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Add wlr_renderer and move quad rendering there

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This commit is contained in:
Drew DeVault 2017-06-08 12:02:51 -04:00
parent 211488131f
commit 83f8864f0a
7 changed files with 215 additions and 130 deletions
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109
example/rotation.c
View File

@ -16,37 +16,13 @@
#include <math.h>
#include "cat.h"
static const GLchar vert_src[] =
"uniform mat4 proj;\n"
"attribute vec2 pos;\n"
"attribute vec2 texcoord;\n"
"varying vec2 v_texcoord;\n"
"void main() {\n"
" gl_Position = proj * vec4(pos, 0.0, 1.0);\n"
" v_texcoord = texcoord;\n"
"}\n";
static const GLchar frag_src[] =
"precision mediump float;\n"
"varying vec2 v_texcoord;\n"
"uniform sampler2D tex;\n"
"void main() {\n"
" gl_FragColor = texture2D(tex, v_texcoord);\n"
"}\n";
struct state {
struct wl_listener output_add;
struct wl_listener output_remove;
struct wl_list outputs;
struct wl_list config;
struct gl {
struct wlr_shader *shader;
GLuint vao;
GLuint vbo;
GLuint ebo;
GLuint tex;
} gl;
struct wlr_renderer *renderer;
struct wlr_surface *cat_texture;
};
struct output_state {
@ -62,59 +38,9 @@ struct output_state {
struct output_config {
char *name;
enum wl_output_transform transform;
struct wl_list link;
};
static void init_gl(struct gl *gl) {
gl->shader = wlr_shader_init(vert_src);
if (!gl->shader) {
exit(1);
}
if (!wlr_shader_add_format(gl->shader, WL_SHM_FORMAT_RGB332, frag_src)) {
exit(1);
}
GLfloat verticies[] = {
1, 1, 1, 1, // bottom right
1, 0, 1, 0, // top right
0, 0, 0, 0, // top left
0, 1, 0, 1, // bottom left
};
GLuint indicies[] = {
0, 1, 3,
1, 2, 3,
};
glGenVertexArrays(1, &gl->vao);
glGenBuffers(1, &gl->vbo);
glBindVertexArray(gl->vao);
glBindBuffer(GL_ARRAY_BUFFER, gl->vbo);
glEnableVertexAttribArray(0);
glEnableVertexAttribArray(1);
glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 4 * sizeof(GLfloat), (void *)0);
glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 4 * sizeof(GLfloat), (void *)(2 * sizeof(GLfloat)));
glBufferData(GL_ARRAY_BUFFER, sizeof(verticies), verticies, GL_STATIC_DRAW);
glGenBuffers(1, &gl->ebo);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, gl->ebo);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(indicies), indicies, GL_STATIC_DRAW);
glGenTextures(1, &gl->tex);
glBindTexture(GL_TEXTURE_2D, gl->tex);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, cat_tex.width, cat_tex.height,
0, GL_RGB, GL_UNSIGNED_BYTE, cat_tex.pixel_data);
}
static void cleanup_gl(struct gl *gl) {
wlr_shader_destroy(gl->shader);
glDeleteVertexArrays(1, &gl->vao);
glDeleteBuffers(1, &gl->vbo);
glDeleteTextures(1, &gl->tex);
}
static void output_frame(struct wl_listener *listener, void *data) {
struct output_state *ostate = wl_container_of(listener, ostate, frame);
struct wlr_output *output = ostate->output;
@ -128,26 +54,8 @@ static void output_frame(struct wl_listener *listener, void *data) {
glViewport(0, 0, width, height);
wlr_output_effective_resolution(output, &width, &height);
wlr_shader_use(s->gl.shader, WL_SHM_FORMAT_RGB332);
glBindVertexArray(s->gl.vao);
glBindBuffer(GL_ARRAY_BUFFER, s->gl.vbo);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, s->gl.ebo);
glActiveTexture(GL_TEXTURE0 + 1);
glBindTexture(GL_TEXTURE_2D, s->gl.tex);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
float world[16], final[16];
wlr_matrix_identity(&final);
wlr_matrix_translate(&world, ostate->x, ostate->y, 0);
wlr_matrix_mul(&final, &world, &final);
wlr_matrix_scale(&world, 128, 128, 1);
wlr_matrix_mul(&final, &world, &final);
wlr_matrix_mul(&output->transform_matrix, &final, &final);
glUniformMatrix4fv(0, 1, GL_TRUE, final);
glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_INT, 0);
wlr_render_quad(s->renderer, s->cat_texture,
&output->transform_matrix, ostate->x, ostate->y);
struct timespec now;
clock_gettime(CLOCK_MONOTONIC, &now);
@ -316,7 +224,10 @@ int main(int argc, char *argv[]) {
return 1;
}
init_gl(&state.gl);
state.renderer = wlr_renderer_init();
state.cat_texture = wlr_surface_init();
wlr_surface_attach_pixels(state.cat_texture, GL_RGB,
cat_tex.width, cat_tex.height, cat_tex.pixel_data);
bool done = false;
struct wl_event_source *timer = wl_event_loop_add_timer(event_loop,
@ -328,8 +239,8 @@ int main(int argc, char *argv[]) {
wl_event_loop_dispatch(event_loop, 0);
}
cleanup_gl(&state.gl);
wlr_renderer_destroy(state.renderer);
wlr_surface_destroy(state.cat_texture);
wl_event_source_remove(timer);
wlr_backend_destroy(wlr);
wlr_session_finish(session);

5
include/render.h
View File

@ -6,7 +6,8 @@
#include <GLES3/gl3.h>
#include <stdbool.h>
struct wlr_texture {
struct wlr_surface {
bool valid;
GLuint tex_id;
uint32_t format;
int width, height;
@ -17,7 +18,7 @@ struct wlr_shader {
uint32_t format;
GLuint vert;
GLuint program;
struct wl_list link;
struct wlr_shader *next;
};
struct wlr_renderer {

12
include/wlr/render.h
View File

@ -4,10 +4,10 @@
#include <wayland-server-protocol.h>
struct wlr_surface;
struct wlr_surface *wlr_surface_create();
void wlr_surface_attach_pixels(struct wlr_surface *tex, uint32_t format,
struct wlr_surface *wlr_surface_init();
void wlr_surface_attach_pixels(struct wlr_surface *surf, uint32_t format,
int width, int height, const unsigned char *pixels);
void wlr_surface_attach_shm(struct wlr_surface *tex, uint32_t format,
void wlr_surface_attach_shm(struct wlr_surface *surf, uint32_t format,
struct wl_shm_buffer *shm);
// TODO: EGL
void wlr_surface_destroy(struct wlr_surface *tex);
@ -23,7 +23,9 @@ struct wlr_renderer;
struct wlr_renderer *wlr_renderer_init();
void wlr_renderer_set_shader(struct wlr_renderer *renderer,
struct wlr_shader *shader);
bool wlr_render_quad(struct wlr_renderer *renderer, struct wlr_surface *tex,
float x, float y, float width, float height);
bool wlr_render_quad(struct wlr_renderer *renderer,
struct wlr_surface *surf, float (*transform)[16],
float x, float y);
void wlr_renderer_destroy(struct wlr_renderer *renderer);
#endif

2
render/CMakeLists.txt
View File

@ -1,4 +1,6 @@
add_library(wlr-render STATIC
matrix.c
shader.c
surface.c
renderer.c
)

138
render/renderer.c Normal file
View File

@ -0,0 +1,138 @@
#include <stdint.h>
#include <stdlib.h>
#include <assert.h>
#include <GLES3/gl3.h>
#include <wayland-util.h>
#include <wayland-server-protocol.h>
#include <wlr/render.h>
#include <wlr/render/matrix.h>
#include <common/log.h>
#include "render.h"
static struct wlr_shader *default_shader = NULL;
static const GLchar vert_src[] =
"uniform mat4 proj;\n"
"attribute vec2 pos;\n"
"attribute vec2 texcoord;\n"
"varying vec2 v_texcoord;\n"
"void main() {\n"
" gl_Position = proj * vec4(pos, 0.0, 1.0);\n"
" v_texcoord = texcoord;\n"
"}\n";
static const GLchar frag_src_RGB[] =
"precision mediump float;\n"
"varying vec2 v_texcoord;\n"
"uniform sampler2D tex;\n"
"void main() {\n"
" gl_FragColor = vec4(texture2D(tex, v_texcoord).rgb, 1.0);\n"
"}\n";
static const GLchar frag_src_RGBA[] =
"precision mediump float;\n"
"varying vec2 v_texcoord;\n"
"uniform sampler2D tex;\n"
"void main() {\n"
" gl_FragColor = texture2D(tex, v_texcoord);\n"
"}\n";
static void default_shader_init() {
if (default_shader) {
return;
}
default_shader = wlr_shader_init(vert_src);
if (!default_shader) {
goto error;
}
if (!wlr_shader_add_format(default_shader, GL_RGB, frag_src_RGB)) {
goto error;
}
if (!wlr_shader_add_format(default_shader, GL_RGBA, frag_src_RGBA)) {
goto error;
}
return;
error:
wlr_shader_destroy(default_shader);
wlr_log(L_ERROR, "Failed to set up default shaders!");
}
static GLuint vao, vbo, ebo;
static void default_quad_init() {
GLfloat verticies[] = {
1, 1, 1, 1, // bottom right
1, 0, 1, 0, // top right
0, 0, 0, 0, // top left
0, 1, 0, 1, // bottom left
};
GLuint indicies[] = {
0, 1, 3,
1, 2, 3,
};
glGenVertexArrays(1, &vao);
glGenBuffers(1, &vbo);
glBindVertexArray(vao);
glBindBuffer(GL_ARRAY_BUFFER, vbo);
glEnableVertexAttribArray(0);
glEnableVertexAttribArray(1);
glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 4 * sizeof(GLfloat), (void *)0);
glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 4 * sizeof(GLfloat), (void *)(2 * sizeof(GLfloat)));
glBufferData(GL_ARRAY_BUFFER, sizeof(verticies), verticies, GL_STATIC_DRAW);
glGenBuffers(1, &ebo);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, ebo);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(indicies), indicies, GL_STATIC_DRAW);
}
static void global_init() {
default_shader_init();
default_quad_init();
}
struct wlr_renderer *wlr_renderer_init() {
global_init();
struct wlr_renderer *r = calloc(sizeof(struct wlr_renderer), 1);
r->shader = default_shader;
return r;
}
void wlr_renderer_set_shader(struct wlr_renderer *renderer,
struct wlr_shader *shader) {
assert(renderer);
renderer->shader = shader;
}
bool wlr_render_quad(struct wlr_renderer *renderer,
struct wlr_surface *surf, float (*transform)[16],
float x, float y) {
assert(renderer && surf && renderer->shader && surf->valid);
wlr_shader_use(renderer->shader, surf->format);
glBindVertexArray(vao);
glBindBuffer(GL_ARRAY_BUFFER, vbo);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, ebo);
glActiveTexture(GL_TEXTURE0 + 1);
glBindTexture(GL_TEXTURE_2D, surf->tex_id);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
float world[16], final[16];
wlr_matrix_identity(&final);
wlr_matrix_translate(&world, x, y, 0);
wlr_matrix_mul(&final, &world, &final);
wlr_matrix_scale(&world, surf->width, surf->height, 1);
wlr_matrix_mul(&final, &world, &final);
wlr_matrix_mul(transform, &final, &final);
glUniformMatrix4fv(0, 1, GL_TRUE, final);
glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_INT, 0);
return false;
}
void wlr_renderer_destroy(struct wlr_renderer *renderer) {
// TODO
}

45
render/shader.c
View File

@ -6,7 +6,6 @@
#include <GLES3/gl3.h>
#include <wlr/render.h>
#include <wlr/render/matrix.h>
#include <wayland-util.h>
#include "render.h"
static bool create_shader(GLenum type, const GLchar *src, GLint len, GLuint *shader) {
@ -44,6 +43,11 @@ bool wlr_shader_add_format(struct wlr_shader *shader, uint32_t format,
if (_shader->valid) {
shader = calloc(sizeof(struct wlr_shader), 1);
shader->vert = _shader->vert;
} else {
while (shader->next) {
_shader = shader;
shader = shader->next;
}
}
shader->format = format;
GLuint _frag;
@ -55,11 +59,10 @@ bool wlr_shader_add_format(struct wlr_shader *shader, uint32_t format,
glAttachShader(shader->program, _frag);
glLinkProgram(shader->program);
glDeleteProgram(_frag);
if (!_shader->valid) {
_shader->valid = true;
} else {
wl_list_insert(&_shader->link, &shader->link);
if (_shader->valid) {
_shader->next = shader;
}
shader->valid = true;
return true;
error:
if (_shader->valid) {
@ -69,32 +72,26 @@ error:
}
bool wlr_shader_use(struct wlr_shader *shader, uint32_t format) {
struct wlr_shader *s = shader;
if (s->format == format) {
glUseProgram(s->program);
if (shader->format == format) {
glUseProgram(shader->program);
return true;
}
if (shader->link.next) {
wl_list_for_each(s, &shader->link, link) {
if (s->format == format) {
glUseProgram(s->program);
return true;
}
while (shader->next) {
shader = shader->next;
if (shader->format == format) {
glUseProgram(shader->program);
return true;
}
}
return false;
}
void wlr_shader_destroy(struct wlr_shader *shader) {
if (!shader) {
return;
while (shader) {
struct wlr_shader *_shader = shader;
glDeleteProgram(shader->vert);
glDeleteProgram(shader->program);
shader = shader->next;
free(_shader);
}
glDeleteProgram(shader->vert);
glDeleteProgram(shader->program);
if (shader->link.next) {
struct wlr_shader *next = wl_container_of(shader->link.next,
next, link);
wlr_shader_destroy(next);
}
free(shader);
}

34
render/surface.c Normal file
View File

@ -0,0 +1,34 @@
#include <stdint.h>
#include <stdlib.h>
#include <assert.h>
#include <GLES3/gl3.h>
#include <wayland-util.h>
#include <wayland-server-protocol.h>
#include <wlr/render.h>
#include <wlr/render/matrix.h>
#include "render.h"
struct wlr_surface *wlr_surface_init() {
return calloc(sizeof(struct wlr_surface), 1);
}
void wlr_surface_attach_pixels(struct wlr_surface *surf, uint32_t format,
int width, int height, const unsigned char *pixels) {
assert(surf);
surf->width = width;
surf->height = height;
surf->format = format;
// TODO: Error handling
glGenTextures(1, &surf->tex_id);
glBindTexture(GL_TEXTURE_2D, surf->tex_id);
glTexImage2D(GL_TEXTURE_2D, 0, format, width, height, 0,
format, GL_UNSIGNED_BYTE, pixels);
surf->valid = true;
}
void wlr_surface_attach_shm(struct wlr_surface *surf, uint32_t format,
struct wl_shm_buffer *shm);
void wlr_surface_destroy(struct wlr_surface *tex) {
// TODO
}