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Factor out gl_texture_util

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PiperOrigin-RevId: 488797985
This commit is contained in:
Camillo Lugaresi 2022-11-15 17:07:26 -08:00 committed by Copybara-Service
parent 77b3edbb67
commit 4bda012bba
4 changed files with 81 additions and 46 deletions
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11
mediapipe/gpu/BUILD
View File

@ -689,6 +689,17 @@ cc_library(
}),
)
cc_library(
name = "gl_texture_util",
srcs = ["gl_texture_util.cc"],
hdrs = ["gl_texture_util.h"],
visibility = ["//visibility:public"],
deps = [
":gl_base",
":gl_texture_view",
],
)
cc_library(
name = "shader_util",
srcs = ["shader_util.cc"],

30
mediapipe/gpu/gl_texture_util.cc Normal file
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@ -0,0 +1,30 @@
#include "mediapipe/gpu/gl_texture_util.h"
namespace mediapipe {
void CopyGlTexture(const GlTextureView& src, GlTextureView& dst) {
glViewport(0, 0, src.width(), src.height());
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, src.target(),
src.name(), 0);
glActiveTexture(GL_TEXTURE0);
glBindTexture(dst.target(), dst.name());
glCopyTexSubImage2D(dst.target(), 0, 0, 0, 0, 0, dst.width(), dst.height());
glBindTexture(dst.target(), 0);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, src.target(), 0,
0);
}
void FillGlTextureRgba(GlTextureView& view, float r, float g, float b,
float a) {
glViewport(0, 0, view.width(), view.height());
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, view.target(),
view.name(), 0);
glClearColor(r, g, b, a);
glClear(GL_COLOR_BUFFER_BIT);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, view.target(), 0,
0);
}
} // namespace mediapipe

34
mediapipe/gpu/gl_texture_util.h Normal file
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@ -0,0 +1,34 @@
#ifndef MEDIAPIPE_GPU_GL_TEXTURE_UTIL_H_
#define MEDIAPIPE_GPU_GL_TEXTURE_UTIL_H_
#include "mediapipe/gpu/gl_base.h"
#include "mediapipe/gpu/gl_texture_view.h"
namespace mediapipe {
// Copies a texture to another.
// Assumes a framebuffer is already set up
void CopyGlTexture(const GlTextureView& src, GlTextureView& dst);
// Fills a texture with a color.
void FillGlTextureRgba(GlTextureView& view, float r, float g, float b, float a);
// RAII class to set up a temporary framebuffer. Mainly for test use.
class TempGlFramebuffer {
public:
TempGlFramebuffer() {
glGenFramebuffers(1, &framebuffer_);
glBindFramebuffer(GL_FRAMEBUFFER, framebuffer_);
}
~TempGlFramebuffer() {
glBindFramebuffer(GL_FRAMEBUFFER, 0);
glDeleteFramebuffers(1, &framebuffer_);
}
private:
GLuint framebuffer_;
};
} // namespace mediapipe
#endif // MEDIAPIPE_GPU_GL_TEXTURE_UTIL_H_

52
mediapipe/gpu/gpu_buffer_test.cc
View File

@ -18,6 +18,7 @@
#include "mediapipe/framework/port/gmock.h"
#include "mediapipe/framework/port/gtest.h"
#include "mediapipe/framework/tool/test_util.h"
#include "mediapipe/gpu/gl_texture_util.h"
#include "mediapipe/gpu/gpu_buffer_storage_ahwb.h"
#include "mediapipe/gpu/gpu_buffer_storage_image_frame.h"
#include "mediapipe/gpu/gpu_test_base.h"
@ -41,47 +42,6 @@ void FillImageFrameRGBA(ImageFrame& image, uint8 r, uint8 g, uint8 b, uint8 a) {
}
}
// Assumes a framebuffer is already set up
void CopyGlTexture(const GlTextureView& src, GlTextureView& dst) {
glViewport(0, 0, src.width(), src.height());
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, src.target(),
src.name(), 0);
glActiveTexture(GL_TEXTURE0);
glBindTexture(dst.target(), dst.name());
glCopyTexSubImage2D(dst.target(), 0, 0, 0, 0, 0, dst.width(), dst.height());
glBindTexture(dst.target(), 0);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, src.target(), 0,
0);
}
void FillGlTextureRgba(GlTextureView& view, float r, float g, float b,
float a) {
glViewport(0, 0, view.width(), view.height());
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, view.target(),
view.name(), 0);
glClearColor(r, g, b, a);
glClear(GL_COLOR_BUFFER_BIT);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, view.target(), 0,
0);
}
class TempGlFramebuffer {
public:
TempGlFramebuffer() {
glGenFramebuffers(1, &framebuffer_);
glBindFramebuffer(GL_FRAMEBUFFER, framebuffer_);
}
~TempGlFramebuffer() {
glBindFramebuffer(GL_FRAMEBUFFER, 0);
glDeleteFramebuffers(1, &framebuffer_);
}
private:
GLuint framebuffer_;
};
class GpuBufferTest : public GpuTestBase {};
TEST_F(GpuBufferTest, BasicTest) {
@ -127,7 +87,7 @@ TEST_F(GpuBufferTest, GlTextureView) {
ImageFrame red(ImageFormat::SRGBA, 300, 200);
FillImageFrameRGBA(red, 255, 0, 0, 255);
EXPECT_TRUE(mediapipe::CompareImageFrames(*view, red, 0.0, 0.0));
EXPECT_TRUE(CompareImageFrames(*view, red, 0.0, 0.0));
MP_EXPECT_OK(SavePngTestOutput(red, "gltv_red_gold"));
MP_EXPECT_OK(SavePngTestOutput(*view, "gltv_red_view"));
}
@ -162,7 +122,7 @@ TEST_F(GpuBufferTest, ImageFrame) {
ImageFrame red(ImageFormat::SRGBA, 300, 200);
FillImageFrameRGBA(red, 255, 0, 0, 255);
EXPECT_TRUE(mediapipe::CompareImageFrames(*view, red, 0.0, 0.0));
EXPECT_TRUE(CompareImageFrames(*view, red, 0.0, 0.0));
MP_EXPECT_OK(SavePngTestOutput(red, "if_red_gold"));
MP_EXPECT_OK(SavePngTestOutput(*view, "if_red_view"));
}
@ -196,7 +156,7 @@ TEST_F(GpuBufferTest, Overwrite) {
ImageFrame red(ImageFormat::SRGBA, 300, 200);
FillImageFrameRGBA(red, 255, 0, 0, 255);
EXPECT_TRUE(mediapipe::CompareImageFrames(*view, red, 0.0, 0.0));
EXPECT_TRUE(CompareImageFrames(*view, red, 0.0, 0.0));
MP_EXPECT_OK(SavePngTestOutput(red, "ow_red_gold"));
MP_EXPECT_OK(SavePngTestOutput(*view, "ow_red_view"));
}
@ -230,7 +190,7 @@ TEST_F(GpuBufferTest, Overwrite) {
ImageFrame green(ImageFormat::SRGBA, 300, 200);
FillImageFrameRGBA(green, 0, 255, 0, 255);
EXPECT_TRUE(mediapipe::CompareImageFrames(*view, green, 0.0, 0.0));
EXPECT_TRUE(CompareImageFrames(*view, green, 0.0, 0.0));
MP_EXPECT_OK(SavePngTestOutput(green, "ow_green_gold"));
MP_EXPECT_OK(SavePngTestOutput(*view, "ow_green_view"));
}
@ -240,7 +200,7 @@ TEST_F(GpuBufferTest, Overwrite) {
ImageFrame blue(ImageFormat::SRGBA, 300, 200);
FillImageFrameRGBA(blue, 0, 0, 255, 255);
EXPECT_TRUE(mediapipe::CompareImageFrames(*view, blue, 0.0, 0.0));
EXPECT_TRUE(CompareImageFrames(*view, blue, 0.0, 0.0));
MP_EXPECT_OK(SavePngTestOutput(blue, "ow_blue_gold"));
MP_EXPECT_OK(SavePngTestOutput(*view, "ow_blue_view"));
}