Reuse some code from the new gl backend
Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
This commit is contained in:
parent
290ec7fb04
commit
061dd8e52e
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@ -16,6 +16,26 @@
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#include "backend/gl/gl_common.h"
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#define P_PAINTREG_START(var) \
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do { \
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region_t reg_new; \
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int nrects; \
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const rect_t *rects; \
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pixman_region32_init_rect(®_new, dx, dy, width, height); \
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pixman_region32_intersect(®_new, ®_new, (region_t *)reg_tgt); \
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rects = pixman_region32_rectangles(®_new, &nrects); \
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glBegin(GL_QUADS); \
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\
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for (int ri = 0; ri < nrects; ++ri) { \
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rect_t var = rects[ri];
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#define P_PAINTREG_END() \
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} \
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glEnd(); \
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pixman_region32_fini(®_new); \
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} \
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while (0)
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struct gl_data {};
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GLuint gl_create_shader(GLenum shader_type, const char *shader_str) {
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@ -144,23 +144,3 @@ static inline void gl_free_blur_shader(gl_blur_shader_t *shader) {
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shader->prog = 0;
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shader->frag_shader = 0;
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}
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#define P_PAINTREG_START(var) \
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do { \
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region_t reg_new; \
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int nrects; \
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const rect_t *rects; \
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pixman_region32_init_rect(®_new, dx, dy, width, height); \
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pixman_region32_intersect(®_new, ®_new, (region_t *)reg_tgt); \
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rects = pixman_region32_rectangles(®_new, &nrects); \
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glBegin(GL_QUADS); \
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\
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for (int ri = 0; ri < nrects; ++ri) { \
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rect_t var = rects[ri];
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#define P_PAINTREG_END() \
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} \
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glEnd(); \
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pixman_region32_fini(®_new); \
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} \
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while (0)
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@ -6,7 +6,9 @@ if get_option('new_backends')
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# enable opengl
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if get_option('opengl')
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srcs += [ files('gl/gl_common.c', 'gl/glx.c') ]
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deps += [ dependency('gl', required: true) ]
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cflags += [ '-DGL_GLEXT_PROTOTYPES' ]
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endif
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endif
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if get_option('opengl')
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srcs += [ files('gl/gl_common.c') ]
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endif
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@ -10,7 +10,7 @@
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#ifdef CONFIG_OPENGL
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#include <GL/glx.h>
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#include "opengl.h"
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#include "backend/gl/gl_common.h"
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#endif
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#include "compiler.h"
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@ -328,7 +328,7 @@ static const struct log_ops glx_string_marker_logger_ops = {
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};
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struct log_target *glx_string_marker_logger_new(void) {
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if (!glx_hasglext("GL_GREMEDY_string_marker")) {
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if (!gl_has_extension("GL_GREMEDY_string_marker")) {
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return NULL;
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}
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169
src/opengl.c
169
src/opengl.c
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@ -24,6 +24,7 @@
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#include "utils.h"
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#include "win.h"
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#include "region.h"
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#include "backend/gl/gl_common.h"
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#include "opengl.h"
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@ -359,7 +360,7 @@ glx_init(session_t *ps, bool need_render) {
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// Check GL_ARB_texture_non_power_of_two, requires a GLX context and
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// must precede FBConfig fetching
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if (need_render)
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psglx->has_texture_non_power_of_two = glx_hasglext(
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psglx->has_texture_non_power_of_two = gl_has_extension(
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"GL_ARB_texture_non_power_of_two");
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// Acquire function addresses
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@ -455,7 +456,7 @@ glx_destroy(session_t *ps) {
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glx_free_prog_main(ps, &ps->glx_prog_win);
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glx_check_err(ps);
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gl_check_err();
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// Free FBConfigs
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for (int i = 0; i <= OPENGL_MAX_DEPTH; ++i) {
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@ -609,7 +610,7 @@ glx_init_blur(session_t *ps) {
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sprintf(pc, FRAG_SHADER_BLUR_SUFFIX, texture_func, sum);
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assert(strlen(shader_str) < len);
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ppass->frag_shader = glx_create_shader(GL_FRAGMENT_SHADER, shader_str);
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ppass->frag_shader = gl_create_shader(GL_FRAGMENT_SHADER, shader_str);
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free(shader_str);
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}
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@ -619,7 +620,7 @@ glx_init_blur(session_t *ps) {
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}
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// Build program
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ppass->prog = glx_create_program(&ppass->frag_shader, 1);
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ppass->prog = gl_create_program(&ppass->frag_shader, 1);
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if (!ppass->prog) {
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log_error("Failed to create GLSL program.");
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return false;
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@ -649,7 +650,7 @@ glx_init_blur(session_t *ps) {
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}
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glx_check_err(ps);
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gl_check_err();
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return true;
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}
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@ -664,7 +665,7 @@ glx_load_prog_main(session_t *ps,
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assert(pprogram);
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// Build program
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pprogram->prog = glx_create_program_from_str(vshader_str, fshader_str);
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pprogram->prog = gl_create_program_from_str(vshader_str, fshader_str);
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if (!pprogram->prog) {
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log_error("Failed to create GLSL program.");
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return false;
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@ -682,7 +683,7 @@ glx_load_prog_main(session_t *ps,
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P_GET_UNIFM_LOC("tex", unifm_tex);
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#undef P_GET_UNIFM_LOC
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glx_check_err(ps);
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gl_check_err();
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return true;
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}
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@ -831,7 +832,7 @@ glx_bind_pixmap(session_t *ps, glx_texture_t **pptex, xcb_pixmap_t pixmap,
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glBindTexture(ptex->target, 0);
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glDisable(ptex->target);
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glx_check_err(ps);
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gl_check_err();
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return true;
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}
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@ -854,7 +855,7 @@ glx_release_pixmap(session_t *ps, glx_texture_t *ptex) {
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ptex->glpixmap = 0;
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}
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glx_check_err(ps);
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gl_check_err();
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}
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/**
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@ -881,7 +882,7 @@ glx_set_clip(session_t *ps, const region_t *reg) {
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rects[0].x2-rects[0].x1, rects[0].y2-rects[0].y1);
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}
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glx_check_err(ps);
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gl_check_err();
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}
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#define P_PAINTREG_START(var) \
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@ -1134,7 +1135,7 @@ glx_blur_dst_end:
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free_glx_bc(ps, pbc);
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}
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glx_check_err(ps);
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gl_check_err();
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return ret;
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}
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@ -1169,7 +1170,7 @@ glx_dim_dst(session_t *ps, int dx, int dy, int width, int height, float z,
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glColor4f(0.0f, 0.0f, 0.0f, 0.0f);
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glDisable(GL_BLEND);
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glx_check_err(ps);
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gl_check_err();
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return true;
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}
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@ -1379,149 +1380,7 @@ glx_render(session_t *ps, const glx_texture_t *ptex,
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if (has_prog)
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glUseProgram(0);
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glx_check_err(ps);
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gl_check_err();
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return true;
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}
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/**
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* @brief Get tightly packed RGB888 data from GL front buffer.
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*
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* Don't expect any sort of decent performance.
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*
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* @returns tightly packed RGB888 data of the size of the screen,
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* to be freed with `free()`
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*/
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unsigned char *
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glx_take_screenshot(session_t *ps, int *out_length) {
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int length = 3 * ps->root_width * ps->root_height;
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GLint unpack_align_old = 0;
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glGetIntegerv(GL_UNPACK_ALIGNMENT, &unpack_align_old);
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assert(unpack_align_old > 0);
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glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
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auto buf = ccalloc(length, unsigned char);
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glReadBuffer(GL_FRONT);
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glReadPixels(0, 0, ps->root_width, ps->root_height, GL_RGB,
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GL_UNSIGNED_BYTE, buf);
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glReadBuffer(GL_BACK);
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glPixelStorei(GL_UNPACK_ALIGNMENT, unpack_align_old);
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if (out_length)
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*out_length = sizeof(unsigned char) * length;
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return buf;
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}
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GLuint
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glx_create_shader(GLenum shader_type, const char *shader_str) {
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log_trace("glx_create_shader(): ===\n%s\n===", shader_str);
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bool success = false;
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GLuint shader = glCreateShader(shader_type);
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if (!shader) {
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log_error("Failed to create shader with type %#x.", shader_type);
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goto glx_create_shader_end;
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}
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glShaderSource(shader, 1, &shader_str, NULL);
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glCompileShader(shader);
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// Get shader status
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{
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GLint status = GL_FALSE;
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glGetShaderiv(shader, GL_COMPILE_STATUS, &status);
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if (GL_FALSE == status) {
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GLint log_len = 0;
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glGetShaderiv(shader, GL_INFO_LOG_LENGTH, &log_len);
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if (log_len) {
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char log[log_len + 1];
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glGetShaderInfoLog(shader, log_len, NULL, log);
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log_error("Failed to compile shader with type %d: %s", shader_type, log);
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}
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goto glx_create_shader_end;
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}
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}
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success = true;
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glx_create_shader_end:
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if (shader && !success) {
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glDeleteShader(shader);
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shader = 0;
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}
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return shader;
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}
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GLuint
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glx_create_program(const GLuint * const shaders, int nshaders) {
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bool success = false;
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GLuint program = glCreateProgram();
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if (!program) {
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log_error("Failed to create program.");
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goto glx_create_program_end;
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}
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for (int i = 0; i < nshaders; ++i)
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glAttachShader(program, shaders[i]);
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glLinkProgram(program);
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// Get program status
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{
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GLint status = GL_FALSE;
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glGetProgramiv(program, GL_LINK_STATUS, &status);
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if (GL_FALSE == status) {
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GLint log_len = 0;
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glGetProgramiv(program, GL_INFO_LOG_LENGTH, &log_len);
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if (log_len) {
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char log[log_len + 1];
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glGetProgramInfoLog(program, log_len, NULL, log);
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log_error("Failed to link program: %s", log);
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}
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goto glx_create_program_end;
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}
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}
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success = true;
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glx_create_program_end:
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if (program) {
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for (int i = 0; i < nshaders; ++i)
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glDetachShader(program, shaders[i]);
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}
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if (program && !success) {
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glDeleteProgram(program);
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program = 0;
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}
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return program;
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}
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/**
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* @brief Create a program from vertex and fragment shader strings.
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*/
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GLuint
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glx_create_program_from_str(const char *vert_shader_str,
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const char *frag_shader_str) {
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GLuint vert_shader = 0;
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GLuint frag_shader = 0;
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GLuint prog = 0;
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if (vert_shader_str)
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vert_shader = glx_create_shader(GL_VERTEX_SHADER, vert_shader_str);
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if (frag_shader_str)
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frag_shader = glx_create_shader(GL_FRAGMENT_SHADER, frag_shader_str);
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GLuint shaders[2];
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unsigned int count = 0;
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if (vert_shader)
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shaders[count++] = vert_shader;
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if (frag_shader)
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shaders[count++] = frag_shader;
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assert(count <= sizeof(shaders) / sizeof(shaders[0]));
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if (count)
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prog = glx_create_program(shaders, count);
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if (vert_shader)
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glDeleteShader(vert_shader);
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if (frag_shader)
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glDeleteShader(frag_shader);
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return prog;
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}
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68
src/opengl.h
68
src/opengl.h
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@ -33,56 +33,6 @@ typedef struct glx_fbconfig {
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bool y_inverted;
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} glx_fbconfig_t;
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#ifdef DEBUG_GLX_ERR
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/**
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* Get a textual representation of an OpenGL error.
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*/
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static inline const char *
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glx_dump_err_str(GLenum err) {
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switch (err) {
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CASESTRRET(GL_NO_ERROR);
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CASESTRRET(GL_INVALID_ENUM);
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CASESTRRET(GL_INVALID_VALUE);
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CASESTRRET(GL_INVALID_OPERATION);
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CASESTRRET(GL_INVALID_FRAMEBUFFER_OPERATION);
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CASESTRRET(GL_OUT_OF_MEMORY);
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CASESTRRET(GL_STACK_UNDERFLOW);
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CASESTRRET(GL_STACK_OVERFLOW);
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}
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return NULL;
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}
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/**
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* Check for GLX error.
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*
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* http://blog.nobel-joergensen.com/2013/01/29/debugging-opengl-using-glgeterror/
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*/
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static inline void
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glx_check_err_(session_t *ps, const char *func, int line) {
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if (!ps->psglx->context) return;
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GLenum err = GL_NO_ERROR;
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while (GL_NO_ERROR != (err = glGetError())) {
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const char *errtext = glx_dump_err_str(err);
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if (errtext) {
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log_printf(tls_logger, LOG_LEVEL_ERROR, func, "GLX error at line %d: %s", line,
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errtext);
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}
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else {
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log_printf(tls_logger, LOG_LEVEL_ERROR, func, "GLX error at line %d: %d", line,
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err);
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}
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}
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}
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#define glx_check_err(ps) glx_check_err_(ps, __func__, __LINE__)
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#else
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#define glx_check_err(ps) ((void) 0)
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#endif
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/**
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* Check if a word is in string.
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*/
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@ -123,24 +73,6 @@ glx_hasglxext(session_t *ps, const char *ext) {
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return found;
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}
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/**
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* Check if a GLX extension exists.
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*/
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static inline bool
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glx_hasglext(const char *ext) {
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const char *gl_exts = (const char *) glGetString(GL_EXTENSIONS);
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if (!gl_exts) {
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log_error("Failed get GL extension list.");
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return false;
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}
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bool found = wd_is_in_str(gl_exts, ext);
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if (!found)
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log_info("Missing GL extension %s.", ext);
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return found;
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}
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bool
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glx_dim_dst(session_t *ps, int dx, int dy, int width, int height, float z,
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GLfloat factor, const region_t *reg_tgt);
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