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Propagate shader compile/link errors

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And silence the no-error case.
This commit is contained in:
Kristian Høgsberg 2010-06-14 21:03:11 -04:00
parent bf6ceda545
commit a946821b4f
3 changed files with 28 additions and 10 deletions
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32
compositor.c
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@ -801,27 +801,36 @@ static const char fragment_shader[] =
" gl_FragColor = texture2D(tex, v_texcoord)\n;"
"}\n";
static void
static int
init_shaders(struct wlsc_compositor *ec)
{
GLuint v, f, program;
const char *p;
char msg[512];
GLfloat vertices[4 * 5];
GLint status;
p = vertex_shader;
v = glCreateShader(GL_VERTEX_SHADER);
glShaderSource(v, 1, &p, NULL);
glCompileShader(v);
glGetShaderInfoLog(v, sizeof msg, NULL, msg);
printf("vertex shader info: %s\n", msg);
glGetShaderiv(v, GL_COMPILE_STATUS, &status);
if (!status) {
glGetShaderInfoLog(v, sizeof msg, NULL, msg);
fprintf(stderr, "vertex shader info: %s\n", msg);
return -1;
}
p = fragment_shader;
f = glCreateShader(GL_FRAGMENT_SHADER);
glShaderSource(f, 1, &p, NULL);
glCompileShader(f);
glGetShaderInfoLog(f, sizeof msg, NULL, msg);
printf("fragment shader info: %s\n", msg);
glGetShaderiv(f, GL_COMPILE_STATUS, &status);
if (!status) {
glGetShaderInfoLog(f, sizeof msg, NULL, msg);
fprintf(stderr, "fragment shader info: %s\n", msg);
return -1;
}
program = glCreateProgram();
glAttachShader(program, v);
@ -830,8 +839,12 @@ init_shaders(struct wlsc_compositor *ec)
glBindAttribLocation(program, 1, "texcoord");
glLinkProgram(program);
glGetProgramInfoLog(program, sizeof msg, NULL, msg);
printf("info: %s\n", msg);
glGetProgramiv(program, GL_LINK_STATUS, &status);
if (!status) {
glGetProgramInfoLog(program, sizeof msg, NULL, msg);
fprintf(stderr, "link info: %s\n", msg);
return -1;
}
glUseProgram(program);
ec->proj_uniform = glGetUniformLocation(program, "proj");
@ -864,6 +877,8 @@ init_shaders(struct wlsc_compositor *ec)
glGenBuffers(1, &ec->vbo);
glBindBuffer(GL_ARRAY_BUFFER, ec->vbo);
glBufferData(GL_ARRAY_BUFFER, sizeof vertices, vertices, GL_STATIC_DRAW);
return 0;
}
static const struct wl_interface visual_interface = {
@ -938,7 +953,8 @@ wlsc_compositor_init(struct wlsc_compositor *ec, struct wl_display *display)
glGenFramebuffers(1, &ec->fbo);
glBindFramebuffer(GL_FRAMEBUFFER, ec->fbo);
glActiveTexture(GL_TEXTURE0);
init_shaders(ec);
if (init_shaders(ec) < 0)
return -1;
loop = wl_display_get_event_loop(ec->wl_display);
ec->timer_source = wl_event_loop_add_timer(loop, repaint, ec);