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https://gitlab.freedesktop.org/wayland/weston
synced 2024-09-06 18:05:39 +00:00
compositor: add support for OES_EGL_image_external
In cases where the GPU can natively handle certain YUV formats, eglQueryWaylandBufferWL() can return the value EGL_TEXTURE_EXTERNAL_WL and the compositor will treat the buffer as a single egl-image-external. See: http://www.khronos.org/registry/gles/extensions/OES/OES_EGL_image_external.txt v1: original v2: rename EGL_TEXTURE_EXTERNAL_OES -> EGL_TEXTURE_EXTERNAL_WL and query for the extension v3: fix build without updated mesa headers, if EGL_TEXTURE_EXTERNAL_WL #define is missing from older mesa headers. v4: resend without missing parts Signed-off-by: Rob Clark <rob@ti.com>
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@ -739,14 +739,14 @@ ensure_textures(struct weston_surface *es, int num_textures)
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for (i = es->num_textures; i < num_textures; i++) {
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glGenTextures(1, &es->textures[i]);
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glBindTexture(GL_TEXTURE_2D, es->textures[i]);
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glTexParameteri(GL_TEXTURE_2D,
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glBindTexture(es->target, es->textures[i]);
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glTexParameteri(es->target,
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GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
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glTexParameteri(GL_TEXTURE_2D,
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glTexParameteri(es->target,
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GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
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}
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es->num_textures = num_textures;
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glBindTexture(GL_TEXTURE_2D, 0);
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glBindTexture(es->target, 0);
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}
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static void
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@ -791,6 +791,7 @@ weston_surface_attach(struct wl_surface *surface, struct wl_buffer *buffer)
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if (wl_buffer_is_shm(buffer)) {
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es->pitch = wl_shm_buffer_get_stride(buffer) / 4;
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es->shader = &ec->texture_shader_rgba;
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es->target = GL_TEXTURE_2D;
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ensure_textures(es, 1);
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glBindTexture(GL_TEXTURE_2D, es->textures[0]);
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@ -806,7 +807,7 @@ weston_surface_attach(struct wl_surface *surface, struct wl_buffer *buffer)
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for (i = 0; i < es->num_images; i++)
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ec->destroy_image(ec->egl_display, es->images[i]);
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es->num_images = 0;
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es->target = GL_TEXTURE_2D;
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switch (format) {
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case EGL_TEXTURE_RGB:
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case EGL_TEXTURE_RGBA:
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@ -814,6 +815,11 @@ weston_surface_attach(struct wl_surface *surface, struct wl_buffer *buffer)
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num_planes = 1;
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es->shader = &ec->texture_shader_rgba;
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break;
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case EGL_TEXTURE_EXTERNAL_WL:
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num_planes = 1;
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es->target = GL_TEXTURE_EXTERNAL_OES;
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es->shader = &ec->texture_shader_egl_external;
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break;
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case EGL_TEXTURE_Y_UV_WL:
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num_planes = 2;
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es->shader = &ec->texture_shader_y_uv;
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@ -844,8 +850,8 @@ weston_surface_attach(struct wl_surface *surface, struct wl_buffer *buffer)
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es->num_images++;
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glActiveTexture(GL_TEXTURE0 + i);
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glBindTexture(GL_TEXTURE_2D, es->textures[i]);
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ec->image_target_texture_2d(GL_TEXTURE_2D,
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glBindTexture(es->target, es->textures[i]);
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ec->image_target_texture_2d(es->target,
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es->images[i]);
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}
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@ -965,9 +971,9 @@ weston_surface_draw(struct weston_surface *es, struct weston_output *output,
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for (i = 0; i < es->num_textures; i++) {
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glUniform1i(es->shader->tex_uniforms[i], i);
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glActiveTexture(GL_TEXTURE0 + i);
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glBindTexture(GL_TEXTURE_2D, es->textures[i]);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, filter);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, filter);
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glBindTexture(es->target, es->textures[i]);
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glTexParameteri(es->target, GL_TEXTURE_MIN_FILTER, filter);
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glTexParameteri(es->target, GL_TEXTURE_MAG_FILTER, filter);
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}
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v = ec->vertices.data;
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@ -2848,6 +2854,19 @@ static const char texture_fragment_shader_rgba[] =
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FRAGMENT_SHADER_EXIT
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"}\n";
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static const char texture_fragment_shader_egl_external[] =
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"#extension GL_OES_EGL_image_external : require\n"
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"precision mediump float;\n"
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"varying vec2 v_texcoord;\n"
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"uniform samplerExternalOES tex;\n"
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FRAGMENT_SHADER_UNIFORMS
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"void main()\n"
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"{\n"
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FRAGMENT_SHADER_INIT
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" gl_FragColor = texture2D(tex, v_texcoord)\n;"
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FRAGMENT_SHADER_EXIT
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"}\n";
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static const char texture_fragment_shader_y_uv[] =
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"precision mediump float;\n"
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"uniform sampler2D tex;\n"
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@ -3287,6 +3306,7 @@ WL_EXPORT int
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weston_compositor_init_gl(struct weston_compositor *ec)
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{
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const char *extensions;
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int has_egl_image_external = 0;
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log_egl_gl_info(ec->egl_display);
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@ -3322,6 +3342,9 @@ weston_compositor_init_gl(struct weston_compositor *ec)
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if (strstr(extensions, "GL_EXT_unpack_subimage"))
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ec->has_unpack_subimage = 1;
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if (strstr(extensions, "GL_OES_EGL_image_external"))
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has_egl_image_external = 1;
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extensions =
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(const char *) eglQueryString(ec->egl_display, EGL_EXTENSIONS);
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if (!extensions) {
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@ -3345,6 +3368,10 @@ weston_compositor_init_gl(struct weston_compositor *ec)
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if (weston_shader_init(&ec->texture_shader_rgba,
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vertex_shader, texture_fragment_shader_rgba) < 0)
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return -1;
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if (has_egl_image_external &&
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weston_shader_init(&ec->texture_shader_egl_external,
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vertex_shader, texture_fragment_shader_egl_external) < 0)
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return -1;
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if (weston_shader_init(&ec->texture_shader_y_uv,
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vertex_shader, texture_fragment_shader_y_uv) < 0)
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return -1;
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@ -277,6 +277,7 @@ struct weston_compositor {
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EGLConfig egl_config;
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GLuint fbo;
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struct weston_shader texture_shader_rgba;
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struct weston_shader texture_shader_egl_external;
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struct weston_shader texture_shader_y_uv;
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struct weston_shader texture_shader_y_u_v;
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struct weston_shader texture_shader_y_xuxv;
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@ -448,6 +449,7 @@ struct weston_surface {
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struct wl_list frame_callback_list;
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EGLImageKHR images[3];
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GLenum target;
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int num_images;
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struct wl_buffer *buffer;
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@ -39,6 +39,7 @@
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#define EGL_TEXTURE_Y_U_V_WL 0x31D7
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#define EGL_TEXTURE_Y_UV_WL 0x31D8
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#define EGL_TEXTURE_Y_XUXV_WL 0x31D9
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#define EGL_TEXTURE_EXTERNAL_WL 0x31DA
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struct wl_display;
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struct wl_buffer;
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@ -53,4 +54,8 @@ typedef EGLBoolean (EGLAPIENTRYP PFNEGLQUERYWAYLANDBUFFERWL) (EGLDisplay dpy, st
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#endif
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#ifndef EGL_TEXTURE_EXTERNAL_WL
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#define EGL_TEXTURE_EXTERNAL_WL 0x31DA
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#endif
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#endif
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