forked from AuroraMiddleware/gtk
65 lines
2.1 KiB
C
65 lines
2.1 KiB
C
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#include "gskglimageprivate.h"
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#include <epoxy/gl.h>
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void
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gsk_gl_image_create (GskGLImage *self,
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GskGLDriver *gl_driver,
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int width,
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int height,
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int min_filter,
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int mag_filter)
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{
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self->texture_id = gsk_gl_driver_create_texture (gl_driver, width, height);
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self->width = width;
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self->height = height;
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gsk_gl_driver_bind_source_texture (gl_driver, self->texture_id);
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gsk_gl_driver_init_texture_empty (gl_driver, self->texture_id, min_filter, mag_filter);
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gsk_gl_driver_mark_texture_permanent (gl_driver, self->texture_id);
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}
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void
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gsk_gl_image_destroy (GskGLImage *self,
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GskGLDriver *gl_driver)
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{
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gsk_gl_driver_destroy_texture (gl_driver, self->texture_id);
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self->texture_id = 0;
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}
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void
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gsk_gl_image_write_to_png (const GskGLImage *self,
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GskGLDriver *gl_driver,
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const char *filename)
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{
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int stride = cairo_format_stride_for_width (CAIRO_FORMAT_ARGB32, self->width);
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guchar *data = g_malloc (self->height * stride);
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cairo_surface_t *s;
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gsk_gl_driver_bind_source_texture (gl_driver, self->texture_id);
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glGetTexImage (GL_TEXTURE_2D, 0, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, data);
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s = cairo_image_surface_create_for_data (data, CAIRO_FORMAT_ARGB32, self->width, self->height, stride);
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cairo_surface_write_to_png (s, filename);
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cairo_surface_destroy (s);
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g_free (data);
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}
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void
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gsk_gl_image_upload_region (GskGLImage *self,
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GskGLDriver *gl_driver,
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const GskImageRegion *region)
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{
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gsk_gl_driver_bind_source_texture (gl_driver, self->texture_id);
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glBindTexture (GL_TEXTURE_2D, self->texture_id);
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glTexSubImage2D (GL_TEXTURE_2D, 0, region->x, region->y, region->width, region->height,
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GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, region->data);
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#ifdef G_ENABLE_DEBUG
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/*gsk_gl_driver_bind_source_texture (gl_driver, self->texture_id);*/
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/*gsk_gl_image_dump (self, gl_driver, "/home/baedert/atlases/test_dump.png");*/
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#endif
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}
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