mirror of https://github.com/mgba-emu/mgba.git
GBA Video: Remove stale renderers
This commit is contained in:
Jeffrey Pfau
parent
ff99a859c1
commit
e834aa4300
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#include "video-glsl.h"
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#include "gba-io.h"
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#include <string.h>
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#define UNIFORM_LOCATION(UNIFORM) (glGetUniformLocation(glslRenderer->program, UNIFORM))
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static const GLfloat _vertices[4] = {
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-1, 0,
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1, 0
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};
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static const GLchar* _fragmentShader =
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"varying float x;\n"
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"uniform float y;\n"
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"uniform sampler2D vram;\n"
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"uniform float dispcnt;\n"
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"uniform float bg0cnt;\n"
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"uniform float bg1cnt;\n"
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"uniform float bg2cnt;\n"
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"uniform float bg3cnt;\n"
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"uniform float bg0hofs;\n"
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"uniform float bg0vofs;\n"
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"uniform float bg1hofs;\n"
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"uniform float bg1vofs;\n"
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"uniform float bg2hofs;\n"
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"uniform float bg2vofs;\n"
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"uniform float bg3hofs;\n"
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"uniform float bg3vofs;\n"
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"#define PALETTE_INDEX(i) texture2D(vram, (vec2(mod(i + 1.0, 512.0) / 512.0 - 1.0 / 1024.0, (floor(i / 512.0) + 1.0) / 256.0 - 1.0 / 1024.0)))\n"
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"#define VRAM_INDEX(i) texture2D(vram, (vec2(mod(i + 1.0, 512.0) / 512.0 - 1.0 / 1024.0, (floor(i / 512.0) + 161.0) / 256.0 - 1.0 / 1024.0)))\n"
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"#define DESERIALIZE(vec) dot(vec4(63488.0, 1984.0, 62.0, 1.0), vec)\n"
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"#define IMOD(a, b) mod(floor(a), b)\n"
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"#define BIT_CHECK(a, b) (IMOD(a / b, 2.0) > 0.0)\n"
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"#define DEBUG(fl) return vec4(fract(fl / 256.0), fract(floor(fl / 256.0) / 256.0), fract(floor(fl / 65536.0) / 256.0), 1.0)\n"
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"vec4 backgroundMode0(float bgcnt, float hofs, float vofs) {\n"
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" float charBase = IMOD(bgcnt / 4.0, 4.0) * 8192.0;\n"
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" float screenBase = IMOD(bgcnt / 256.0, 32.0) * 1024.0;\n"
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" float size = IMOD(bgcnt / 16384.0, 4.0);\n"
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" vec2 local = vec2(hofs + x, vofs + y);\n"
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" vec2 base = IMOD(local, 256.0);\n"
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" base -= IMOD(local, 8.0);\n"
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" if (size == 1.0) {\n"
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" base.x += IMOD(local.x / 256.0, 2.0) * 8192.0;\n"
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" } else if (size == 2.0) {\n"
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" base.y += IMOD(local.y / 256.0, 2.0) * 256.0;\n"
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" } else if (size == 3.0) {\n"
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" base += IMOD(local / 256.0, 2.0) * vec2(8192.0, 512.0);\n"
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" }\n"
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" screenBase += dot(base, vec2(1.0 / 8.0, 4.0));\n"
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" float mapData = DESERIALIZE(VRAM_INDEX(screenBase));\n"
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" charBase += IMOD(mapData, 1024.0) * 16.0 + dot(IMOD(local * vec2(1.0 / 4.0, 1.0), vec2(2.0, 8.0)), vec2(1.0, 2.0));\n"
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" float tileData = DESERIALIZE(VRAM_INDEX(charBase));\n"
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" tileData *= pow(0.5, IMOD(local.x, 4.0) * 4.0);\n"
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" tileData = IMOD(tileData, 16.0);\n"
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" if (tileData == 0.0) {\n"
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" return vec4(0, 0, 0, 0);\n"
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" }\n"
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" return PALETTE_INDEX(tileData + floor(mapData / 4096.0) * 16.0);\n"
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"}\n"
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"void runPriority(float priority, inout vec4 color) {\n"
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" if (color.a > 0.0) {\n"
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" return;\n"
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" }\n"
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" if (BIT_CHECK(dispcnt, 256.0) && IMOD(bg0cnt, 4.0) == priority) {\n"
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" color = backgroundMode0(bg0cnt, bg0hofs, bg0vofs);\n"
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" }\n"
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" if (color.a > 0.0) {\n"
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" return;\n"
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" }\n"
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" if (BIT_CHECK(dispcnt, 512.0) && IMOD(bg1cnt, 4.0) == priority) {\n"
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" color = backgroundMode0(bg1cnt, bg1hofs, bg1vofs);\n"
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" }\n"
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" if (color.a > 0.0) {\n"
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" return;\n"
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" }\n"
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" if (BIT_CHECK(dispcnt, 1024.0) && IMOD(bg2cnt, 4.0) == priority) {\n"
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" color = backgroundMode0(bg2cnt, bg2hofs, bg2vofs);\n"
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" }\n"
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" if (color.a > 0.0) {\n"
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" return;\n"
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" }\n"
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" if (BIT_CHECK(dispcnt, 2048.0) && IMOD(bg3cnt, 4.0) == priority) {\n"
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" color = backgroundMode0(bg3cnt, bg3hofs, bg3vofs);\n"
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" }\n"
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"}\n"
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"void main() {\n"
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" vec4 color = vec4(0.0, 0.0, 0.0, 0.0);\n"
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" runPriority(0.0, color);\n"
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" runPriority(1.0, color);\n"
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" runPriority(2.0, color);\n"
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" runPriority(3.0, color);\n"
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" if (color.a == 0.0) {\n"
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" color = texture2D(vram, vec2(0.0, y / 256.0));\n"
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" }\n"
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" gl_FragColor = color;\n"
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"}\n";
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static const GLchar* _vertexShader[] = {
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"varying float x;",
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"attribute vec2 vert;",
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"uniform float y;",
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"void main() {",
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" x = vert.x * 120.0 + 120.0;",
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" gl_Position = vec4(vert.x, 1.0 - (y + 1.0) / 80.0, 0, 1.0);",
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"}"
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};
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static void GBAVideoGLSLRendererInit(struct GBAVideoRenderer* renderer);
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static void GBAVideoGLSLRendererDeinit(struct GBAVideoRenderer* renderer);
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static void GBAVideoGLSLRendererWritePalette(struct GBAVideoRenderer* renderer, uint32_t address, uint16_t value);
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static uint16_t GBAVideoGLSLRendererWriteVideoRegister(struct GBAVideoRenderer* renderer, uint32_t address, uint16_t value);
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static void GBAVideoGLSLRendererDrawScanline(struct GBAVideoRenderer* renderer, int y);
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static void GBAVideoGLSLRendererFinishFrame(struct GBAVideoRenderer* renderer);
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void GBAVideoGLSLRendererCreate(struct GBAVideoGLSLRenderer* glslRenderer) {
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glslRenderer->d.init = GBAVideoGLSLRendererInit;
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glslRenderer->d.deinit = GBAVideoGLSLRendererDeinit;
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glslRenderer->d.writeVideoRegister = GBAVideoGLSLRendererWriteVideoRegister;
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glslRenderer->d.writePalette = GBAVideoGLSLRendererWritePalette;
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glslRenderer->d.drawScanline = GBAVideoGLSLRendererDrawScanline;
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glslRenderer->d.finishFrame = GBAVideoGLSLRendererFinishFrame;
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glslRenderer->d.turbo = 0;
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glslRenderer->d.framesPending = 0;
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glslRenderer->d.frameskip = 0;
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glslRenderer->fragmentShader = glCreateShader(GL_FRAGMENT_SHADER);
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glslRenderer->vertexShader = glCreateShader(GL_VERTEX_SHADER);
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glslRenderer->program = glCreateProgram();
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glShaderSource(glslRenderer->fragmentShader, 1, (const GLchar**) &_fragmentShader, 0);
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glShaderSource(glslRenderer->vertexShader, 7, _vertexShader, 0);
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glAttachShader(glslRenderer->program, glslRenderer->vertexShader);
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glAttachShader(glslRenderer->program, glslRenderer->fragmentShader);
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char log[1024];
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glCompileShader(glslRenderer->fragmentShader);
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glCompileShader(glslRenderer->vertexShader);
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glGetShaderInfoLog(glslRenderer->fragmentShader, 1024, 0, log);
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glGetShaderInfoLog(glslRenderer->vertexShader, 1024, 0, log);
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glLinkProgram(glslRenderer->program);
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glGenTextures(1, &glslRenderer->vramTexture);
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glBindTexture(GL_TEXTURE_2D, glslRenderer->vramTexture);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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memset(glslRenderer->vram, 0, sizeof (glslRenderer->vram));
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{
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pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
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glslRenderer->mutex = mutex;
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pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
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glslRenderer->upCond = cond;
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glslRenderer->downCond = cond;
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}
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}
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void GBAVideoGLSLRendererProcessEvents(struct GBAVideoGLSLRenderer* glslRenderer) {
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glUseProgram(glslRenderer->program);
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glUniform1i(UNIFORM_LOCATION("vram"), 0);
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glUniform1f(UNIFORM_LOCATION("dispcnt"), glslRenderer->io[0][REG_DISPCNT >> 1]);
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glUniform1f(UNIFORM_LOCATION("bg0cnt"), glslRenderer->io[0][REG_BG0CNT >> 1]);
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glUniform1f(UNIFORM_LOCATION("bg1cnt"), glslRenderer->io[0][REG_BG1CNT >> 1]);
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glUniform1f(UNIFORM_LOCATION("bg2cnt"), glslRenderer->io[0][REG_BG2CNT >> 1]);
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glUniform1f(UNIFORM_LOCATION("bg3cnt"), glslRenderer->io[0][REG_BG3CNT >> 1]);
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glUniform1f(UNIFORM_LOCATION("bg0hofs"), glslRenderer->io[0][REG_BG0HOFS >> 1]);
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glUniform1f(UNIFORM_LOCATION("bg0vofs"), glslRenderer->io[0][REG_BG0VOFS >> 1]);
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glUniform1f(UNIFORM_LOCATION("bg1hofs"), glslRenderer->io[0][REG_BG1HOFS >> 1]);
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glUniform1f(UNIFORM_LOCATION("bg1vofs"), glslRenderer->io[0][REG_BG1VOFS >> 1]);
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glUniform1f(UNIFORM_LOCATION("bg2hofs"), glslRenderer->io[0][REG_BG2HOFS >> 1]);
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glUniform1f(UNIFORM_LOCATION("bg2vofs"), glslRenderer->io[0][REG_BG2VOFS >> 1]);
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glUniform1f(UNIFORM_LOCATION("bg3hofs"), glslRenderer->io[0][REG_BG3HOFS >> 1]);
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glUniform1f(UNIFORM_LOCATION("bg3vofs"), glslRenderer->io[0][REG_BG3VOFS >> 1]);
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glEnable(GL_TEXTURE_2D);
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glActiveTexture(GL_TEXTURE0);
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glBindTexture(GL_TEXTURE_2D, glslRenderer->vramTexture);
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glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 512, 256, 0, GL_RGBA, GL_UNSIGNED_SHORT_5_5_5_1, glslRenderer->vram);
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GLuint location = glGetAttribLocation(glslRenderer->program, "vert");
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glEnableVertexAttribArray(location);
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glVertexAttribPointer(location, 2, GL_FLOAT, GL_FALSE, 0, _vertices);
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int y;
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for (y = 0; y < VIDEO_VERTICAL_PIXELS; ++y) {
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glUniform1f(UNIFORM_LOCATION("y"), y);
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glDrawArrays(GL_LINES, 0, 2);
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}
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glDisableVertexAttribArray(location);
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glFlush();
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}
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static void GBAVideoGLSLRendererInit(struct GBAVideoRenderer* renderer) {
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struct GBAVideoGLSLRenderer* glslRenderer = (struct GBAVideoGLSLRenderer*) renderer;
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glslRenderer->state = GLSL_NONE;
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glslRenderer->y = 0;
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glslRenderer->oldVram = renderer->vram;
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renderer->vram = &glslRenderer->vram[512 * 160];
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pthread_mutex_init(&glslRenderer->mutex, 0);
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pthread_cond_init(&glslRenderer->upCond, 0);
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pthread_cond_init(&glslRenderer->downCond, 0);
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}
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static void GBAVideoGLSLRendererDeinit(struct GBAVideoRenderer* renderer) {
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struct GBAVideoGLSLRenderer* glslRenderer = (struct GBAVideoGLSLRenderer*) renderer;
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/*glDeleteShader(glslRenderer->fragmentShader);
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glDeleteShader(glslRenderer->vertexShader);
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glDeleteProgram(glslRenderer->program);
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glDeleteTextures(1, &glslRenderer->paletteTexture);*/
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renderer->vram = glslRenderer->oldVram;
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pthread_mutex_lock(&glslRenderer->mutex);
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pthread_cond_broadcast(&glslRenderer->upCond);
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pthread_mutex_unlock(&glslRenderer->mutex);
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pthread_mutex_destroy(&glslRenderer->mutex);
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pthread_cond_destroy(&glslRenderer->upCond);
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pthread_cond_destroy(&glslRenderer->downCond);
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}
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static void GBAVideoGLSLRendererWritePalette(struct GBAVideoRenderer* renderer, uint32_t address, uint16_t value) {
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struct GBAVideoGLSLRenderer* glslRenderer = (struct GBAVideoGLSLRenderer*) renderer;
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GLshort color = 1;
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color |= (value & 0x001F) << 11;
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color |= (value & 0x03E0) << 1;
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color |= (value & 0x7C00) >> 9;
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glslRenderer->vram[(address >> 1) + glslRenderer->y * 512] = color;
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}
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static uint16_t GBAVideoGLSLRendererWriteVideoRegister(struct GBAVideoRenderer* renderer, uint32_t address, uint16_t value) {
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struct GBAVideoGLSLRenderer* glslRenderer = (struct GBAVideoGLSLRenderer*) renderer;
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glslRenderer->io[glslRenderer->y][address >> 1] = value;
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return value;
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}
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static void GBAVideoGLSLRendererDrawScanline(struct GBAVideoRenderer* renderer, int y) {
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struct GBAVideoGLSLRenderer* glslRenderer = (struct GBAVideoGLSLRenderer*) renderer;
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glslRenderer->y = y + 1;
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if (y + 1 < VIDEO_VERTICAL_PIXELS) {
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memcpy(&glslRenderer->vram[(y + 1) * 512], &glslRenderer->vram[y * 512], 1024);
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memcpy(glslRenderer->io[y + 1], glslRenderer->io[y], sizeof(*glslRenderer->io));
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} else {
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glslRenderer->y = 0;
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memcpy(&glslRenderer->vram[0], &glslRenderer->vram[y * 512], 1024);
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memcpy(glslRenderer->io[0], glslRenderer->io[y], sizeof(*glslRenderer->io));
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}
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}
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static void GBAVideoGLSLRendererFinishFrame(struct GBAVideoRenderer* renderer) {
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struct GBAVideoGLSLRenderer* glslRenderer = (struct GBAVideoGLSLRenderer*) renderer;
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pthread_mutex_lock(&glslRenderer->mutex);
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glslRenderer->state = GLSL_NONE;
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if (renderer->frameskip > 0) {
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--renderer->frameskip;
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} else {
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renderer->framesPending++;
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pthread_cond_broadcast(&glslRenderer->upCond);
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if (!renderer->turbo) {
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pthread_cond_wait(&glslRenderer->downCond, &glslRenderer->mutex);
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}
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}
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pthread_mutex_unlock(&glslRenderer->mutex);
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}
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#ifndef VIDEO_GLSL_H
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#define VIDEO_GLSL_H
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#include "util/common.h"
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#include "gba-video.h"
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#include <pthread.h>
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#ifdef __APPLE__
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#include <OpenGL/gl.h>
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#else
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#include <GL/gl.h>
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#endif
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struct GBAVideoGLSLRenderer {
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struct GBAVideoRenderer d;
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int y;
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enum {
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GLSL_NONE,
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GLSL_DRAW_SCANLINE,
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GLSL_FINISH_FRAME
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} state;
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GLuint fragmentShader;
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GLuint vertexShader;
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GLuint program;
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GLuint vramTexture;
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GLushort vram[512 * 256];
|
|
||||||
GLushort io[160][0x30];
|
|
||||||
|
|
||||||
uint16_t* oldVram;
|
|
||||||
|
|
||||||
pthread_mutex_t mutex;
|
|
||||||
pthread_cond_t upCond;
|
|
||||||
pthread_cond_t downCond;
|
|
||||||
};
|
|
||||||
|
|
||||||
void GBAVideoGLSLRendererCreate(struct GBAVideoGLSLRenderer* renderer);
|
|
||||||
void GBAVideoGLSLRendererProcessEvents(struct GBAVideoGLSLRenderer* renderer);
|
|
||||||
|
|
||||||
#endif
|
|
||||||
Loading…
Reference in New Issue