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compositor: Refactor shader setup a bit

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This commit is contained in:
Kristian Høgsberg
2011-04-22 14:23:51 -04:00
parent b31d7d7423
commit 7ffc4488f4
2 changed files with 51 additions and 36 deletions
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compositor/compositor.c
+41 -36
View File
@@ -608,8 +608,10 @@ wlsc_output_repaint(struct wlsc_output *output)
glViewport(0, 0, output->width, output->height);
glUniformMatrix4fv(ec->proj_uniform, 1, GL_FALSE, output->matrix.d);
glUniform1i(ec->tex_uniform, 0);
glUseProgram(ec->texture_shader.program);
glUniformMatrix4fv(ec->texture_shader.proj_uniform,
1, GL_FALSE, output->matrix.d);
glUniform1i(ec->texture_shader.tex_uniform, 0);
pixman_region32_init(&new_damage);
pixman_region32_init(&total_damage);
@@ -1508,7 +1510,7 @@ static const char vertex_shader[] =
" v_texcoord = texcoord;\n"
"}\n";
static const char fragment_shader[] =
static const char texture_fragment_shader[] =
"precision mediump float;\n"
"varying vec2 v_texcoord;\n"
"uniform sampler2D tex;\n"
@@ -1518,52 +1520,53 @@ static const char fragment_shader[] =
"}\n";
static int
init_shaders(struct wlsc_compositor *ec)
compile_shader(GLenum type, const char *source)
{
GLuint v, f, program;
const char *p;
GLuint s;
char msg[512];
GLint status;
p = vertex_shader;
v = glCreateShader(GL_VERTEX_SHADER);
glShaderSource(v, 1, &p, NULL);
glCompileShader(v);
glGetShaderiv(v, GL_COMPILE_STATUS, &status);
s = glCreateShader(type);
glShaderSource(s, 1, &source, NULL);
glCompileShader(s);
glGetShaderiv(s, GL_COMPILE_STATUS, &status);
if (!status) {
glGetShaderInfoLog(v, sizeof msg, NULL, msg);
fprintf(stderr, "vertex shader info: %s\n", msg);
return -1;
glGetShaderInfoLog(s, sizeof msg, NULL, msg);
fprintf(stderr, "shader info: %s\n", msg);
return GL_NONE;
}
p = fragment_shader;
f = glCreateShader(GL_FRAGMENT_SHADER);
glShaderSource(f, 1, &p, NULL);
glCompileShader(f);
glGetShaderiv(f, GL_COMPILE_STATUS, &status);
if (!status) {
glGetShaderInfoLog(f, sizeof msg, NULL, msg);
fprintf(stderr, "fragment shader info: %s\n", msg);
return -1;
}
return s;
}
program = glCreateProgram();
glAttachShader(program, v);
glAttachShader(program, f);
glBindAttribLocation(program, 0, "position");
glBindAttribLocation(program, 1, "texcoord");
static int
wlsc_shader_init(struct wlsc_shader *shader,
const char *vertex_source, const char *fragment_source)
{
char msg[512];
GLint status;
glLinkProgram(program);
glGetProgramiv(program, GL_LINK_STATUS, &status);
shader->vertex_shader =
compile_shader(GL_VERTEX_SHADER, vertex_source);
shader->fragment_shader =
compile_shader(GL_FRAGMENT_SHADER, fragment_source);
shader->program = glCreateProgram();
glAttachShader(shader->program, shader->vertex_shader);
glAttachShader(shader->program, shader->fragment_shader);
glBindAttribLocation(shader->program, 0, "position");
glBindAttribLocation(shader->program, 1, "texcoord");
glLinkProgram(shader->program);
glGetProgramiv(shader->program, GL_LINK_STATUS, &status);
if (!status) {
glGetProgramInfoLog(program, sizeof msg, NULL, msg);
glGetProgramInfoLog(shader->program, sizeof msg, NULL, msg);
fprintf(stderr, "link info: %s\n", msg);
return -1;
}
glUseProgram(program);
ec->proj_uniform = glGetUniformLocation(program, "proj");
ec->tex_uniform = glGetUniformLocation(program, "tex");
shader->proj_uniform = glGetUniformLocation(shader->program, "proj");
shader->tex_uniform = glGetUniformLocation(shader->program, "tex");
return 0;
}
@@ -1720,7 +1723,9 @@ wlsc_compositor_init(struct wlsc_compositor *ec, struct wl_display *display)
}
glActiveTexture(GL_TEXTURE0);
if (init_shaders(ec) < 0)
if (wlsc_shader_init(&ec->texture_shader,
vertex_shader, texture_fragment_shader) < 0)
return -1;
loop = wl_display_get_event_loop(ec->wl_display);
compositor/compositor.h
+10
View File
@@ -90,6 +90,14 @@ struct wlsc_sprite {
int height;
};
struct wlsc_shader {
GLuint program;
GLuint vertex_shader, fragment_shader;
GLuint proj_uniform;
GLuint tex_uniform;
GLuint color_uniform;
};
enum {
WLSC_COMPOSITOR_ACTIVE,
WLSC_COMPOSITOR_SLEEPING
@@ -106,6 +114,8 @@ struct wlsc_compositor {
GLuint fbo;
GLuint proj_uniform, tex_uniform;
struct wlsc_sprite **pointer_sprites;
struct wlsc_shader texture_shader;
struct wlsc_shader solid_shader;
struct wl_display *wl_display;
/* We implement the shell interface. */