diff options
Diffstat (limited to 'drivers/gles2/rasterizer_storage_gles2.cpp')
| -rw-r--r-- | drivers/gles2/rasterizer_storage_gles2.cpp | 68 |
1 files changed, 66 insertions, 2 deletions
diff --git a/drivers/gles2/rasterizer_storage_gles2.cpp b/drivers/gles2/rasterizer_storage_gles2.cpp index d5865064cf..c4c5093540 100644 --- a/drivers/gles2/rasterizer_storage_gles2.cpp +++ b/drivers/gles2/rasterizer_storage_gles2.cpp @@ -613,8 +613,72 @@ Ref<Image> RasterizerStorageGLES2::texture_get_data(RID p_texture, int p_layer) return Ref<Image>(img); #else - ERR_EXPLAIN("Sorry, It's not possible to obtain images back in OpenGL ES"); - ERR_FAIL_V(Ref<Image>()); + Image::Format real_format; + GLenum gl_format; + GLenum gl_internal_format; + GLenum gl_type; + bool compressed; + _get_gl_image_and_format(Ref<Image>(), texture->format, texture->flags, real_format, gl_format, gl_internal_format, gl_type, compressed); + + PoolVector<uint8_t> data; + + int data_size = Image::get_image_data_size(texture->alloc_width, texture->alloc_height, Image::FORMAT_RGBA8, false); + + data.resize(data_size * 2); //add some memory at the end, just in case for buggy drivers + PoolVector<uint8_t>::Write wb = data.write(); + + GLuint temp_framebuffer; + glGenFramebuffers(1, &temp_framebuffer); + + GLuint temp_color_texture; + glGenTextures(1, &temp_color_texture); + + glBindFramebuffer(GL_FRAMEBUFFER, temp_framebuffer); + + glBindTexture(GL_TEXTURE_2D, temp_color_texture); + glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, texture->alloc_width, texture->alloc_height, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL); + + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); + glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, temp_color_texture, 0); + + glDepthMask(GL_FALSE); + glDisable(GL_DEPTH_TEST); + glDisable(GL_CULL_FACE); + glDisable(GL_BLEND); + glDepthFunc(GL_LEQUAL); + glColorMask(1, 1, 1, 1); + glActiveTexture(GL_TEXTURE0); + glBindTexture(GL_TEXTURE_2D, texture->tex_id); + + glViewport(0, 0, texture->alloc_width, texture->alloc_height); + + shaders.copy.bind(); + + glClearColor(0.0, 0.0, 0.0, 0.0); + glClear(GL_COLOR_BUFFER_BIT); + bind_quad_array(); + glDrawArrays(GL_TRIANGLE_FAN, 0, 4); + glBindBuffer(GL_ARRAY_BUFFER, 0); + + glReadPixels(0, 0, texture->alloc_width, texture->alloc_height, GL_RGBA, GL_UNSIGNED_BYTE, &wb[0]); + + glDeleteTextures(1, &temp_color_texture); + + glBindFramebuffer(GL_FRAMEBUFFER, 0); + glDeleteFramebuffers(1, &temp_framebuffer); + + wb = PoolVector<uint8_t>::Write(); + + data.resize(data_size); + + Image *img = memnew(Image(texture->alloc_width, texture->alloc_height, false, Image::FORMAT_RGBA8, data)); + if (!texture->compressed) { + img->convert(real_format); + } + + return Ref<Image>(img); + #endif } |