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261 lines
8.8 KiB
261 lines
8.8 KiB
#include <stdint.h>
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#include <stdlib.h>
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#include <assert.h>
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#include <GLES2/gl2.h>
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#include <GLES2/gl2ext.h>
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#include <wayland-util.h>
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#include <wayland-server-protocol.h>
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#include <wlr/egl.h>
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#include <wlr/render.h>
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#include <wlr/render/interface.h>
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#include <wlr/render/matrix.h>
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#include <wlr/util/log.h>
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#include "render/gles2.h"
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static struct pixel_format external_pixel_format = {
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.wl_format = 0,
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.depth = 0,
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.bpp = 0,
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.gl_format = 0,
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.gl_type = 0,
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.shader = &shaders.external
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};
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static void gles2_texture_ensure_texture(struct wlr_gles2_texture *texture) {
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if (texture->tex_id) {
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return;
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}
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GL_CALL(glGenTextures(1, &texture->tex_id));
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GL_CALL(glBindTexture(GL_TEXTURE_2D, texture->tex_id));
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GL_CALL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE));
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GL_CALL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE));
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}
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static bool gles2_texture_upload_pixels(struct wlr_texture *_texture,
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enum wl_shm_format format, int stride, int width, int height,
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const unsigned char *pixels) {
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struct wlr_gles2_texture *texture = (struct wlr_gles2_texture *)_texture;
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assert(texture);
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const struct pixel_format *fmt = gl_format_for_wl_format(format);
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if (!fmt || !fmt->gl_format) {
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wlr_log(L_ERROR, "No supported pixel format for this texture");
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return false;
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}
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texture->wlr_texture.width = width;
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texture->wlr_texture.height = height;
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texture->wlr_texture.format = format;
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texture->pixel_format = fmt;
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gles2_texture_ensure_texture(texture);
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GL_CALL(glBindTexture(GL_TEXTURE_2D, texture->tex_id));
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GL_CALL(glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT, stride));
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GL_CALL(glTexImage2D(GL_TEXTURE_2D, 0, fmt->gl_format, width, height, 0,
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fmt->gl_format, fmt->gl_type, pixels));
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texture->wlr_texture.valid = true;
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return true;
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}
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static bool gles2_texture_update_pixels(struct wlr_texture *_texture,
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enum wl_shm_format format, int stride, int x, int y,
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int width, int height, const unsigned char *pixels) {
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struct wlr_gles2_texture *texture = (struct wlr_gles2_texture *)_texture;
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assert(texture);
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// TODO: Test if the unpack subimage extension is supported and adjust the
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// upload strategy if not
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if (!texture->wlr_texture.valid
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|| texture->wlr_texture.format != format
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/* || unpack not supported */) {
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return gles2_texture_upload_pixels(&texture->wlr_texture,
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format, stride, width, height, pixels);
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}
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const struct pixel_format *fmt = texture->pixel_format;
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GL_CALL(glBindTexture(GL_TEXTURE_2D, texture->tex_id));
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GL_CALL(glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT, stride));
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GL_CALL(glPixelStorei(GL_UNPACK_SKIP_PIXELS_EXT, x));
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GL_CALL(glPixelStorei(GL_UNPACK_SKIP_ROWS_EXT, y));
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GL_CALL(glTexSubImage2D(GL_TEXTURE_2D, 0, x, y, width, height,
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fmt->gl_format, fmt->gl_type, pixels));
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GL_CALL(glPixelStorei(GL_UNPACK_SKIP_PIXELS_EXT, 0));
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GL_CALL(glPixelStorei(GL_UNPACK_SKIP_ROWS_EXT, 0));
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return true;
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}
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static bool gles2_texture_upload_shm(struct wlr_texture *_texture,
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uint32_t format, struct wl_shm_buffer *buffer) {
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struct wlr_gles2_texture *texture = (struct wlr_gles2_texture *)_texture;
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const struct pixel_format *fmt = gl_format_for_wl_format(format);
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if (!fmt || !fmt->gl_format) {
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wlr_log(L_ERROR, "No supported pixel format for this texture");
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return false;
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}
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wl_shm_buffer_begin_access(buffer);
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uint8_t *pixels = wl_shm_buffer_get_data(buffer);
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int width = wl_shm_buffer_get_width(buffer);
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int height = wl_shm_buffer_get_height(buffer);
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int pitch = wl_shm_buffer_get_stride(buffer) / (fmt->bpp / 8);
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texture->wlr_texture.width = width;
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texture->wlr_texture.height = height;
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texture->wlr_texture.format = format;
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texture->pixel_format = fmt;
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gles2_texture_ensure_texture(texture);
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GL_CALL(glBindTexture(GL_TEXTURE_2D, texture->tex_id));
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GL_CALL(glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT, pitch));
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GL_CALL(glPixelStorei(GL_UNPACK_SKIP_PIXELS_EXT, 0));
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GL_CALL(glPixelStorei(GL_UNPACK_SKIP_ROWS_EXT, 0));
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GL_CALL(glTexImage2D(GL_TEXTURE_2D, 0, fmt->gl_format, width, height, 0,
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fmt->gl_format, fmt->gl_type, pixels));
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texture->wlr_texture.valid = true;
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wl_shm_buffer_end_access(buffer);
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return true;
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}
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static bool gles2_texture_update_shm(struct wlr_texture *_texture,
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uint32_t format, int x, int y, int width, int height,
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struct wl_shm_buffer *buffer) {
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struct wlr_gles2_texture *texture = (struct wlr_gles2_texture *)_texture;
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// TODO: Test if the unpack subimage extension is supported and adjust the
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// upload strategy if not
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assert(texture);
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if (!texture->wlr_texture.valid
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|| texture->wlr_texture.format != format
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/* || unpack not supported */) {
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return gles2_texture_upload_shm(&texture->wlr_texture, format, buffer);
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}
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const struct pixel_format *fmt = texture->pixel_format;
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wl_shm_buffer_begin_access(buffer);
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uint8_t *pixels = wl_shm_buffer_get_data(buffer);
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int pitch = wl_shm_buffer_get_stride(buffer) / (fmt->bpp / 8);
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GL_CALL(glBindTexture(GL_TEXTURE_2D, texture->tex_id));
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GL_CALL(glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT, pitch));
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GL_CALL(glPixelStorei(GL_UNPACK_SKIP_PIXELS_EXT, x));
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GL_CALL(glPixelStorei(GL_UNPACK_SKIP_ROWS_EXT, y));
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GL_CALL(glTexSubImage2D(GL_TEXTURE_2D, 0, x, y, width, height,
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fmt->gl_format, fmt->gl_type, pixels));
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GL_CALL(glPixelStorei(GL_UNPACK_SKIP_PIXELS_EXT, 0));
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GL_CALL(glPixelStorei(GL_UNPACK_SKIP_ROWS_EXT, 0));
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wl_shm_buffer_end_access(buffer);
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return true;
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}
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static bool gles2_texture_upload_drm(struct wlr_texture *_tex,
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struct wl_resource *buf) {
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struct wlr_gles2_texture *tex = (struct wlr_gles2_texture *)_tex;
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if (!glEGLImageTargetTexture2DOES) {
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return false;
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}
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EGLint format;
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if (!wlr_egl_query_buffer(tex->egl, buf, EGL_TEXTURE_FORMAT, &format)) {
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wlr_log(L_INFO, "upload_drm called with no drm buffer");
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return false;
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}
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wlr_egl_query_buffer(tex->egl, buf, EGL_WIDTH,
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(EGLint*)&tex->wlr_texture.width);
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wlr_egl_query_buffer(tex->egl, buf, EGL_HEIGHT,
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(EGLint*)&tex->wlr_texture.height);
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EGLint inverted_y;
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wlr_egl_query_buffer(tex->egl, buf, EGL_WAYLAND_Y_INVERTED_WL, &inverted_y);
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GLenum target;
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const struct pixel_format *pf;
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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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target = GL_TEXTURE_2D;
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pf = gl_format_for_wl_format(WL_SHM_FORMAT_ARGB8888);
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break;
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case EGL_TEXTURE_EXTERNAL_WL:
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target = GL_TEXTURE_EXTERNAL_OES;
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pf = &external_pixel_format;
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break;
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default:
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wlr_log(L_ERROR, "invalid/unsupported egl buffer format");
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return false;
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}
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gles2_texture_ensure_texture(tex);
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GL_CALL(glBindTexture(GL_TEXTURE_2D, tex->tex_id));
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EGLint attribs[] = { EGL_WAYLAND_PLANE_WL, 0, EGL_NONE };
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if (tex->image) {
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wlr_egl_destroy_image(tex->egl, tex->image);
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}
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tex->image = wlr_egl_create_image(tex->egl, EGL_WAYLAND_BUFFER_WL,
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(EGLClientBuffer*) buf, attribs);
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if (!tex->image) {
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wlr_log(L_ERROR, "failed to create egl image: %s", egl_error());
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return false;
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}
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GL_CALL(glActiveTexture(GL_TEXTURE0));
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GL_CALL(glBindTexture(target, tex->tex_id));
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GL_CALL(glEGLImageTargetTexture2DOES(target, tex->image));
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tex->wlr_texture.valid = true;
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tex->pixel_format = pf;
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return true;
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}
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static void gles2_texture_get_matrix(struct wlr_texture *_texture,
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float (*matrix)[16], const float (*projection)[16], int x, int y) {
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struct wlr_gles2_texture *texture = (struct wlr_gles2_texture *)_texture;
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float world[16];
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wlr_matrix_identity(matrix);
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wlr_matrix_translate(&world, x, y, 0);
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wlr_matrix_mul(matrix, &world, matrix);
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wlr_matrix_scale(&world,
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texture->wlr_texture.width, texture->wlr_texture.height, 1);
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wlr_matrix_mul(matrix, &world, matrix);
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wlr_matrix_mul(projection, matrix, matrix);
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}
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static void gles2_texture_bind(struct wlr_texture *_texture) {
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struct wlr_gles2_texture *texture = (struct wlr_gles2_texture *)_texture;
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GL_CALL(glBindTexture(GL_TEXTURE_2D, texture->tex_id));
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GL_CALL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR));
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GL_CALL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR));
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GL_CALL(glUseProgram(*texture->pixel_format->shader));
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}
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static void gles2_texture_destroy(struct wlr_texture *_texture) {
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struct wlr_gles2_texture *texture = (struct wlr_gles2_texture *)_texture;
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wl_signal_emit(&texture->wlr_texture.destroy_signal, &texture->wlr_texture);
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if (texture->tex_id) {
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GL_CALL(glDeleteTextures(1, &texture->tex_id));
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}
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if (texture->image) {
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wlr_egl_destroy_image(texture->egl, texture->image);
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}
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free(texture);
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}
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static struct wlr_texture_impl wlr_texture_impl = {
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.upload_pixels = gles2_texture_upload_pixels,
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.update_pixels = gles2_texture_update_pixels,
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.upload_shm = gles2_texture_upload_shm,
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.update_shm = gles2_texture_update_shm,
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.upload_drm = gles2_texture_upload_drm,
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.get_matrix = gles2_texture_get_matrix,
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.bind = gles2_texture_bind,
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.destroy = gles2_texture_destroy,
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};
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struct wlr_texture *gles2_texture_init(struct wlr_egl *egl) {
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struct wlr_gles2_texture *texture =
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calloc(1, sizeof(struct wlr_gles2_texture));
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wlr_texture_init(&texture->wlr_texture, &wlr_texture_impl);
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texture->egl = egl;
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return &texture->wlr_texture;
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}
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