffer(int fb_id_target, int fb_id_source) {
|
|
Framebuffer& fb_dst = framebuffers[fb_id_target];
|
|
Framebuffer& fb_src = framebuffers[fb_id_source];
|
|
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fb_dst.fbo);
|
|
glBindFramebuffer(GL_READ_FRAMEBUFFER, fb_src.fbo);
|
|
glBlitFramebuffer(0, 0, fb_src.width, fb_src.height, 0, 0, fb_dst.width, fb_dst.height, GL_COLOR_BUFFER_BIT, GL_NEAREST);
|
|
glBindFramebuffer(GL_FRAMEBUFFER, current_framebuffer);
|
|
}
|
|
|
|
void *gfx_opengl_get_framebuffer_texture_id(int fb_id) {
|
|
return (void *)(uintptr_t)framebuffers[fb_id].clrbuf;
|
|
}
|
|
|
|
void gfx_opengl_select_texture_fb(int fb_id) {
|
|
//glDisable(GL_DEPTH_TEST);
|
|
glActiveTexture(GL_TEXTURE0 + 0);
|
|
glBindTexture(GL_TEXTURE_2D, framebuffers[fb_id].clrbuf);
|
|
}
|
|
|
|
static std::unordered_map<std::pair<float, float>, uint16_t, hash_pair_ff> gfx_opengl_get_pixel_depth(int fb_id, const std::set<std::pair<float, float>>& coordinates) {
|
|
std::unordered_map<std::pair<float, float>, uint16_t, hash_pair_ff> res;
|
|
|
|
Framebuffer& fb = framebuffers[fb_id];
|
|
|
|
if (coordinates.size() == 1) {
|
|
uint32_t depth_stencil_value;
|
|
glBindFramebuffer(GL_FRAMEBUFFER, fb.fbo);
|
|
int x = coordinates.begin()->first;
|
|
int y = coordinates.begin()->second;
|
|
glReadPixels(x, fb.invert_y ? fb.height - y : y, 1, 1, GL_DEPTH_STENCIL, GL_UNSIGNED_INT_24_8, &depth_stencil_value);
|
|
res.emplace(*coordinates.begin(), (depth_stencil_value >> 18) << 2);
|
|
} else {
|
|
if (pixel_depth_rb_size < coordinates.size()) {
|
|
// Resizing a renderbuffer seems broken with Intel's driver, so recreate one instead.
|
|
glBindFramebuffer(GL_FRAMEBUFFER, pixel_depth_fb);
|
|
glDeleteRenderbuffers(1, &pixel_depth_rb);
|
|
glGenRenderbuffers(1, &pixel_depth_rb);
|
|
glBindRenderbuffer(GL_RENDERBUFFER, pixel_depth_rb);
|
|
glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8, coordinates.size(), 1);
|
|
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_RENDERBUFFER, pixel_depth_rb);
|
|
glBindRenderbuffer(GL_RENDERBUFFER, 0);
|
|
|
|
pixel_depth_rb_size = coordinates.size();
|
|
}
|
|
|
|
glBindFramebuffer(GL_READ_FRAMEBUFFER, fb.fbo);
|
|
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, pixel_depth_fb);
|
|
|
|
glDisable(GL_SCISSOR_TEST); // needed for the blit operation
|
|
|
|
{
|
|
size_t i = 0;
|
|
for (const auto& coord : coordinates) {
|
|
int x = coord.first;
|
|
int y = coord.second;
|
|
if (fb.invert_y) {
|
|
y = fb.height - y;
|
|
}
|
|
glBlitFramebuffer(x, y, x + 1, y + 1, i, 0, i + 1, 1, GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT, GL_NEAREST);
|
|
++i;
|
|
}
|
|
}
|
|
|
|
glBindFramebuffer(GL_READ_FRAMEBUFFER, pixel_depth_fb);
|
|
vector<uint32_t> depth_stencil_values(coordinates.size());
|
|
glReadPixels(0, 0, coordinates.size(), 1, GL_DEPTH_STENCIL, GL_UNSIGNED_INT_24_8, depth_stencil_values.data());
|
|
|
|
{
|
|
size_t i = 0;
|
|
for (const auto& coord : coordinates) {
|
|
res.emplace(coord, (depth_stencil_values[i++] >> 18) << 2);
|
|
}
|
|
}
|
|
}
|
|
|
|
glBindFramebuffer(GL_FRAMEBUFFER, current_framebuffer);
|
|
|
|
return res;
|
|
}
|
|
|
|
void gfx_opengl_set_texture_filter(FilteringMode mode) {
|
|
current_filter_mode = mode;
|
|
gfx_texture_cache_clear();
|
|
}
|
|
|
|
FilteringMode gfx_opengl_get_texture_filter(void) {
|
|
return current_filter_mode;
|
|
}
|
|
|
|
struct GfxRenderingAPI gfx_opengl_api = {
|
|
gfx_opengl_get_clip_parameters,
|
|
gfx_opengl_unload_shader,
|
|
gfx_opengl_load_shader,
|
|
gfx_opengl_create_and_load_new_shader,
|
|
gfx_opengl_lookup_shader,
|
|
gfx_opengl_shader_get_info,
|
|
gfx_opengl_new_texture,
|
|
gfx_opengl_select_texture,
|
|
gfx_opengl_upload_texture,
|
|
gfx_opengl_set_sampler_parameters,
|
|
gfx_opengl_set_depth_test_and_mask,
|
|
gfx_opengl_set_zmode_decal,
|
|
gfx_opengl_set_viewport,
|
|
gfx_opengl_set_scissor,
|
|
gfx_opengl_set_use_alpha,
|
|
gfx_opengl_draw_triangles,
|
|
gfx_opengl_init,
|
|
gfx_opengl_on_resize,
|
|
gfx_opengl_start_frame,
|
|
gfx_opengl_end_frame,
|
|
gfx_opengl_finish_render,
|
|
gfx_opengl_create_framebuffer,
|
|
gfx_opengl_update_framebuffer_parameters,
|
|
gfx_opengl_start_draw_to_framebuffer,
|
|
gfx_opengl_clear_framebuffer,
|
|
gfx_opengl_resolve_msaa_color_buffer,
|
|
gfx_opengl_get_pixel_depth,
|
|
gfx_opengl_get_framebuffer_texture_id,
|
|
gfx_opengl_select_texture_fb,
|
|
gfx_opengl_delete_texture,
|
|
gfx_opengl_set_texture_filter,
|
|
gfx_opengl_get_texture_filter
|
|
};
|
|
|
|
#endif
|