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shader prog

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This commit is contained in:
Dominic Masters
2026-03-17 17:05:39 -05:00
parent ff92a78dda
commit 66ebcb1608
11 changed files with 303 additions and 140 deletions
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196
src/duskgl/display/shader/shadergl.c
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@@ -12,116 +12,120 @@
errorret_t shaderInitGL(shadergl_t *shader, const shaderdefinitiongl_t *def) {
assertNotNull(shader, "Shader cannot be null");
assertNotNull(def, "Shader definition cannot be null");
memoryZero(shader, sizeof(shadergl_t));
// Create vertex shader
shader->vertexShaderId = glCreateShader(GL_VERTEX_SHADER);
errorret_t err = errorGLCheck();
errorChain(err);
glShaderSource(shader->vertexShaderId, 1, &def->vert, NULL);
err = errorGLCheck();
if(err.code != ERROR_OK) {
glDeleteShader(shader->vertexShaderId);
#ifdef DUSK_OPENGL_LEGACY
// No initialization needed for legacy shader
errorOk();
#else
// Create vertex shader
shader->vertexShaderId = glCreateShader(GL_VERTEX_SHADER);
errorret_t err = errorGLCheck();
errorChain(err);
}
glCompileShader(shader->vertexShaderId);
err = errorGLCheck();
if(err.code != ERROR_OK) {
glDeleteShader(shader->vertexShaderId);
errorChain(err);
}
glShaderSource(shader->vertexShaderId, 1, &def->vert, NULL);
err = errorGLCheck();
if(err.code != ERROR_OK) {
glDeleteShader(shader->vertexShaderId);
errorChain(err);
}
GLint ok = 0;
glGetShaderiv(shader->vertexShaderId, GL_COMPILE_STATUS, &ok);
if(!ok) {
GLchar log[1024];
glGetShaderInfoLog(shader->vertexShaderId, sizeof(log), NULL, log);
glDeleteShader(shader->vertexShaderId);
errorThrow("Vertex shader compilation failed: %s", log);
}
glCompileShader(shader->vertexShaderId);
err = errorGLCheck();
if(err.code != ERROR_OK) {
glDeleteShader(shader->vertexShaderId);
errorChain(err);
}
// Create fragment shader
shader->fragmentShaderId = glCreateShader(GL_FRAGMENT_SHADER);
err = errorGLCheck();
if(err.code != ERROR_OK) {
glDeleteShader(shader->vertexShaderId);
errorChain(err);
}
GLint ok = 0;
glGetShaderiv(shader->vertexShaderId, GL_COMPILE_STATUS, &ok);
if(!ok) {
GLchar log[1024];
glGetShaderInfoLog(shader->vertexShaderId, sizeof(log), NULL, log);
glDeleteShader(shader->vertexShaderId);
errorThrow("Vertex shader compilation failed: %s", log);
}
glShaderSource(shader->fragmentShaderId, 1, &def->frag, NULL);
err = errorGLCheck();
if(err.code != ERROR_OK) {
glDeleteShader(shader->vertexShaderId);
glDeleteShader(shader->fragmentShaderId);
errorChain(err);
}
// Create fragment shader
shader->fragmentShaderId = glCreateShader(GL_FRAGMENT_SHADER);
err = errorGLCheck();
if(err.code != ERROR_OK) {
glDeleteShader(shader->vertexShaderId);
errorChain(err);
}
glCompileShader(shader->fragmentShaderId);
err = errorGLCheck();
if(err.code != ERROR_OK) {
glDeleteShader(shader->vertexShaderId);
glDeleteShader(shader->fragmentShaderId);
errorChain(err);
}
glShaderSource(shader->fragmentShaderId, 1, &def->frag, NULL);
err = errorGLCheck();
if(err.code != ERROR_OK) {
glDeleteShader(shader->vertexShaderId);
glDeleteShader(shader->fragmentShaderId);
errorChain(err);
}
glGetShaderiv(shader->fragmentShaderId, GL_COMPILE_STATUS, &ok);
if(!ok) {
GLchar log[1024];
glGetShaderInfoLog(shader->fragmentShaderId, sizeof(log), NULL, log);
glDeleteShader(shader->vertexShaderId);
glDeleteShader(shader->fragmentShaderId);
errorThrow("Fragment shader compilation failed: %s", log);
}
glCompileShader(shader->fragmentShaderId);
err = errorGLCheck();
if(err.code != ERROR_OK) {
glDeleteShader(shader->vertexShaderId);
glDeleteShader(shader->fragmentShaderId);
errorChain(err);
}
// Create shader program
shader->shaderProgramId = glCreateProgram();
err = errorGLCheck();
if(err.code != ERROR_OK) {
glDeleteShader(shader->vertexShaderId);
glDeleteShader(shader->fragmentShaderId);
errorChain(err);
}
glGetShaderiv(shader->fragmentShaderId, GL_COMPILE_STATUS, &ok);
if(!ok) {
GLchar log[1024];
glGetShaderInfoLog(shader->fragmentShaderId, sizeof(log), NULL, log);
glDeleteShader(shader->vertexShaderId);
glDeleteShader(shader->fragmentShaderId);
errorThrow("Fragment shader compilation failed: %s", log);
}
glAttachShader(shader->shaderProgramId, shader->vertexShaderId);
err = errorGLCheck();
if(err.code != ERROR_OK) {
glDeleteProgram(shader->shaderProgramId);
glDeleteShader(shader->vertexShaderId);
glDeleteShader(shader->fragmentShaderId);
errorChain(err);
}
// Create shader program
shader->shaderProgramId = glCreateProgram();
err = errorGLCheck();
if(err.code != ERROR_OK) {
glDeleteShader(shader->vertexShaderId);
glDeleteShader(shader->fragmentShaderId);
errorChain(err);
}
glAttachShader(shader->shaderProgramId, shader->fragmentShaderId);
err = errorGLCheck();
if(err.code != ERROR_OK) {
glDeleteProgram(shader->shaderProgramId);
glDeleteShader(shader->vertexShaderId);
glDeleteShader(shader->fragmentShaderId);
errorChain(err);
}
glAttachShader(shader->shaderProgramId, shader->vertexShaderId);
err = errorGLCheck();
if(err.code != ERROR_OK) {
glDeleteProgram(shader->shaderProgramId);
glDeleteShader(shader->vertexShaderId);
glDeleteShader(shader->fragmentShaderId);
errorChain(err);
}
glLinkProgram(shader->shaderProgramId);
err = errorGLCheck();
if(err.code != ERROR_OK) {
glDeleteProgram(shader->shaderProgramId);
glDeleteShader(shader->vertexShaderId);
glDeleteShader(shader->fragmentShaderId);
errorChain(err);
}
glAttachShader(shader->shaderProgramId, shader->fragmentShaderId);
err = errorGLCheck();
if(err.code != ERROR_OK) {
glDeleteProgram(shader->shaderProgramId);
glDeleteShader(shader->vertexShaderId);
glDeleteShader(shader->fragmentShaderId);
errorChain(err);
}
ok = 0;
glGetProgramiv(shader->shaderProgramId, GL_LINK_STATUS, &ok);
if(!ok) {
GLchar log[1024];
glGetProgramInfoLog(shader->shaderProgramId, sizeof(log), NULL, log);
glDeleteProgram(shader->shaderProgramId);
glDeleteShader(shader->vertexShaderId);
glDeleteShader(shader->fragmentShaderId);
errorThrow("Shader program linking failed: %s", log);
}
glLinkProgram(shader->shaderProgramId);
err = errorGLCheck();
if(err.code != ERROR_OK) {
glDeleteProgram(shader->shaderProgramId);
glDeleteShader(shader->vertexShaderId);
glDeleteShader(shader->fragmentShaderId);
errorChain(err);
}
ok = 0;
glGetProgramiv(shader->shaderProgramId, GL_LINK_STATUS, &ok);
if(!ok) {
GLchar log[1024];
glGetProgramInfoLog(shader->shaderProgramId, sizeof(log), NULL, log);
glDeleteProgram(shader->shaderProgramId);
glDeleteShader(shader->vertexShaderId);
glDeleteShader(shader->fragmentShaderId);
errorThrow("Shader program linking failed: %s", log);
}
#endif
errorOk();
}