Adds the PBO extension test
BUG=angle:581
Change-Id: I50a1181d0547c5629c9037f6d8e989c505c7e5ed
Reviewed-on: https://chromium-review.googlesource.com/198239
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Tested-by: Shannon Woods <shannonwoods@chromium.org>
diff --git a/tests/angle_tests/PBOExtensionTest.cpp b/tests/angle_tests/PBOExtensionTest.cpp
new file mode 100755
index 0000000..73eae71
--- /dev/null
+++ b/tests/angle_tests/PBOExtensionTest.cpp
@@ -0,0 +1,143 @@
+#include "ANGLETest.h"
+
+class PBOExtensionTest : public ANGLETest
+{
+protected:
+ PBOExtensionTest()
+ {
+ setClientVersion(2);
+ setWindowWidth(32);
+ setWindowHeight(32);
+ setConfigRedBits(8);
+ setConfigGreenBits(8);
+ setConfigBlueBits(8);
+ setConfigAlphaBits(8);
+ }
+
+ virtual void SetUp()
+ {
+ ANGLETest::SetUp();
+
+ if (extensionEnabled("NV_pixel_buffer_object"))
+ {
+ glGenBuffers(1, &mPBO);
+ glBindBuffer(GL_PIXEL_PACK_BUFFER, mPBO);
+ glBufferData(GL_PIXEL_PACK_BUFFER, 4 * getWindowWidth() * getWindowHeight(), NULL, GL_STATIC_DRAW);
+ glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
+
+ const char *vertexShaderSrc = SHADER_SOURCE
+ (
+ attribute vec4 aTest;
+ attribute vec2 aPosition;
+ varying vec4 vTest;
+
+ void main()
+ {
+ vTest = aTest;
+ gl_Position = vec4(aPosition, 0.0, 1.0);
+ gl_PointSize = 1.0;
+ }
+ );
+
+ const char *fragmentShaderSrc = SHADER_SOURCE
+ (
+ precision mediump float;
+ varying vec4 vTest;
+
+ void main()
+ {
+ gl_FragColor = vTest;
+ }
+ );
+
+ mProgram = compileProgram(vertexShaderSrc, fragmentShaderSrc);
+
+ glGenBuffers(1, &mPositionVBO);
+ glBindBuffer(GL_ARRAY_BUFFER, mPositionVBO);
+ glBufferData(GL_ARRAY_BUFFER, 128, NULL, GL_DYNAMIC_DRAW);
+ glBindBuffer(GL_ARRAY_BUFFER, 0);
+ }
+ ASSERT_GL_NO_ERROR();
+ }
+
+ virtual void TearDown()
+ {
+ ANGLETest::TearDown();
+
+ glDeleteBuffers(1, &mPBO);
+ glDeleteProgram(mProgram);
+ }
+
+ GLuint mPBO;
+ GLuint mProgram;
+ GLuint mPositionVBO;
+};
+
+TEST_F(PBOExtensionTest, pbo_with_other_target)
+{
+ if (extensionEnabled("NV_pixel_buffer_object"))
+ {
+ glClearColor(1.0f, 0.0f, 0.0f, 1.0f);
+ glClear(GL_COLOR_BUFFER_BIT);
+ EXPECT_GL_NO_ERROR();
+
+ glBindBuffer(GL_PIXEL_PACK_BUFFER, mPBO);
+ glReadPixels(0, 0, 16, 16, GL_RGBA, GL_UNSIGNED_BYTE, 0);
+
+ glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
+ glBindBuffer(GL_ARRAY_BUFFER, mPBO);
+
+ GLvoid *mappedPtr = glMapBufferRangeEXT(GL_ARRAY_BUFFER, 0, 32, GL_MAP_READ_BIT);
+ unsigned char *dataPtr = static_cast<unsigned char *>(mappedPtr);
+ EXPECT_GL_NO_ERROR();
+
+ EXPECT_EQ(255, dataPtr[0]);
+ EXPECT_EQ(0, dataPtr[1]);
+ EXPECT_EQ(0, dataPtr[2]);
+ EXPECT_EQ(255, dataPtr[3]);
+
+ glUnmapBufferOES(GL_ARRAY_BUFFER);
+ }
+ EXPECT_GL_NO_ERROR();
+}
+
+TEST_F(PBOExtensionTest, pbo_with_existing_data)
+{
+ if (extensionEnabled("NV_pixel_buffer_object"))
+ {
+ // Clear backbuffer to red
+ glClearColor(1.0f, 0.0f, 0.0f, 1.0f);
+ glClear(GL_COLOR_BUFFER_BIT);
+ EXPECT_GL_NO_ERROR();
+
+ // Read 16x16 region from red backbuffer to PBO
+ glBindBuffer(GL_PIXEL_PACK_BUFFER, mPBO);
+ glReadPixels(0, 0, 16, 16, GL_RGBA, GL_UNSIGNED_BYTE, 0);
+
+ // Clear backbuffer to green
+ glClearColor(0.0f, 1.0f, 0.0f, 1.0f);
+ glClear(GL_COLOR_BUFFER_BIT);
+ EXPECT_GL_NO_ERROR();
+
+ // Read 16x16 region from green backbuffer to PBO at offset 16
+ glReadPixels(0, 0, 16, 16, GL_RGBA, GL_UNSIGNED_BYTE, reinterpret_cast<GLvoid*>(16));
+ GLvoid * mappedPtr = glMapBufferRangeEXT(GL_PIXEL_PACK_BUFFER, 0, 32, GL_MAP_READ_BIT);
+ unsigned char *dataPtr = static_cast<unsigned char *>(mappedPtr);
+ EXPECT_GL_NO_ERROR();
+
+ // Test pixel 0 is red (existing data)
+ EXPECT_EQ(255, dataPtr[0]);
+ EXPECT_EQ(0, dataPtr[1]);
+ EXPECT_EQ(0, dataPtr[2]);
+ EXPECT_EQ(255, dataPtr[3]);
+
+ // Test pixel 16 is green (new data)
+ EXPECT_EQ(0, dataPtr[16 * 4 + 0]);
+ EXPECT_EQ(255, dataPtr[16 * 4 + 1]);
+ EXPECT_EQ(0, dataPtr[16 * 4 + 2]);
+ EXPECT_EQ(255, dataPtr[16 * 4 + 3]);
+
+ glUnmapBufferOES(GL_PIXEL_PACK_BUFFER);
+ }
+ EXPECT_GL_NO_ERROR();
+}