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Implement sending of image data to GPU

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Kovid Goyal
2017-10-01 09:04:46 +05:30
parent e2a8115328
commit 3cbc20005b
6 changed files with 59 additions and 25 deletions
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13
kitty/gl.h
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@@ -97,6 +97,19 @@ free_texture_impl(GLuint *tex_id) {
*tex_id = 0;
}
static void
send_image_to_gpu_impl(GLuint *tex_id, const void* data, GLsizei width, GLsizei height, bool is_rgb, bool is_4byte_aligned) {
if (!(*tex_id)) { glGenTextures(1, tex_id); check_gl(); }
glBindTexture(GL_TEXTURE_2D, *tex_id); check_gl();
glPixelStorei(GL_UNPACK_ALIGNMENT, is_4byte_aligned ? 4 : 1); check_gl();
glTexParameteri(GL_TEXTURE_2D_ARRAY, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D_ARRAY, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D_ARRAY, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D_ARRAY, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); check_gl();
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, is_rgb ? GL_RGB : GL_RGBA, GL_UNSIGNED_BYTE, data); check_gl();
}
// }}}
// Programs {{{