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
127 lines
4.1 KiB
C++
127 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_framebuffer.h"
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#include "GPU_immediate.h"
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#include "GPU_shader_builtin.h"
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#include "gpu_testing.hh"
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#include "BLI_math_vector.hh"
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namespace blender::gpu::tests {
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static constexpr int Size = 256;
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static void test_immediate_one_plane()
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{
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GPUOffScreen *offscreen = GPU_offscreen_create(Size,
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Size,
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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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GPUVertFormat *format = immVertexFormat();
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uint pos = GPU_vertformat_attr_add(format, "pos", GPU_COMP_F32, 3, GPU_FETCH_FLOAT);
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immBindBuiltinProgram(GPU_SHADER_3D_UNIFORM_COLOR);
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float4 color(1.0, 0.5, 0.25, 1.0);
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immUniformColor4fv(color);
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immBegin(GPU_PRIM_TRI_STRIP, 4);
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immVertex3f(pos, -1.0f, 1.0f, 0.0f);
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immVertex3f(pos, 1.0f, 1.0f, 0.0f);
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immVertex3f(pos, -1.0f, -1.0f, 0.0f);
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immVertex3f(pos, 1.0f, -1.0f, 0.0f);
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immEnd();
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GPU_offscreen_unbind(offscreen, false);
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GPU_flush();
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/* Read back data and perform some basic tests. */
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float read_data[4 * Size * Size];
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GPU_offscreen_read_color(offscreen, GPU_DATA_FLOAT, &read_data);
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for (int pixel_index = 0; pixel_index < Size * Size; pixel_index++) {
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float4 read_color = float4(&read_data[pixel_index * 4]);
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EXPECT_EQ(read_color, color);
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}
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GPU_offscreen_free(offscreen);
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}
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GPU_TEST(immediate_one_plane)
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/**
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* Draws two planes with two different colors.
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* - Tests that both planes are stored in the same buffer (depends on backend).
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* - Test that data of the first plane isn't overwritten by the second plane.
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* (push constants, buffer, bind points etc.)
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*/
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static void test_immediate_two_planes()
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{
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GPUOffScreen *offscreen = GPU_offscreen_create(Size,
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Size,
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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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GPUVertFormat *format = immVertexFormat();
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uint pos = GPU_vertformat_attr_add(format, "pos", GPU_COMP_F32, 3, GPU_FETCH_FLOAT);
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immBindBuiltinProgram(GPU_SHADER_3D_UNIFORM_COLOR);
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float4 color(1.0, 0.5, 0.25, 1.0);
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immUniformColor4fv(color);
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immBegin(GPU_PRIM_TRI_STRIP, 4);
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immVertex3f(pos, -1.0f, 1.0f, 0.0f);
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immVertex3f(pos, 0.0f, 1.0f, 0.0f);
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immVertex3f(pos, -1.0f, -1.0f, 0.0f);
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immVertex3f(pos, 0.0f, -1.0f, 0.0f);
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immEnd();
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float4 color2(0.25, 0.5, 1.0, 1.0);
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immUniformColor4fv(color2);
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immBegin(GPU_PRIM_TRI_STRIP, 4);
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immVertex3f(pos, 0.0f, 1.0f, 0.0f);
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immVertex3f(pos, 1.0f, 1.0f, 0.0f);
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immVertex3f(pos, 0.0f, -1.0f, 0.0f);
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immVertex3f(pos, 1.0f, -1.0f, 0.0f);
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immEnd();
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GPU_offscreen_unbind(offscreen, false);
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GPU_flush();
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/* Read back data and perform some basic tests.
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* Not performing detailed tests as there might be driver specific limitations. */
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float read_data[4 * Size * Size];
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GPU_offscreen_read_color(offscreen, GPU_DATA_FLOAT, &read_data);
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int64_t color_num = 0;
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int64_t color2_num = 0;
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for (int pixel_index = 0; pixel_index < Size * Size; pixel_index++) {
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float4 read_color = float4(&read_data[pixel_index * 4]);
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if (read_color == color) {
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color_num++;
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}
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else if (read_color == color2) {
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color2_num++;
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}
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else {
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EXPECT_TRUE(read_color == color || read_color == color2);
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}
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}
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EXPECT_TRUE(color_num > 0);
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EXPECT_TRUE(color2_num > 0);
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GPU_offscreen_free(offscreen);
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}
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GPU_TEST(immediate_two_planes)
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} // namespace blender::gpu::tests
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