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Implemented gpu_sprite* generate_rectangle_gpu_sprite

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CobaltXII
2019-01-03 16:08:41 -05:00
parent 32545ae6e5
commit 9f9aaf07e6
1 changed files with 25 additions and 0 deletions
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25
src/inc/sprite.hpp
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@@ -176,3 +176,28 @@ gpu_sprite* generate_test_gpu_sprite()
return my_gpu_sprite;
}
// Generate a rectangle sprite.
gpu_sprite* generate_rectangle_gpu_sprite(int x_tl, int y_tl, int x_br, int y_br, int x_res, int y_res, GLuint texture)
{
cpu_sprite* my_cpu_sprite = allocate_sprite(6);
float x_tlf = x_tl / float(x_res) * 2.0f - 1.0f;
float y_tlf = y_tl / float(y_res) * 2.0f - 1.0f;
float x_brf = x_br / float(x_res) * 2.0f - 1.0f;
float y_brf = y_br / float(y_res) * 2.0f - 1.0f;
write_vertex(my_cpu_sprite, x_tlf, -y_tlf, 0.0f, 0.0f);
write_vertex(my_cpu_sprite, x_tlf, -y_brf, 0.0f, 1.0f);
write_vertex(my_cpu_sprite, x_brf, -y_brf, 1.0f, 1.0f);
write_vertex(my_cpu_sprite, x_tlf, -y_tlf, 0.0f, 0.0f);
write_vertex(my_cpu_sprite, x_brf, -y_brf, 1.0f, 1.0f);
write_vertex(my_cpu_sprite, x_brf, -y_tlf, 1.0f, 0.0f);
gpu_sprite* my_gpu_sprite = make_gpu_sprite(my_cpu_sprite, texture);
return my_gpu_sprite;
}