diff options
Diffstat (limited to 'render/gles2/texture.c')
| -rw-r--r-- | render/gles2/texture.c | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/render/gles2/texture.c b/render/gles2/texture.c new file mode 100644 index 00000000..bd588898 --- /dev/null +++ b/render/gles2/texture.c @@ -0,0 +1,104 @@ +#include <stdint.h> +#include <stdlib.h> +#include <assert.h> +#include <GLES2/gl2.h> +#include <GLES2/gl2ext.h> +#include <wayland-util.h> +#include <wayland-server-protocol.h> +#include <wlr/render.h> +#include <wlr/render/interface.h> +#include <wlr/render/matrix.h> +#include <wlr/util/log.h> +#include "render/gles2.h" + +static bool gles2_texture_upload_pixels(struct wlr_texture_state *texture, + enum wl_shm_format format, int stride, int width, int height, + const unsigned char *pixels) { + assert(texture); + const struct pixel_format *fmt = gl_format_for_wl_format(format); + if (!fmt || !fmt->gl_format) { + wlr_log(L_ERROR, "No supported pixel format for this texture"); + return false; + } + texture->wlr_texture->width = width; + texture->wlr_texture->height = height; + texture->wlr_texture->format = format; + texture->pixel_format = fmt; + GL_CALL(glGenTextures(1, &texture->tex_id)); + GL_CALL(glBindTexture(GL_TEXTURE_2D, texture->tex_id)); + GL_CALL(glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT, stride)); + GL_CALL(glTexImage2D(GL_TEXTURE_2D, 0, fmt->gl_format, width, height, 0, + fmt->gl_format, fmt->gl_type, pixels)); + GL_CALL(glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT, 0)); + texture->wlr_texture->valid = true; + return true; +} + +static bool gles2_texture_upload_shm(struct wlr_texture_state *texture, + uint32_t format, struct wl_shm_buffer *buffer) { + const struct pixel_format *fmt = gl_format_for_wl_format(format); + if (!fmt || !fmt->gl_format) { + wlr_log(L_ERROR, "No supported pixel format for this texture"); + return false; + } + wl_shm_buffer_begin_access(buffer); + uint8_t *pixels = wl_shm_buffer_get_data(buffer); + int width = wl_shm_buffer_get_width(buffer); + int height = wl_shm_buffer_get_height(buffer); + int pitch = wl_shm_buffer_get_stride(buffer) / (fmt->bpp / 8); + texture->wlr_texture->width = width; + texture->wlr_texture->height = height; + texture->wlr_texture->format = format; + texture->pixel_format = fmt; + + GL_CALL(glGenTextures(1, &texture->tex_id)); + GL_CALL(glBindTexture(GL_TEXTURE_2D, texture->tex_id)); + GL_CALL(glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT, pitch)); + GL_CALL(glTexImage2D(GL_TEXTURE_2D, 0, fmt->gl_format, width, height, 0, + fmt->gl_format, fmt->gl_type, pixels)); + + texture->wlr_texture->valid = true; + wl_shm_buffer_end_access(buffer); + return true; +} + +static void gles2_texture_get_matrix(struct wlr_texture_state *texture, + float (*matrix)[16], const float (*projection)[16], int x, int y) { + struct wlr_texture *_texture = texture->wlr_texture; + float world[16]; + wlr_matrix_identity(matrix); + wlr_matrix_translate(&world, x, y, 0); + wlr_matrix_mul(matrix, &world, matrix); + wlr_matrix_scale(&world, _texture->width, _texture->height, 1); + wlr_matrix_mul(matrix, &world, matrix); + wlr_matrix_mul(projection, matrix, matrix); +} + +static void gles2_texture_bind(struct wlr_texture_state *texture) { + GL_CALL(glBindTexture(GL_TEXTURE_2D, texture->tex_id)); + GL_CALL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR)); + GL_CALL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR)); + GL_CALL(glUseProgram(*texture->pixel_format->shader)); +} + +static void gles2_texture_destroy(struct wlr_texture_state *texture) { + wl_signal_emit(&texture->wlr_texture->destroy_signal, texture->wlr_texture); + GL_CALL(glDeleteTextures(1, &texture->tex_id)); + free(texture); +} + +static struct wlr_texture_impl wlr_texture_impl = { + .upload_pixels = gles2_texture_upload_pixels, + .upload_shm = gles2_texture_upload_shm, + .get_matrix = gles2_texture_get_matrix, + .bind = gles2_texture_bind, + .destroy = gles2_texture_destroy, +}; + +struct wlr_texture *gles2_texture_init() { + struct wlr_texture_state *state = calloc(sizeof(struct wlr_texture_state), 1); + struct wlr_texture *texture = wlr_texture_init(state, &wlr_texture_impl); + state->wlr_texture = texture; + wl_signal_init(&texture->destroy_signal); + return texture; +} |