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OpenGL: Fix GLES2 overlay drawing

This commit is contained in:
Vicki Pfau 2023-04-24 04:47:07 -07:00
parent 0b79184bf3
commit 2e5751ef6f
2 changed files with 38 additions and 9 deletions
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40
src/platform/opengl/gles2.c
View File

@ -81,6 +81,15 @@ static const char* const _nullFragmentShader =
" gl_FragColor = color;\n"
"}";
static const char* const _thruFragmentShader =
"varying vec2 texCoord;\n"
"uniform sampler2D tex;\n"
"void main() {\n"
" vec4 color = texture2D(tex, texCoord);\n"
" gl_FragColor = color;\n"
"}";
static const char* const _interframeFragmentShader =
"varying vec2 texCoord;\n"
"uniform sampler2D tex;\n"
@ -159,8 +168,9 @@ static void mGLES2ContextInit(struct VideoBackend* v, WHandle handle) {
uniforms[3].max.fvec3[1] = 1.0f;
uniforms[3].max.fvec3[2] = 1.0f;
mGLES2ShaderInit(&context->initialShader, _vertexShader, _fragmentShader, -1, -1, false, uniforms, 4);
mGLES2ShaderInit(&context->finalShader, 0, 0, 0, 0, false, 0, 0);
mGLES2ShaderInit(&context->interframeShader, 0, _interframeFragmentShader, -1, -1, false, 0, 0);
mGLES2ShaderInit(&context->finalShader, 0, 0, 0, 0, false, NULL, 0);
mGLES2ShaderInit(&context->interframeShader, 0, _interframeFragmentShader, -1, -1, false, NULL, 0);
mGLES2ShaderInit(&context->overlayShader, _vertexShader, _thruFragmentShader, -1, -1, false, NULL, 0);
#ifdef BUILD_GLES3
if (context->initialShader.vao != (GLuint) -1) {
@ -170,10 +180,17 @@ static void mGLES2ContextInit(struct VideoBackend* v, WHandle handle) {
glBindBuffer(GL_ARRAY_BUFFER, context->vbo);
glBindVertexArray(context->interframeShader.vao);
glBindBuffer(GL_ARRAY_BUFFER, context->vbo);
glBindVertexArray(context->overlayShader.vao);
glBindBuffer(GL_ARRAY_BUFFER, context->vbo);
glBindVertexArray(0);
}
#endif
glDeleteFramebuffers(1, &context->overlayShader.fbo);
glDeleteTextures(1, &context->overlayShader.tex);
context->overlayShader.fbo = context->initialShader.fbo;
context->overlayShader.tex = context->initialShader.tex;
glDeleteFramebuffers(1, &context->finalShader.fbo);
glDeleteTextures(1, &context->finalShader.tex);
context->finalShader.fbo = 0;
@ -221,8 +238,8 @@ static void mGLES2ContextSetLayerDimensions(struct VideoBackend* v, enum VideoLa
context->shaders[n].dirty = true;
}
}
context->initialShader.dirty = true;
context->interframeShader.dirty = true;
glBindTexture(GL_TEXTURE_2D, context->initialShader.tex);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, frame.width, frame.height, 0, GL_RGB, GL_UNSIGNED_BYTE, 0);
context->width = frame.width;
context->height = frame.height;
}
@ -245,6 +262,8 @@ static void mGLES2ContextDeinit(struct VideoBackend* v) {
mGLES2ShaderDeinit(&context->initialShader);
mGLES2ShaderDeinit(&context->finalShader);
mGLES2ShaderDeinit(&context->interframeShader);
context->overlayShader.fbo = 0;
mGLES2ShaderDeinit(&context->overlayShader);
free(context->initialShader.uniforms);
}
@ -321,7 +340,7 @@ static void _drawShaderEx(struct mGLES2Context* context, struct mGLES2Shader* sh
}
if (layer >= 0 && layer < VIDEO_LAYER_MAX) {
glViewport(context->layerDims[layer].x - context->x, context->layerDims[layer].y - context->y, context->layerDims[layer].width, context->layerDims[layer].height);
glViewport(context->layerDims[layer].x - context->x, context->height - context->layerDims[layer].y - context->layerDims[layer].height + context->y, context->layerDims[layer].width, context->layerDims[layer].height);
} else {
glViewport(padW, padH, drawW, drawH);
}
@ -423,12 +442,17 @@ void mGLES2ContextDrawFrame(struct VideoBackend* v) {
context->finalShader.filter = v->filter;
int layer;
for (layer = 0; layer <= VIDEO_LAYER_IMAGE; ++layer) {
for (layer = 0; layer < VIDEO_LAYER_MAX; ++layer) {
if (context->layerDims[layer].width < 1 || context->layerDims[layer].height < 1) {
continue;
}
glBindTexture(GL_TEXTURE_2D, context->tex[layer]);
if (layer != VIDEO_LAYER_IMAGE) {
context->overlayShader.blend = layer > VIDEO_LAYER_BACKGROUND;
_drawShaderEx(context, &context->overlayShader, layer);
} else {
_drawShaderEx(context, &context->initialShader, layer);
}
if (layer != VIDEO_LAYER_IMAGE) {
continue;
}
@ -659,10 +683,14 @@ void mGLES2ShaderInit(struct mGLES2Shader* shader, const char* vs, const char* f
}
void mGLES2ShaderDeinit(struct mGLES2Shader* shader) {
if (shader->tex) {
glDeleteTextures(1, &shader->tex);
}
glDeleteShader(shader->fragmentShader);
glDeleteProgram(shader->program);
if (shader->fbo) {
glDeleteFramebuffers(1, &shader->fbo);
}
#ifdef BUILD_GLES3
if (shader->vao != (GLuint) -1) {
glDeleteVertexArrays(1, &shader->vao);

1
src/platform/opengl/gles2.h
View File

@ -92,6 +92,7 @@ struct mGLES2Context {
struct mGLES2Shader initialShader;
struct mGLES2Shader finalShader;
struct mGLES2Shader interframeShader;
struct mGLES2Shader overlayShader;
struct mGLES2Shader* shaders;
size_t nShaders;