869 lines
25 KiB
C
869 lines
25 KiB
C
#include <assert.h>
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#include <drm_fourcc.h>
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#include <GLES2/gl2.h>
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#include <GLES2/gl2ext.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <wayland-server-protocol.h>
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#include <wayland-util.h>
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#include <wlr/render/egl.h>
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#include <wlr/render/interface.h>
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#include <wlr/render/wlr_renderer.h>
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#include <wlr/types/wlr_matrix.h>
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#include <wlr/util/box.h>
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#include <wlr/util/log.h>
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#include "render/egl.h"
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#include "render/gles2.h"
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#include "render/pixel_format.h"
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#include "types/wlr_matrix.h"
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#include "common_vert_src.h"
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#include "quad_frag_src.h"
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#include "tex_rgba_frag_src.h"
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#include "tex_rgbx_frag_src.h"
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#include "tex_external_frag_src.h"
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static const GLfloat verts[] = {
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1, 0, // top right
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0, 0, // top left
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1, 1, // bottom right
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0, 1, // bottom left
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};
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static const struct wlr_renderer_impl renderer_impl;
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bool wlr_renderer_is_gles2(struct wlr_renderer *wlr_renderer) {
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return wlr_renderer->impl == &renderer_impl;
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}
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struct wlr_gles2_renderer *gles2_get_renderer(
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struct wlr_renderer *wlr_renderer) {
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assert(wlr_renderer_is_gles2(wlr_renderer));
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return (struct wlr_gles2_renderer *)wlr_renderer;
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}
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static struct wlr_gles2_renderer *gles2_get_renderer_in_context(
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struct wlr_renderer *wlr_renderer) {
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struct wlr_gles2_renderer *renderer = gles2_get_renderer(wlr_renderer);
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assert(wlr_egl_is_current(renderer->egl));
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assert(renderer->current_buffer != NULL);
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return renderer;
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}
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static void destroy_buffer(struct wlr_gles2_buffer *buffer) {
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wl_list_remove(&buffer->link);
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wlr_addon_finish(&buffer->addon);
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struct wlr_egl_context prev_ctx;
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wlr_egl_save_context(&prev_ctx);
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wlr_egl_make_current(buffer->renderer->egl);
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push_gles2_debug(buffer->renderer);
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glDeleteFramebuffers(1, &buffer->fbo);
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glDeleteRenderbuffers(1, &buffer->rbo);
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pop_gles2_debug(buffer->renderer);
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wlr_egl_destroy_image(buffer->renderer->egl, buffer->image);
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wlr_egl_restore_context(&prev_ctx);
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free(buffer);
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}
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static void handle_buffer_destroy(struct wlr_addon *addon) {
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struct wlr_gles2_buffer *buffer =
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wl_container_of(addon, buffer, addon);
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destroy_buffer(buffer);
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}
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static const struct wlr_addon_interface buffer_addon_impl = {
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.name = "wlr_gles2_buffer",
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.destroy = handle_buffer_destroy,
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};
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static struct wlr_gles2_buffer *get_buffer(struct wlr_gles2_renderer *renderer,
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struct wlr_buffer *wlr_buffer) {
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struct wlr_addon *addon =
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wlr_addon_find(&wlr_buffer->addons, renderer, &buffer_addon_impl);
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if (addon == NULL) {
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return NULL;
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}
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struct wlr_gles2_buffer *buffer = wl_container_of(addon, buffer, addon);
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return buffer;
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}
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static struct wlr_gles2_buffer *create_buffer(struct wlr_gles2_renderer *renderer,
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struct wlr_buffer *wlr_buffer) {
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struct wlr_gles2_buffer *buffer = calloc(1, sizeof(*buffer));
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if (buffer == NULL) {
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wlr_log_errno(WLR_ERROR, "Allocation failed");
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return NULL;
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}
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buffer->buffer = wlr_buffer;
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buffer->renderer = renderer;
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struct wlr_dmabuf_attributes dmabuf = {0};
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if (!wlr_buffer_get_dmabuf(wlr_buffer, &dmabuf)) {
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goto error_buffer;
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}
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bool external_only;
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buffer->image = wlr_egl_create_image_from_dmabuf(renderer->egl,
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&dmabuf, &external_only);
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if (buffer->image == EGL_NO_IMAGE_KHR) {
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goto error_buffer;
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}
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push_gles2_debug(renderer);
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glGenRenderbuffers(1, &buffer->rbo);
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glBindRenderbuffer(GL_RENDERBUFFER, buffer->rbo);
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renderer->procs.glEGLImageTargetRenderbufferStorageOES(GL_RENDERBUFFER,
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buffer->image);
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glBindRenderbuffer(GL_RENDERBUFFER, 0);
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glGenFramebuffers(1, &buffer->fbo);
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glBindFramebuffer(GL_FRAMEBUFFER, buffer->fbo);
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glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
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GL_RENDERBUFFER, buffer->rbo);
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GLenum fb_status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
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glBindFramebuffer(GL_FRAMEBUFFER, 0);
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pop_gles2_debug(renderer);
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if (fb_status != GL_FRAMEBUFFER_COMPLETE) {
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wlr_log(WLR_ERROR, "Failed to create FBO");
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goto error_image;
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}
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wlr_addon_init(&buffer->addon, &wlr_buffer->addons, renderer,
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&buffer_addon_impl);
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wl_list_insert(&renderer->buffers, &buffer->link);
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wlr_log(WLR_DEBUG, "Created GL FBO for buffer %dx%d",
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wlr_buffer->width, wlr_buffer->height);
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return buffer;
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error_image:
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wlr_egl_destroy_image(renderer->egl, buffer->image);
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error_buffer:
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free(buffer);
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return NULL;
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}
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static bool gles2_bind_buffer(struct wlr_renderer *wlr_renderer,
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struct wlr_buffer *wlr_buffer) {
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struct wlr_gles2_renderer *renderer = gles2_get_renderer(wlr_renderer);
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if (renderer->current_buffer != NULL) {
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assert(wlr_egl_is_current(renderer->egl));
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push_gles2_debug(renderer);
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glFlush();
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glBindFramebuffer(GL_FRAMEBUFFER, 0);
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pop_gles2_debug(renderer);
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wlr_buffer_unlock(renderer->current_buffer->buffer);
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renderer->current_buffer = NULL;
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}
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if (wlr_buffer == NULL) {
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wlr_egl_unset_current(renderer->egl);
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return true;
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}
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wlr_egl_make_current(renderer->egl);
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struct wlr_gles2_buffer *buffer = get_buffer(renderer, wlr_buffer);
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if (buffer == NULL) {
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buffer = create_buffer(renderer, wlr_buffer);
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}
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if (buffer == NULL) {
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return false;
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}
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wlr_buffer_lock(wlr_buffer);
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renderer->current_buffer = buffer;
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push_gles2_debug(renderer);
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glBindFramebuffer(GL_FRAMEBUFFER, renderer->current_buffer->fbo);
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pop_gles2_debug(renderer);
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return true;
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}
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static bool gles2_begin(struct wlr_renderer *wlr_renderer, uint32_t width,
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uint32_t height) {
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struct wlr_gles2_renderer *renderer =
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gles2_get_renderer_in_context(wlr_renderer);
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push_gles2_debug(renderer);
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glViewport(0, 0, width, height);
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renderer->viewport_width = width;
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renderer->viewport_height = height;
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// refresh projection matrix
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matrix_projection(renderer->projection, width, height,
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WL_OUTPUT_TRANSFORM_FLIPPED_180);
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glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
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// XXX: maybe we should save output projection and remove some of the need
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// for users to sling matricies themselves
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pop_gles2_debug(renderer);
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return true;
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}
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static void gles2_end(struct wlr_renderer *wlr_renderer) {
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gles2_get_renderer_in_context(wlr_renderer);
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// no-op
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}
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static void gles2_clear(struct wlr_renderer *wlr_renderer,
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const float color[static 4]) {
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struct wlr_gles2_renderer *renderer =
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gles2_get_renderer_in_context(wlr_renderer);
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push_gles2_debug(renderer);
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glClearColor(color[0], color[1], color[2], color[3]);
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glClear(GL_COLOR_BUFFER_BIT);
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pop_gles2_debug(renderer);
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}
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static void gles2_scissor(struct wlr_renderer *wlr_renderer,
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struct wlr_box *box) {
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struct wlr_gles2_renderer *renderer =
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gles2_get_renderer_in_context(wlr_renderer);
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push_gles2_debug(renderer);
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if (box != NULL) {
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glScissor(box->x, box->y, box->width, box->height);
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glEnable(GL_SCISSOR_TEST);
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} else {
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glDisable(GL_SCISSOR_TEST);
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}
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pop_gles2_debug(renderer);
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}
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static bool gles2_render_subtexture_with_matrix(
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struct wlr_renderer *wlr_renderer, struct wlr_texture *wlr_texture,
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const struct wlr_fbox *box, const float matrix[static 9],
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float alpha) {
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struct wlr_gles2_renderer *renderer =
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gles2_get_renderer_in_context(wlr_renderer);
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struct wlr_gles2_texture *texture =
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gles2_get_texture(wlr_texture);
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assert(texture->renderer == renderer);
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struct wlr_gles2_tex_shader *shader = NULL;
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switch (texture->target) {
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case GL_TEXTURE_2D:
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if (texture->has_alpha) {
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shader = &renderer->shaders.tex_rgba;
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} else {
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shader = &renderer->shaders.tex_rgbx;
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}
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break;
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case GL_TEXTURE_EXTERNAL_OES:
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// EGL_EXT_image_dma_buf_import_modifiers requires
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// GL_OES_EGL_image_external
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assert(renderer->exts.OES_egl_image_external);
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shader = &renderer->shaders.tex_ext;
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break;
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default:
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abort();
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}
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float gl_matrix[9];
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wlr_matrix_multiply(gl_matrix, renderer->projection, matrix);
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// OpenGL ES 2 requires the glUniformMatrix3fv transpose parameter to be set
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// to GL_FALSE
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wlr_matrix_transpose(gl_matrix, gl_matrix);
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push_gles2_debug(renderer);
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if (!texture->has_alpha && alpha == 1.0) {
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glDisable(GL_BLEND);
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} else {
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glEnable(GL_BLEND);
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}
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glActiveTexture(GL_TEXTURE0);
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glBindTexture(texture->target, texture->tex);
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glTexParameteri(texture->target, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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glUseProgram(shader->program);
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glUniformMatrix3fv(shader->proj, 1, GL_FALSE, gl_matrix);
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glUniform1i(shader->tex, 0);
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glUniform1f(shader->alpha, alpha);
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const GLfloat x1 = box->x / wlr_texture->width;
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const GLfloat y1 = box->y / wlr_texture->height;
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const GLfloat x2 = (box->x + box->width) / wlr_texture->width;
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const GLfloat y2 = (box->y + box->height) / wlr_texture->height;
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const GLfloat texcoord[] = {
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x2, y1, // top right
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x1, y1, // top left
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x2, y2, // bottom right
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x1, y2, // bottom left
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};
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glVertexAttribPointer(shader->pos_attrib, 2, GL_FLOAT, GL_FALSE, 0, verts);
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glVertexAttribPointer(shader->tex_attrib, 2, GL_FLOAT, GL_FALSE, 0, texcoord);
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glEnableVertexAttribArray(shader->pos_attrib);
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glEnableVertexAttribArray(shader->tex_attrib);
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glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
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glDisableVertexAttribArray(shader->pos_attrib);
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glDisableVertexAttribArray(shader->tex_attrib);
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glBindTexture(texture->target, 0);
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pop_gles2_debug(renderer);
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return true;
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}
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static void gles2_render_quad_with_matrix(struct wlr_renderer *wlr_renderer,
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const float color[static 4], const float matrix[static 9]) {
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struct wlr_gles2_renderer *renderer =
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gles2_get_renderer_in_context(wlr_renderer);
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float gl_matrix[9];
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wlr_matrix_multiply(gl_matrix, renderer->projection, matrix);
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// OpenGL ES 2 requires the glUniformMatrix3fv transpose parameter to be set
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// to GL_FALSE
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wlr_matrix_transpose(gl_matrix, gl_matrix);
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push_gles2_debug(renderer);
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if (color[3] == 1.0) {
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glDisable(GL_BLEND);
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} else {
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glEnable(GL_BLEND);
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}
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glUseProgram(renderer->shaders.quad.program);
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glUniformMatrix3fv(renderer->shaders.quad.proj, 1, GL_FALSE, gl_matrix);
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glUniform4f(renderer->shaders.quad.color, color[0], color[1], color[2], color[3]);
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glVertexAttribPointer(renderer->shaders.quad.pos_attrib, 2, GL_FLOAT, GL_FALSE,
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0, verts);
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glEnableVertexAttribArray(renderer->shaders.quad.pos_attrib);
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glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
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glDisableVertexAttribArray(renderer->shaders.quad.pos_attrib);
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pop_gles2_debug(renderer);
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}
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static const uint32_t *gles2_get_shm_texture_formats(
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struct wlr_renderer *wlr_renderer, size_t *len) {
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struct wlr_gles2_renderer *renderer = gles2_get_renderer(wlr_renderer);
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return get_gles2_shm_formats(renderer, len);
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}
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static const struct wlr_drm_format_set *gles2_get_dmabuf_texture_formats(
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struct wlr_renderer *wlr_renderer) {
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struct wlr_gles2_renderer *renderer = gles2_get_renderer(wlr_renderer);
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return wlr_egl_get_dmabuf_texture_formats(renderer->egl);
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}
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static const struct wlr_drm_format_set *gles2_get_render_formats(
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struct wlr_renderer *wlr_renderer) {
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struct wlr_gles2_renderer *renderer = gles2_get_renderer(wlr_renderer);
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return wlr_egl_get_dmabuf_render_formats(renderer->egl);
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}
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static uint32_t gles2_preferred_read_format(
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struct wlr_renderer *wlr_renderer) {
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struct wlr_gles2_renderer *renderer =
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gles2_get_renderer_in_context(wlr_renderer);
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push_gles2_debug(renderer);
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GLint gl_format = -1, gl_type = -1, alpha_size = -1;
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glGetIntegerv(GL_IMPLEMENTATION_COLOR_READ_FORMAT, &gl_format);
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glGetIntegerv(GL_IMPLEMENTATION_COLOR_READ_TYPE, &gl_type);
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glGetIntegerv(GL_ALPHA_BITS, &alpha_size);
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pop_gles2_debug(renderer);
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const struct wlr_gles2_pixel_format *fmt =
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get_gles2_format_from_gl(gl_format, gl_type, alpha_size > 0);
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if (fmt != NULL) {
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return fmt->drm_format;
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}
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if (renderer->exts.EXT_read_format_bgra) {
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return DRM_FORMAT_XRGB8888;
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}
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return DRM_FORMAT_XBGR8888;
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}
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static bool gles2_read_pixels(struct wlr_renderer *wlr_renderer,
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uint32_t drm_format, uint32_t stride,
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uint32_t width, uint32_t height, uint32_t src_x, uint32_t src_y,
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uint32_t dst_x, uint32_t dst_y, void *data) {
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struct wlr_gles2_renderer *renderer =
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gles2_get_renderer_in_context(wlr_renderer);
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const struct wlr_gles2_pixel_format *fmt =
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get_gles2_format_from_drm(drm_format);
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if (fmt == NULL || !is_gles2_pixel_format_supported(renderer, fmt)) {
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wlr_log(WLR_ERROR, "Cannot read pixels: unsupported pixel format 0x%"PRIX32, drm_format);
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return false;
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}
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if (fmt->gl_format == GL_BGRA_EXT && !renderer->exts.EXT_read_format_bgra) {
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wlr_log(WLR_ERROR,
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"Cannot read pixels: missing GL_EXT_read_format_bgra extension");
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return false;
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}
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const struct wlr_pixel_format_info *drm_fmt =
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drm_get_pixel_format_info(fmt->drm_format);
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assert(drm_fmt);
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push_gles2_debug(renderer);
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// Make sure any pending drawing is finished before we try to read it
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glFinish();
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glGetError(); // Clear the error flag
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unsigned char *p = (unsigned char *)data + dst_y * stride;
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uint32_t pack_stride = width * drm_fmt->bpp / 8;
|
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if (pack_stride == stride && dst_x == 0) {
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// Under these particular conditions, we can read the pixels with only
|
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// one glReadPixels call
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glReadPixels(src_x, src_y, width, height, fmt->gl_format, fmt->gl_type, p);
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} else {
|
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// Unfortunately GLES2 doesn't support GL_PACK_*, so we have to read
|
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// the lines out row by row
|
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for (size_t i = 0; i < height; ++i) {
|
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uint32_t y = src_y + i;
|
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glReadPixels(src_x, y, width, 1, fmt->gl_format,
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fmt->gl_type, p + i * stride + dst_x * drm_fmt->bpp / 8);
|
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}
|
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}
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|
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pop_gles2_debug(renderer);
|
|
|
|
return glGetError() == GL_NO_ERROR;
|
|
}
|
|
|
|
static int gles2_get_drm_fd(struct wlr_renderer *wlr_renderer) {
|
|
struct wlr_gles2_renderer *renderer =
|
|
gles2_get_renderer(wlr_renderer);
|
|
|
|
if (renderer->drm_fd < 0) {
|
|
renderer->drm_fd = wlr_egl_dup_drm_fd(renderer->egl);
|
|
}
|
|
|
|
return renderer->drm_fd;
|
|
}
|
|
|
|
static uint32_t gles2_get_render_buffer_caps(struct wlr_renderer *wlr_renderer) {
|
|
return WLR_BUFFER_CAP_DMABUF;
|
|
}
|
|
|
|
struct wlr_egl *wlr_gles2_renderer_get_egl(struct wlr_renderer *wlr_renderer) {
|
|
struct wlr_gles2_renderer *renderer =
|
|
gles2_get_renderer(wlr_renderer);
|
|
return renderer->egl;
|
|
}
|
|
|
|
static void gles2_destroy(struct wlr_renderer *wlr_renderer) {
|
|
struct wlr_gles2_renderer *renderer = gles2_get_renderer(wlr_renderer);
|
|
|
|
wlr_egl_make_current(renderer->egl);
|
|
|
|
struct wlr_gles2_buffer *buffer, *buffer_tmp;
|
|
wl_list_for_each_safe(buffer, buffer_tmp, &renderer->buffers, link) {
|
|
destroy_buffer(buffer);
|
|
}
|
|
|
|
struct wlr_gles2_texture *tex, *tex_tmp;
|
|
wl_list_for_each_safe(tex, tex_tmp, &renderer->textures, link) {
|
|
gles2_texture_destroy(tex);
|
|
}
|
|
|
|
push_gles2_debug(renderer);
|
|
glDeleteProgram(renderer->shaders.quad.program);
|
|
glDeleteProgram(renderer->shaders.tex_rgba.program);
|
|
glDeleteProgram(renderer->shaders.tex_rgbx.program);
|
|
glDeleteProgram(renderer->shaders.tex_ext.program);
|
|
pop_gles2_debug(renderer);
|
|
|
|
if (renderer->exts.KHR_debug) {
|
|
glDisable(GL_DEBUG_OUTPUT_KHR);
|
|
renderer->procs.glDebugMessageCallbackKHR(NULL, NULL);
|
|
}
|
|
|
|
wlr_egl_unset_current(renderer->egl);
|
|
wlr_egl_destroy(renderer->egl);
|
|
|
|
if (renderer->drm_fd >= 0) {
|
|
close(renderer->drm_fd);
|
|
}
|
|
|
|
free(renderer);
|
|
}
|
|
|
|
static const struct wlr_renderer_impl renderer_impl = {
|
|
.destroy = gles2_destroy,
|
|
.bind_buffer = gles2_bind_buffer,
|
|
.begin = gles2_begin,
|
|
.end = gles2_end,
|
|
.clear = gles2_clear,
|
|
.scissor = gles2_scissor,
|
|
.render_subtexture_with_matrix = gles2_render_subtexture_with_matrix,
|
|
.render_quad_with_matrix = gles2_render_quad_with_matrix,
|
|
.get_shm_texture_formats = gles2_get_shm_texture_formats,
|
|
.get_dmabuf_texture_formats = gles2_get_dmabuf_texture_formats,
|
|
.get_render_formats = gles2_get_render_formats,
|
|
.preferred_read_format = gles2_preferred_read_format,
|
|
.read_pixels = gles2_read_pixels,
|
|
.get_drm_fd = gles2_get_drm_fd,
|
|
.get_render_buffer_caps = gles2_get_render_buffer_caps,
|
|
.texture_from_buffer = gles2_texture_from_buffer,
|
|
};
|
|
|
|
void push_gles2_debug_(struct wlr_gles2_renderer *renderer,
|
|
const char *file, const char *func) {
|
|
if (!renderer->procs.glPushDebugGroupKHR) {
|
|
return;
|
|
}
|
|
|
|
int len = snprintf(NULL, 0, "%s:%s", file, func) + 1;
|
|
char str[len];
|
|
snprintf(str, len, "%s:%s", file, func);
|
|
renderer->procs.glPushDebugGroupKHR(GL_DEBUG_SOURCE_APPLICATION_KHR, 1, -1, str);
|
|
}
|
|
|
|
void pop_gles2_debug(struct wlr_gles2_renderer *renderer) {
|
|
if (renderer->procs.glPopDebugGroupKHR) {
|
|
renderer->procs.glPopDebugGroupKHR();
|
|
}
|
|
}
|
|
|
|
static enum wlr_log_importance gles2_log_importance_to_wlr(GLenum type) {
|
|
switch (type) {
|
|
case GL_DEBUG_TYPE_ERROR_KHR: return WLR_ERROR;
|
|
case GL_DEBUG_TYPE_DEPRECATED_BEHAVIOR_KHR: return WLR_DEBUG;
|
|
case GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR_KHR: return WLR_ERROR;
|
|
case GL_DEBUG_TYPE_PORTABILITY_KHR: return WLR_DEBUG;
|
|
case GL_DEBUG_TYPE_PERFORMANCE_KHR: return WLR_DEBUG;
|
|
case GL_DEBUG_TYPE_OTHER_KHR: return WLR_DEBUG;
|
|
case GL_DEBUG_TYPE_MARKER_KHR: return WLR_DEBUG;
|
|
case GL_DEBUG_TYPE_PUSH_GROUP_KHR: return WLR_DEBUG;
|
|
case GL_DEBUG_TYPE_POP_GROUP_KHR: return WLR_DEBUG;
|
|
default: return WLR_DEBUG;
|
|
}
|
|
}
|
|
|
|
static void gles2_log(GLenum src, GLenum type, GLuint id, GLenum severity,
|
|
GLsizei len, const GLchar *msg, const void *user) {
|
|
_wlr_log(gles2_log_importance_to_wlr(type), "[GLES2] %s", msg);
|
|
}
|
|
|
|
static GLuint compile_shader(struct wlr_gles2_renderer *renderer,
|
|
GLuint type, const GLchar *src) {
|
|
push_gles2_debug(renderer);
|
|
|
|
GLuint shader = glCreateShader(type);
|
|
glShaderSource(shader, 1, &src, NULL);
|
|
glCompileShader(shader);
|
|
|
|
GLint ok;
|
|
glGetShaderiv(shader, GL_COMPILE_STATUS, &ok);
|
|
if (ok == GL_FALSE) {
|
|
wlr_log(WLR_ERROR, "Failed to compile shader");
|
|
glDeleteShader(shader);
|
|
shader = 0;
|
|
}
|
|
|
|
pop_gles2_debug(renderer);
|
|
return shader;
|
|
}
|
|
|
|
static GLuint link_program(struct wlr_gles2_renderer *renderer,
|
|
const GLchar *vert_src, const GLchar *frag_src) {
|
|
push_gles2_debug(renderer);
|
|
|
|
GLuint vert = compile_shader(renderer, GL_VERTEX_SHADER, vert_src);
|
|
if (!vert) {
|
|
goto error;
|
|
}
|
|
|
|
GLuint frag = compile_shader(renderer, GL_FRAGMENT_SHADER, frag_src);
|
|
if (!frag) {
|
|
glDeleteShader(vert);
|
|
goto error;
|
|
}
|
|
|
|
GLuint prog = glCreateProgram();
|
|
glAttachShader(prog, vert);
|
|
glAttachShader(prog, frag);
|
|
glLinkProgram(prog);
|
|
|
|
glDetachShader(prog, vert);
|
|
glDetachShader(prog, frag);
|
|
glDeleteShader(vert);
|
|
glDeleteShader(frag);
|
|
|
|
GLint ok;
|
|
glGetProgramiv(prog, GL_LINK_STATUS, &ok);
|
|
if (ok == GL_FALSE) {
|
|
wlr_log(WLR_ERROR, "Failed to link shader");
|
|
glDeleteProgram(prog);
|
|
goto error;
|
|
}
|
|
|
|
pop_gles2_debug(renderer);
|
|
return prog;
|
|
|
|
error:
|
|
pop_gles2_debug(renderer);
|
|
return 0;
|
|
}
|
|
|
|
static bool check_gl_ext(const char *exts, const char *ext) {
|
|
size_t extlen = strlen(ext);
|
|
const char *end = exts + strlen(exts);
|
|
|
|
while (exts < end) {
|
|
if (exts[0] == ' ') {
|
|
exts++;
|
|
continue;
|
|
}
|
|
size_t n = strcspn(exts, " ");
|
|
if (n == extlen && strncmp(ext, exts, n) == 0) {
|
|
return true;
|
|
}
|
|
exts += n;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static void load_gl_proc(void *proc_ptr, const char *name) {
|
|
void *proc = (void *)eglGetProcAddress(name);
|
|
if (proc == NULL) {
|
|
wlr_log(WLR_ERROR, "eglGetProcAddress(%s) failed", name);
|
|
abort();
|
|
}
|
|
*(void **)proc_ptr = proc;
|
|
}
|
|
|
|
struct wlr_renderer *wlr_gles2_renderer_create_with_drm_fd(int drm_fd) {
|
|
struct wlr_egl *egl = wlr_egl_create_with_drm_fd(drm_fd);
|
|
if (egl == NULL) {
|
|
wlr_log(WLR_ERROR, "Could not initialize EGL");
|
|
return NULL;
|
|
}
|
|
|
|
struct wlr_renderer *renderer = wlr_gles2_renderer_create(egl);
|
|
if (!renderer) {
|
|
wlr_log(WLR_ERROR, "Failed to create GLES2 renderer");
|
|
wlr_egl_destroy(egl);
|
|
return NULL;
|
|
}
|
|
|
|
return renderer;
|
|
}
|
|
|
|
struct wlr_renderer *wlr_gles2_renderer_create(struct wlr_egl *egl) {
|
|
if (!wlr_egl_make_current(egl)) {
|
|
return NULL;
|
|
}
|
|
|
|
const char *exts_str = (const char *)glGetString(GL_EXTENSIONS);
|
|
if (exts_str == NULL) {
|
|
wlr_log(WLR_ERROR, "Failed to get GL_EXTENSIONS");
|
|
return NULL;
|
|
}
|
|
|
|
struct wlr_gles2_renderer *renderer =
|
|
calloc(1, sizeof(struct wlr_gles2_renderer));
|
|
if (renderer == NULL) {
|
|
return NULL;
|
|
}
|
|
wlr_renderer_init(&renderer->wlr_renderer, &renderer_impl);
|
|
|
|
wl_list_init(&renderer->buffers);
|
|
wl_list_init(&renderer->textures);
|
|
|
|
renderer->egl = egl;
|
|
renderer->exts_str = exts_str;
|
|
renderer->drm_fd = -1;
|
|
|
|
wlr_log(WLR_INFO, "Creating GLES2 renderer");
|
|
wlr_log(WLR_INFO, "Using %s", glGetString(GL_VERSION));
|
|
wlr_log(WLR_INFO, "GL vendor: %s", glGetString(GL_VENDOR));
|
|
wlr_log(WLR_INFO, "GL renderer: %s", glGetString(GL_RENDERER));
|
|
wlr_log(WLR_INFO, "Supported GLES2 extensions: %s", exts_str);
|
|
|
|
if (!renderer->egl->exts.EXT_image_dma_buf_import) {
|
|
wlr_log(WLR_ERROR, "EGL_EXT_image_dma_buf_import not supported");
|
|
free(renderer);
|
|
return NULL;
|
|
}
|
|
if (!check_gl_ext(exts_str, "GL_EXT_texture_format_BGRA8888")) {
|
|
wlr_log(WLR_ERROR, "BGRA8888 format not supported by GLES2");
|
|
free(renderer);
|
|
return NULL;
|
|
}
|
|
if (!check_gl_ext(exts_str, "GL_EXT_unpack_subimage")) {
|
|
wlr_log(WLR_ERROR, "GL_EXT_unpack_subimage not supported");
|
|
free(renderer);
|
|
return NULL;
|
|
}
|
|
|
|
renderer->exts.EXT_read_format_bgra =
|
|
check_gl_ext(exts_str, "GL_EXT_read_format_bgra");
|
|
|
|
renderer->exts.EXT_texture_type_2_10_10_10_REV =
|
|
check_gl_ext(exts_str, "GL_EXT_texture_type_2_10_10_10_REV");
|
|
|
|
renderer->exts.OES_texture_half_float_linear =
|
|
check_gl_ext(exts_str, "GL_OES_texture_half_float_linear");
|
|
|
|
renderer->exts.EXT_texture_norm16 =
|
|
check_gl_ext(exts_str, "GL_EXT_texture_norm16");
|
|
|
|
if (check_gl_ext(exts_str, "GL_KHR_debug")) {
|
|
renderer->exts.KHR_debug = true;
|
|
load_gl_proc(&renderer->procs.glDebugMessageCallbackKHR,
|
|
"glDebugMessageCallbackKHR");
|
|
load_gl_proc(&renderer->procs.glDebugMessageControlKHR,
|
|
"glDebugMessageControlKHR");
|
|
}
|
|
|
|
if (check_gl_ext(exts_str, "GL_OES_EGL_image_external")) {
|
|
renderer->exts.OES_egl_image_external = true;
|
|
load_gl_proc(&renderer->procs.glEGLImageTargetTexture2DOES,
|
|
"glEGLImageTargetTexture2DOES");
|
|
}
|
|
|
|
if (check_gl_ext(exts_str, "GL_OES_EGL_image")) {
|
|
renderer->exts.OES_egl_image = true;
|
|
load_gl_proc(&renderer->procs.glEGLImageTargetRenderbufferStorageOES,
|
|
"glEGLImageTargetRenderbufferStorageOES");
|
|
}
|
|
|
|
if (renderer->exts.KHR_debug) {
|
|
glEnable(GL_DEBUG_OUTPUT_KHR);
|
|
glEnable(GL_DEBUG_OUTPUT_SYNCHRONOUS_KHR);
|
|
renderer->procs.glDebugMessageCallbackKHR(gles2_log, NULL);
|
|
|
|
// Silence unwanted message types
|
|
renderer->procs.glDebugMessageControlKHR(GL_DONT_CARE,
|
|
GL_DEBUG_TYPE_POP_GROUP_KHR, GL_DONT_CARE, 0, NULL, GL_FALSE);
|
|
renderer->procs.glDebugMessageControlKHR(GL_DONT_CARE,
|
|
GL_DEBUG_TYPE_PUSH_GROUP_KHR, GL_DONT_CARE, 0, NULL, GL_FALSE);
|
|
}
|
|
|
|
push_gles2_debug(renderer);
|
|
|
|
GLuint prog;
|
|
renderer->shaders.quad.program = prog =
|
|
link_program(renderer, common_vert_src, quad_frag_src);
|
|
if (!renderer->shaders.quad.program) {
|
|
goto error;
|
|
}
|
|
renderer->shaders.quad.proj = glGetUniformLocation(prog, "proj");
|
|
renderer->shaders.quad.color = glGetUniformLocation(prog, "color");
|
|
renderer->shaders.quad.pos_attrib = glGetAttribLocation(prog, "pos");
|
|
|
|
renderer->shaders.tex_rgba.program = prog =
|
|
link_program(renderer, common_vert_src, tex_rgba_frag_src);
|
|
if (!renderer->shaders.tex_rgba.program) {
|
|
goto error;
|
|
}
|
|
renderer->shaders.tex_rgba.proj = glGetUniformLocation(prog, "proj");
|
|
renderer->shaders.tex_rgba.tex = glGetUniformLocation(prog, "tex");
|
|
renderer->shaders.tex_rgba.alpha = glGetUniformLocation(prog, "alpha");
|
|
renderer->shaders.tex_rgba.pos_attrib = glGetAttribLocation(prog, "pos");
|
|
renderer->shaders.tex_rgba.tex_attrib = glGetAttribLocation(prog, "texcoord");
|
|
|
|
renderer->shaders.tex_rgbx.program = prog =
|
|
link_program(renderer, common_vert_src, tex_rgbx_frag_src);
|
|
if (!renderer->shaders.tex_rgbx.program) {
|
|
goto error;
|
|
}
|
|
renderer->shaders.tex_rgbx.proj = glGetUniformLocation(prog, "proj");
|
|
renderer->shaders.tex_rgbx.tex = glGetUniformLocation(prog, "tex");
|
|
renderer->shaders.tex_rgbx.alpha = glGetUniformLocation(prog, "alpha");
|
|
renderer->shaders.tex_rgbx.pos_attrib = glGetAttribLocation(prog, "pos");
|
|
renderer->shaders.tex_rgbx.tex_attrib = glGetAttribLocation(prog, "texcoord");
|
|
|
|
if (renderer->exts.OES_egl_image_external) {
|
|
renderer->shaders.tex_ext.program = prog =
|
|
link_program(renderer, common_vert_src, tex_external_frag_src);
|
|
if (!renderer->shaders.tex_ext.program) {
|
|
goto error;
|
|
}
|
|
renderer->shaders.tex_ext.proj = glGetUniformLocation(prog, "proj");
|
|
renderer->shaders.tex_ext.tex = glGetUniformLocation(prog, "tex");
|
|
renderer->shaders.tex_ext.alpha = glGetUniformLocation(prog, "alpha");
|
|
renderer->shaders.tex_ext.pos_attrib = glGetAttribLocation(prog, "pos");
|
|
renderer->shaders.tex_ext.tex_attrib = glGetAttribLocation(prog, "texcoord");
|
|
}
|
|
|
|
pop_gles2_debug(renderer);
|
|
|
|
wlr_egl_unset_current(renderer->egl);
|
|
|
|
return &renderer->wlr_renderer;
|
|
|
|
error:
|
|
glDeleteProgram(renderer->shaders.quad.program);
|
|
glDeleteProgram(renderer->shaders.tex_rgba.program);
|
|
glDeleteProgram(renderer->shaders.tex_rgbx.program);
|
|
glDeleteProgram(renderer->shaders.tex_ext.program);
|
|
|
|
pop_gles2_debug(renderer);
|
|
|
|
if (renderer->exts.KHR_debug) {
|
|
glDisable(GL_DEBUG_OUTPUT_KHR);
|
|
renderer->procs.glDebugMessageCallbackKHR(NULL, NULL);
|
|
}
|
|
|
|
wlr_egl_unset_current(renderer->egl);
|
|
|
|
free(renderer);
|
|
return NULL;
|
|
}
|
|
|
|
bool wlr_gles2_renderer_check_ext(struct wlr_renderer *wlr_renderer,
|
|
const char *ext) {
|
|
struct wlr_gles2_renderer *renderer = gles2_get_renderer(wlr_renderer);
|
|
return check_gl_ext(renderer->exts_str, ext);
|
|
}
|
|
|
|
GLuint wlr_gles2_renderer_get_current_fbo(struct wlr_renderer *wlr_renderer) {
|
|
struct wlr_gles2_renderer *renderer = gles2_get_renderer(wlr_renderer);
|
|
assert(renderer->current_buffer);
|
|
return renderer->current_buffer->fbo;
|
|
}
|