a9c1d47255
This PR adds several tests to GTest for testing blend states and immediate mode. The immediate mode test are basic and will be extended in the near future. The tests have been developed in order to get the first pixel on screen for the Vulkan backend. In the first phase of this goal we had to validate that everything was working as expected without being able to validate it by starting Blender. Pull Request: https://projects.blender.org/blender/blender/pulls/107834
133 lines
4.1 KiB
C++
133 lines
4.1 KiB
C++
/* SPDX-License-Identifier: Apache-2.0 */
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#include "testing/testing.h"
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#include "gpu_testing.hh"
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#include "GPU_batch.h"
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#include "GPU_batch_presets.h"
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#include "GPU_framebuffer.h"
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#include "GPU_matrix.h"
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#include "BLI_math_vector.hh"
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#include "intern/draw_cache.h"
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namespace blender::gpu::tests {
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template<eGPUBlend blend_type>
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void blend_test(float4 source_a, float4 source_b, float4 expected_result)
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{
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GPUOffScreen *offscreen = GPU_offscreen_create(1,
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1,
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false,
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GPU_RGBA16F,
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GPU_TEXTURE_USAGE_ATTACHMENT |
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GPU_TEXTURE_USAGE_HOST_READ,
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nullptr);
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BLI_assert(offscreen != nullptr);
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GPU_offscreen_bind(offscreen, false);
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GPUTexture *color_texture = GPU_offscreen_color_texture(offscreen);
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GPU_texture_clear(color_texture, GPU_DATA_FLOAT, source_a);
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GPUBatch *batch = DRW_cache_quad_get();
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GPU_batch_program_set_builtin(batch, GPU_SHADER_3D_UNIFORM_COLOR);
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GPU_batch_uniform_4fv(batch, "color", source_b);
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GPU_blend(blend_type);
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GPU_batch_draw(batch);
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GPU_offscreen_unbind(offscreen, false);
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GPU_flush();
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float4 read_back;
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GPU_memory_barrier(GPU_BARRIER_TEXTURE_FETCH);
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GPU_offscreen_read_color(offscreen, GPU_DATA_FLOAT, &read_back);
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EXPECT_EQ(read_back, expected_result);
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GPU_offscreen_free(offscreen);
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DRW_shape_cache_free();
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}
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static void test_blend_none()
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{
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blend_test<GPU_BLEND_NONE>(float4(1.0f, 0.0f, 1.0f, 1.0f),
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float4(0.0f, 1.0f, 0.0f, 0.5f),
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float4(0.0f, 1.0f, 0.0f, 0.5f));
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}
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GPU_TEST(blend_none)
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static void test_blend_alpha()
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{
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blend_test<GPU_BLEND_ALPHA>(float4(1.0f, 0.0f, 1.0f, 1.0f),
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float4(0.0f, 1.0f, 0.0f, 0.5f),
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float4(0.5f, 0.5f, 0.5f, 1.0f));
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}
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GPU_TEST(blend_alpha)
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static void test_blend_alpha_premult()
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{
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blend_test<GPU_BLEND_ALPHA_PREMULT>(float4(1.0f, 0.0f, 1.0f, 1.0f),
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float4(0.0f, 1.0f, 0.0f, 0.5f),
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float4(0.5f, 1.0f, 0.5f, 1.0f));
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}
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GPU_TEST(blend_alpha_premult)
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static void test_blend_additive()
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{
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blend_test<GPU_BLEND_ADDITIVE>(float4(1.0f, 0.0f, 1.0f, 1.0f),
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float4(0.0f, 1.0f, 0.0f, 0.5f),
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float4(1.0f, 0.5f, 1.0f, 1.0f));
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}
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GPU_TEST(blend_additive)
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static void test_blend_additive_premult()
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{
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blend_test<GPU_BLEND_ADDITIVE_PREMULT>(float4(1.0f, 0.0f, 1.0f, 1.0f),
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float4(0.0f, 1.0f, 0.0f, 0.5f),
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float4(1.0f, 1.0f, 1.0f, 1.5f));
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}
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GPU_TEST(blend_additive_premult)
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static void test_blend_multiply()
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{
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blend_test<GPU_BLEND_MULTIPLY>(float4(1.0f, 0.0f, 1.0f, 1.0f),
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float4(0.0f, 1.0f, 0.0f, 0.5f),
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float4(0.0f, 0.0f, 0.0f, 0.5f));
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}
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GPU_TEST(blend_multiply)
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static void test_blend_subtract()
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{
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blend_test<GPU_BLEND_SUBTRACT>(float4(1.0f, 1.0f, 1.0f, 1.0f),
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float4(0.0f, 1.0f, 0.0f, 0.5f),
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float4(1.0f, 0.0f, 1.0f, 0.5f));
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}
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GPU_TEST(blend_subtract)
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static void test_blend_invert()
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{
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blend_test<GPU_BLEND_INVERT>(float4(1.0f, 1.0f, 1.0f, 1.0f),
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float4(0.0f, 1.0f, 0.0f, 0.5f),
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float4(0.0f, 0.0f, 0.0f, 1.0f));
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}
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GPU_TEST(blend_invert)
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static void test_blend_oit()
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{
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blend_test<GPU_BLEND_OIT>(float4(1.0f, 1.0f, 1.0f, 1.0f),
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float4(0.0f, 1.0f, 0.0f, 0.5f),
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float4(1.0f, 2.0f, 1.0f, 0.5f));
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}
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GPU_TEST(blend_oit)
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static void test_blend_background()
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{
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blend_test<GPU_BLEND_BACKGROUND>(float4(1.0f, 1.0f, 1.0f, 1.0f),
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float4(0.0f, 1.0f, 0.0f, 0.5f),
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float4(0.5f, 0.5f, 0.5f, 0.5f));
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}
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GPU_TEST(blend_background)
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} // namespace blender::gpu::tests
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