wlroots/render/gles2/renderer.c

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#include <assert.h>
#include <drm_fourcc.h>
#include <gbm.h>
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#include <GLES2/gl2.h>
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#include <GLES2/gl2ext.h>
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#include <stdint.h>
#include <stdio.h>
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#include <stdlib.h>
#include <unistd.h>
#include <wayland-server-protocol.h>
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#include <wayland-util.h>
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#include <wlr/render/egl.h>
#include <wlr/render/interface.h>
#include <wlr/render/wlr_renderer.h>
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#include <wlr/types/wlr_matrix.h>
#include <wlr/types/wlr_linux_dmabuf_v1.h>
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#include <wlr/util/log.h>
#include "render/egl.h"
#include "render/gles2.h"
#include "render/pixel_format.h"
#include "types/wlr_buffer.h"
static const GLfloat verts[] = {
1, 0, // top right
0, 0, // top left
1, 1, // bottom right
0, 1, // bottom left
};
static const struct wlr_renderer_impl renderer_impl;
bool wlr_renderer_is_gles2(struct wlr_renderer *wlr_renderer) {
return wlr_renderer->impl == &renderer_impl;
}
struct wlr_gles2_renderer *gles2_get_renderer(
struct wlr_renderer *wlr_renderer) {
assert(wlr_renderer_is_gles2(wlr_renderer));
return (struct wlr_gles2_renderer *)wlr_renderer;
}
static struct wlr_gles2_renderer *gles2_get_renderer_in_context(
struct wlr_renderer *wlr_renderer) {
struct wlr_gles2_renderer *renderer = gles2_get_renderer(wlr_renderer);
assert(wlr_egl_is_current(renderer->egl));
assert(renderer->current_buffer != NULL);
return renderer;
}
static void destroy_buffer(struct wlr_gles2_buffer *buffer) {
wl_list_remove(&buffer->link);
wl_list_remove(&buffer->buffer_destroy.link);
struct wlr_egl_context prev_ctx;
wlr_egl_save_context(&prev_ctx);
wlr_egl_make_current(buffer->renderer->egl);
push_gles2_debug(buffer->renderer);
glDeleteFramebuffers(1, &buffer->fbo);
glDeleteRenderbuffers(1, &buffer->rbo);
pop_gles2_debug(buffer->renderer);
wlr_egl_destroy_image(buffer->renderer->egl, buffer->image);
wlr_egl_restore_context(&prev_ctx);
free(buffer);
}
static struct wlr_gles2_buffer *get_buffer(struct wlr_gles2_renderer *renderer,
struct wlr_buffer *wlr_buffer) {
struct wlr_gles2_buffer *buffer;
wl_list_for_each(buffer, &renderer->buffers, link) {
if (buffer->buffer == wlr_buffer) {
return buffer;
}
}
return NULL;
}
static void handle_buffer_destroy(struct wl_listener *listener, void *data) {
struct wlr_gles2_buffer *buffer =
wl_container_of(listener, buffer, buffer_destroy);
destroy_buffer(buffer);
}
static struct wlr_gles2_buffer *create_buffer(struct wlr_gles2_renderer *renderer,
struct wlr_buffer *wlr_buffer) {
struct wlr_gles2_buffer *buffer = calloc(1, sizeof(*buffer));
if (buffer == NULL) {
wlr_log_errno(WLR_ERROR, "Allocation failed");
return NULL;
}
buffer->buffer = wlr_buffer;
buffer->renderer = renderer;
struct wlr_dmabuf_attributes dmabuf = {0};
if (!wlr_buffer_get_dmabuf(wlr_buffer, &dmabuf)) {
goto error_buffer;
}
bool external_only;
buffer->image = wlr_egl_create_image_from_dmabuf(renderer->egl,
&dmabuf, &external_only);
if (buffer->image == EGL_NO_IMAGE_KHR) {
goto error_buffer;
}
push_gles2_debug(renderer);
glGenRenderbuffers(1, &buffer->rbo);
glBindRenderbuffer(GL_RENDERBUFFER, buffer->rbo);
renderer->procs.glEGLImageTargetRenderbufferStorageOES(GL_RENDERBUFFER,
buffer->image);
glBindRenderbuffer(GL_RENDERBUFFER, 0);
glGenFramebuffers(1, &buffer->fbo);
glBindFramebuffer(GL_FRAMEBUFFER, buffer->fbo);
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
GL_RENDERBUFFER, buffer->rbo);
GLenum fb_status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
glBindFramebuffer(GL_FRAMEBUFFER, 0);
pop_gles2_debug(renderer);
if (fb_status != GL_FRAMEBUFFER_COMPLETE) {
wlr_log(WLR_ERROR, "Failed to create FBO");
goto error_image;
}
buffer->buffer_destroy.notify = handle_buffer_destroy;
wl_signal_add(&wlr_buffer->events.destroy, &buffer->buffer_destroy);
wl_list_insert(&renderer->buffers, &buffer->link);
wlr_log(WLR_DEBUG, "Created GL FBO for buffer %dx%d",
wlr_buffer->width, wlr_buffer->height);
return buffer;
error_image:
wlr_egl_destroy_image(renderer->egl, buffer->image);
error_buffer:
free(buffer);
return NULL;
}
static bool gles2_bind_buffer(struct wlr_renderer *wlr_renderer,
struct wlr_buffer *wlr_buffer) {
struct wlr_gles2_renderer *renderer = gles2_get_renderer(wlr_renderer);
if (renderer->current_buffer != NULL) {
assert(wlr_egl_is_current(renderer->egl));
push_gles2_debug(renderer);
glFlush();
glBindFramebuffer(GL_FRAMEBUFFER, 0);
pop_gles2_debug(renderer);
wlr_buffer_unlock(renderer->current_buffer->buffer);
renderer->current_buffer = NULL;
}
if (wlr_buffer == NULL) {
wlr_egl_unset_current(renderer->egl);
return true;
}
wlr_egl_make_current(renderer->egl);
struct wlr_gles2_buffer *buffer = get_buffer(renderer, wlr_buffer);
if (buffer == NULL) {
buffer = create_buffer(renderer, wlr_buffer);
}
if (buffer == NULL) {
return false;
}
wlr_buffer_lock(wlr_buffer);
renderer->current_buffer = buffer;
push_gles2_debug(renderer);
glBindFramebuffer(GL_FRAMEBUFFER, renderer->current_buffer->fbo);
pop_gles2_debug(renderer);
return true;
}
static void gles2_begin(struct wlr_renderer *wlr_renderer, uint32_t width,
uint32_t height) {
struct wlr_gles2_renderer *renderer =
gles2_get_renderer_in_context(wlr_renderer);
push_gles2_debug(renderer);
glViewport(0, 0, width, height);
renderer->viewport_width = width;
renderer->viewport_height = height;
// refresh projection matrix
wlr_matrix_projection(renderer->projection, width, height,
WL_OUTPUT_TRANSFORM_NORMAL);
// enable transparency
glEnable(GL_BLEND);
glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
// XXX: maybe we should save output projection and remove some of the need
// for users to sling matricies themselves
pop_gles2_debug(renderer);
}
static void gles2_end(struct wlr_renderer *wlr_renderer) {
gles2_get_renderer_in_context(wlr_renderer);
// no-op
}
static void gles2_clear(struct wlr_renderer *wlr_renderer,
const float color[static 4]) {
struct wlr_gles2_renderer *renderer =
gles2_get_renderer_in_context(wlr_renderer);
push_gles2_debug(renderer);
glClearColor(color[0], color[1], color[2], color[3]);
glClear(GL_COLOR_BUFFER_BIT);
pop_gles2_debug(renderer);
}
static void gles2_scissor(struct wlr_renderer *wlr_renderer,
struct wlr_box *box) {
struct wlr_gles2_renderer *renderer =
gles2_get_renderer_in_context(wlr_renderer);
push_gles2_debug(renderer);
if (box != NULL) {
glScissor(box->x, box->y, box->width, box->height);
glEnable(GL_SCISSOR_TEST);
} else {
glDisable(GL_SCISSOR_TEST);
}
pop_gles2_debug(renderer);
}
static const float flip_180[9] = {
1.0f, 0.0f, 0.0f,
0.0f, -1.0f, 0.0f,
0.0f, 0.0f, 1.0f,
};
static bool gles2_render_subtexture_with_matrix(
struct wlr_renderer *wlr_renderer, struct wlr_texture *wlr_texture,
const struct wlr_fbox *box, const float matrix[static 9],
float alpha) {
struct wlr_gles2_renderer *renderer =
gles2_get_renderer_in_context(wlr_renderer);
struct wlr_gles2_texture *texture =
gles2_get_texture(wlr_texture);
assert(texture->renderer == renderer);
struct wlr_gles2_tex_shader *shader = NULL;
switch (texture->target) {
case GL_TEXTURE_2D:
if (texture->has_alpha) {
shader = &renderer->shaders.tex_rgba;
} else {
shader = &renderer->shaders.tex_rgbx;
}
break;
case GL_TEXTURE_EXTERNAL_OES:
shader = &renderer->shaders.tex_ext;
if (!renderer->exts.egl_image_external_oes) {
wlr_log(WLR_ERROR, "Failed to render texture: "
"GL_TEXTURE_EXTERNAL_OES not supported");
return false;
}
break;
default:
abort();
}
float gl_matrix[9];
wlr_matrix_multiply(gl_matrix, renderer->projection, matrix);
wlr_matrix_multiply(gl_matrix, flip_180, gl_matrix);
// OpenGL ES 2 requires the glUniformMatrix3fv transpose parameter to be set
// to GL_FALSE
wlr_matrix_transpose(gl_matrix, gl_matrix);
push_gles2_debug(renderer);
glActiveTexture(GL_TEXTURE0);
glBindTexture(texture->target, texture->tex);
glTexParameteri(texture->target, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glUseProgram(shader->program);
glUniformMatrix3fv(shader->proj, 1, GL_FALSE, gl_matrix);
glUniform1i(shader->invert_y, texture->inverted_y);
glUniform1i(shader->tex, 0);
glUniform1f(shader->alpha, alpha);
const GLfloat x1 = box->x / wlr_texture->width;
const GLfloat y1 = box->y / wlr_texture->height;
const GLfloat x2 = (box->x + box->width) / wlr_texture->width;
const GLfloat y2 = (box->y + box->height) / wlr_texture->height;
const GLfloat texcoord[] = {
x2, y1, // top right
x1, y1, // top left
x2, y2, // bottom right
x1, y2, // bottom left
};
glVertexAttribPointer(shader->pos_attrib, 2, GL_FLOAT, GL_FALSE, 0, verts);
glVertexAttribPointer(shader->tex_attrib, 2, GL_FLOAT, GL_FALSE, 0, texcoord);
glEnableVertexAttribArray(shader->pos_attrib);
glEnableVertexAttribArray(shader->tex_attrib);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
glDisableVertexAttribArray(shader->pos_attrib);
glDisableVertexAttribArray(shader->tex_attrib);
glBindTexture(texture->target, 0);
pop_gles2_debug(renderer);
return true;
}
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]) {
struct wlr_gles2_renderer *renderer =
gles2_get_renderer_in_context(wlr_renderer);
float gl_matrix[9];
wlr_matrix_multiply(gl_matrix, renderer->projection, matrix);
wlr_matrix_multiply(gl_matrix, flip_180, gl_matrix);
// OpenGL ES 2 requires the glUniformMatrix3fv transpose parameter to be set
// to GL_FALSE
wlr_matrix_transpose(gl_matrix, gl_matrix);
push_gles2_debug(renderer);
glUseProgram(renderer->shaders.quad.program);
glUniformMatrix3fv(renderer->shaders.quad.proj, 1, GL_FALSE, gl_matrix);
glUniform4f(renderer->shaders.quad.color, color[0], color[1], color[2], color[3]);
glVertexAttribPointer(renderer->shaders.quad.pos_attrib, 2, GL_FLOAT, GL_FALSE,
0, verts);
glEnableVertexAttribArray(renderer->shaders.quad.pos_attrib);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
glDisableVertexAttribArray(renderer->shaders.quad.pos_attrib);
pop_gles2_debug(renderer);
}
static const uint32_t *gles2_get_shm_texture_formats(
struct wlr_renderer *wlr_renderer, size_t *len) {
return get_gles2_shm_formats(len);
}
static bool gles2_resource_is_wl_drm_buffer(struct wlr_renderer *wlr_renderer,
struct wl_resource *resource) {
struct wlr_gles2_renderer *renderer = gles2_get_renderer(wlr_renderer);
if (!renderer->egl->exts.bind_wayland_display_wl) {
return false;
}
EGLint fmt;
return renderer->egl->procs.eglQueryWaylandBufferWL(renderer->egl->display,
resource, EGL_TEXTURE_FORMAT, &fmt);
}
static void gles2_wl_drm_buffer_get_size(struct wlr_renderer *wlr_renderer,
struct wl_resource *buffer, int *width, int *height) {
struct wlr_gles2_renderer *renderer =
gles2_get_renderer(wlr_renderer);
if (!renderer->egl->exts.bind_wayland_display_wl) {
return;
}
renderer->egl->procs.eglQueryWaylandBufferWL(renderer->egl->display,
buffer, EGL_WIDTH, width);
renderer->egl->procs.eglQueryWaylandBufferWL(renderer->egl->display,
buffer, EGL_HEIGHT, height);
}
static const struct wlr_drm_format_set *gles2_get_dmabuf_texture_formats(
struct wlr_renderer *wlr_renderer) {
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struct wlr_gles2_renderer *renderer = gles2_get_renderer(wlr_renderer);
return wlr_egl_get_dmabuf_texture_formats(renderer->egl);
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}
static const struct wlr_drm_format_set *gles2_get_render_formats(
struct wlr_renderer *wlr_renderer) {
struct wlr_gles2_renderer *renderer = gles2_get_renderer(wlr_renderer);
return wlr_egl_get_dmabuf_render_formats(renderer->egl);
}
static uint32_t gles2_preferred_read_format(
struct wlr_renderer *wlr_renderer) {
struct wlr_gles2_renderer *renderer =
gles2_get_renderer_in_context(wlr_renderer);
push_gles2_debug(renderer);
GLint gl_format = -1, gl_type = -1;
glGetIntegerv(GL_IMPLEMENTATION_COLOR_READ_FORMAT, &gl_format);
glGetIntegerv(GL_IMPLEMENTATION_COLOR_READ_TYPE, &gl_type);
EGLint alpha_size = -1;
glBindRenderbuffer(GL_RENDERBUFFER, renderer->current_buffer->rbo);
glGetRenderbufferParameteriv(GL_RENDERBUFFER,
GL_RENDERBUFFER_ALPHA_SIZE, &alpha_size);
glBindRenderbuffer(GL_RENDERBUFFER, 0);
pop_gles2_debug(renderer);
const struct wlr_gles2_pixel_format *fmt =
get_gles2_format_from_gl(gl_format, gl_type, alpha_size > 0);
if (fmt != NULL) {
return fmt->drm_format;
}
if (renderer->exts.read_format_bgra_ext) {
return DRM_FORMAT_XRGB8888;
}
return DRM_FORMAT_XBGR8888;
}
static bool gles2_read_pixels(struct wlr_renderer *wlr_renderer,
uint32_t drm_format, uint32_t *flags, uint32_t stride,
uint32_t width, uint32_t height, uint32_t src_x, uint32_t src_y,
uint32_t dst_x, uint32_t dst_y, void *data) {
struct wlr_gles2_renderer *renderer =
gles2_get_renderer_in_context(wlr_renderer);
const struct wlr_gles2_pixel_format *fmt =
get_gles2_format_from_drm(drm_format);
if (fmt == NULL) {
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wlr_log(WLR_ERROR, "Cannot read pixels: unsupported pixel format");
return false;
}
if (fmt->gl_format == GL_BGRA_EXT && !renderer->exts.read_format_bgra_ext) {
wlr_log(WLR_ERROR,
"Cannot read pixels: missing GL_EXT_read_format_bgra extension");
return false;
}
const struct wlr_pixel_format_info *drm_fmt =
drm_get_pixel_format_info(fmt->drm_format);
assert(drm_fmt);
push_gles2_debug(renderer);
// Make sure any pending drawing is finished before we try to read it
glFinish();
glGetError(); // Clear the error flag
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unsigned char *p = (unsigned char *)data + dst_y * stride;
uint32_t pack_stride = width * drm_fmt->bpp / 8;
if (pack_stride == stride && dst_x == 0) {
// Under these particular conditions, we can read the pixels with only
// one glReadPixels call
glReadPixels(src_x, src_y, width, height, fmt->gl_format, fmt->gl_type, p);
} else {
// Unfortunately GLES2 doesn't support GL_PACK_*, so we have to read
// the lines out row by row
for (size_t i = 0; i < height; ++i) {
uint32_t y = src_y + i;
glReadPixels(src_x, y, width, 1, fmt->gl_format,
fmt->gl_type, p + i * stride + dst_x * drm_fmt->bpp / 8);
}
}
pop_gles2_debug(renderer);
if (flags != NULL) {
*flags = 0;
}
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return glGetError() == GL_NO_ERROR;
}
static bool gles2_init_wl_display(struct wlr_renderer *wlr_renderer,
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struct wl_display *wl_display) {
struct wlr_gles2_renderer *renderer =
gles2_get_renderer(wlr_renderer);
if (renderer->egl->exts.bind_wayland_display_wl) {
if (!wlr_egl_bind_display(renderer->egl, wl_display)) {
wlr_log(WLR_ERROR, "Failed to bind wl_display to EGL");
return false;
}
} else {
wlr_log(WLR_INFO, "EGL_WL_bind_wayland_display is not supported");
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}
if (wlr_linux_dmabuf_v1_create(wl_display, wlr_renderer) == NULL) {
return false;
}
return true;
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}
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;
}
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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.debug_khr) {
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);
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}
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,
.resource_is_wl_drm_buffer = gles2_resource_is_wl_drm_buffer,
.wl_drm_buffer_get_size = gles2_wl_drm_buffer_get_size,
.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,
.texture_from_pixels = gles2_texture_from_pixels,
.texture_from_wl_drm = gles2_texture_from_wl_drm,
.texture_from_dmabuf = gles2_texture_from_dmabuf,
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.init_wl_display = gles2_init_wl_display,
.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();
}
}
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static enum wlr_log_importance gles2_log_importance_to_wlr(GLenum type) {
switch (type) {
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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) {
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) {
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;
}
extern const GLchar quad_vertex_src[];
extern const GLchar quad_fragment_src[];
extern const GLchar tex_vertex_src[];
extern const GLchar tex_fragment_src_rgba[];
extern const GLchar tex_fragment_src_rgbx[];
extern const GLchar tex_fragment_src_external[];
struct wlr_renderer *wlr_gles2_renderer_create_with_drm_fd(int drm_fd) {
struct gbm_device *gbm_device = gbm_create_device(drm_fd);
if (!gbm_device) {
wlr_log(WLR_ERROR, "Failed to create GBM device");
return NULL;
}
struct wlr_egl *egl = wlr_egl_create(EGL_PLATFORM_GBM_KHR, gbm_device);
if (egl == NULL) {
wlr_log(WLR_ERROR, "Could not initialize EGL");
gbm_device_destroy(gbm_device);
return NULL;
}
egl->gbm_device = gbm_device;
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;
}
2018-03-31 22:49:43 +00:00
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);
2017-10-21 21:20:26 +00:00
wl_list_init(&renderer->buffers);
wl_list_init(&renderer->textures);
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renderer->egl = egl;
renderer->exts_str = exts_str;
renderer->drm_fd = -1;
wlr_log(WLR_INFO, "Creating GLES2 renderer");
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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);
2018-03-27 21:02:48 +00:00
if (!renderer->egl->exts.image_dmabuf_import_ext) {
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.read_format_bgra_ext =
check_gl_ext(exts_str, "GL_EXT_read_format_bgra");
if (check_gl_ext(exts_str, "GL_KHR_debug")) {
renderer->exts.debug_khr = 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.egl_image_external_oes = true;
load_gl_proc(&renderer->procs.glEGLImageTargetTexture2DOES,
"glEGLImageTargetTexture2DOES");
}
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if (check_gl_ext(exts_str, "GL_OES_EGL_image")) {
renderer->exts.egl_image_oes = true;
load_gl_proc(&renderer->procs.glEGLImageTargetRenderbufferStorageOES,
2020-04-22 23:23:56 +00:00
"glEGLImageTargetRenderbufferStorageOES");
}
if (renderer->exts.debug_khr) {
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, quad_vertex_src, quad_fragment_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, tex_vertex_src, tex_fragment_src_rgba);
if (!renderer->shaders.tex_rgba.program) {
goto error;
}
renderer->shaders.tex_rgba.proj = glGetUniformLocation(prog, "proj");
renderer->shaders.tex_rgba.invert_y = glGetUniformLocation(prog, "invert_y");
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, tex_vertex_src, tex_fragment_src_rgbx);
if (!renderer->shaders.tex_rgbx.program) {
goto error;
}
renderer->shaders.tex_rgbx.proj = glGetUniformLocation(prog, "proj");
renderer->shaders.tex_rgbx.invert_y = glGetUniformLocation(prog, "invert_y");
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.egl_image_external_oes) {
renderer->shaders.tex_ext.program = prog =
link_program(renderer, tex_vertex_src, tex_fragment_src_external);
if (!renderer->shaders.tex_ext.program) {
goto error;
}
renderer->shaders.tex_ext.proj = glGetUniformLocation(prog, "proj");
renderer->shaders.tex_ext.invert_y = glGetUniformLocation(prog, "invert_y");
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);
2017-10-21 21:20:26 +00:00
wlr_egl_unset_current(renderer->egl);
2017-08-14 12:37:50 +00:00
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.debug_khr) {
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;
}