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Add colored quad and ellipse rendering primitives

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This commit is contained in:
Drew DeVault 2017-06-15 15:31:13 -04:00
parent 4a9966b1a4
commit 2443a070e7
8 changed files with 192 additions and 20 deletions
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35
render/gles3/renderer.c
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@ -13,6 +13,8 @@
static struct {
bool initialized;
GLuint rgb, rgba;
GLuint quad;
GLuint ellipse;
} shaders;
static GLuint vao, vbo, ebo;
@ -28,6 +30,9 @@ static bool compile_shader(GLuint type, const GLchar *src, GLuint *shader) {
GL_CALL(glGetShaderiv(*shader, GL_INFO_LOG_LENGTH, &loglen));
GLchar msg[loglen];
GL_CALL(glGetShaderInfoLog(*shader, loglen, &loglen, msg));
wlr_log(L_ERROR, "Shader compilation failed");
wlr_log(L_ERROR, "%s", msg);
exit(1);
return false;
}
return true;
@ -60,6 +65,12 @@ static void init_default_shaders() {
if (!compile_program(vertex_src, fragment_src_RGBA, &shaders.rgba)) {
goto error;
}
if (!compile_program(quad_vertex_src, quad_fragment_src, &shaders.quad)) {
goto error;
}
if (!compile_program(quad_vertex_src, ellipse_fragment_src, &shaders.ellipse)) {
goto error;
}
return;
error:
wlr_log(L_ERROR, "Failed to set up default shaders!");
@ -141,6 +152,28 @@ static bool wlr_gles3_render_surface(struct wlr_renderer_state *state,
return true;
}
static void wlr_gles3_render_quad(struct wlr_renderer_state *state,
const float (*color)[4], const float (*matrix)[16]) {
GL_CALL(glUseProgram(shaders.quad));
GL_CALL(glBindVertexArray(vao));
GL_CALL(glBindBuffer(GL_ARRAY_BUFFER, vbo));
GL_CALL(glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, ebo));
GL_CALL(glUniformMatrix4fv(0, 1, GL_TRUE, *matrix));
GL_CALL(glUniform4f(1, (*color)[0], (*color)[1], (*color)[2], (*color)[3]));
GL_CALL(glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_INT, 0));
}
static void wlr_gles3_render_ellipse(struct wlr_renderer_state *state,
const float (*color)[4], const float (*matrix)[16]) {
GL_CALL(glUseProgram(shaders.ellipse));
GL_CALL(glBindVertexArray(vao));
GL_CALL(glBindBuffer(GL_ARRAY_BUFFER, vbo));
GL_CALL(glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, ebo));
GL_CALL(glUniformMatrix4fv(0, 1, GL_TRUE, *matrix));
GL_CALL(glUniform4f(1, (*color)[0], (*color)[1], (*color)[2], (*color)[3]));
GL_CALL(glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_INT, 0));
}
static void wlr_gles3_destroy(struct wlr_renderer_state *state) {
// no-op
}
@ -150,6 +183,8 @@ static struct wlr_renderer_impl wlr_renderer_impl = {
.end = wlr_gles3_end,
.surface_init = wlr_gles3_surface_init,
.render_with_matrix = wlr_gles3_render_surface,
.render_quad = wlr_gles3_render_quad,
.render_ellipse = wlr_gles3_render_ellipse,
.destroy = wlr_gles3_destroy
};