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renderer: Show error message when shader compilation failse

shader-damage-experiments
Andri Yngvason 2020-03-25 20:44:54 +00:00
parent 13216fa507
commit 996729f9bb
1 changed files with 24 additions and 3 deletions
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27
src/render.c
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@ -196,14 +196,35 @@ static void gl_debug_init()
#endif #endif
} }
static int gl_load_shader(GLuint* dst, const char* source, GLenum type) static void gl_shader_log(GLuint shader)
{
GLint len = 0;
glGetShaderiv(shader, GL_INFO_LOG_LENGTH, &len);
char* log = malloc(len);
assert(log);
glGetShaderInfoLog(shader, len, &len, log);
fwrite(log, 1, len, stderr);
free(log);
}
static int gl_load_shader(GLuint* dst, const char* path, const char* source,
GLenum type)
{ {
GLuint shader = glCreateShader(type); GLuint shader = glCreateShader(type);
glShaderSource(shader, 1, &source, NULL); glShaderSource(shader, 1, &source, NULL);
glCompileShader(shader); glCompileShader(shader);
if (glGetError() != GL_NO_ERROR) { GLint is_compiled = 0;
glGetShaderiv(shader, GL_COMPILE_STATUS, &is_compiled);
if (!is_compiled) {
log_error("Failed to compile shader: %s\n", path);
gl_shader_log(shader);
glDeleteShader(shader); glDeleteShader(shader);
return -1; return -1;
} }
@ -276,7 +297,7 @@ static int gl_load_shader_from_file(GLuint* dst, const char* file, GLenum type)
if (!source) if (!source)
return -1; return -1;
int rc = gl_load_shader(dst, source, type); int rc = gl_load_shader(dst, file, source, type);
free(source); free(source);
return rc; return rc;