blob: 911d66d5801bd9c50eff6dc835292e15c9310abb [file] [log] [blame]
/*-------------------------------------------------------------------------
* OpenGL Conformance Test Suite
* -----------------------------
*
* Copyright (c) 2014-2016 The Khronos Group Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/ /*!
* \file
* \brief
*/ /*-------------------------------------------------------------------*/
#include "glcSampleVariablesTests.hpp"
#include "deMath.h"
#include "deRandom.hpp"
#include "deStringUtil.hpp"
#include "gluContextInfo.hpp"
#include "gluDrawUtil.hpp"
#include "gluPixelTransfer.hpp"
#include "gluShaderProgram.hpp"
#include "glw.h"
#include "glwFunctions.hpp"
#include "tcuCommandLine.hpp"
#include "tcuStringTemplate.hpp"
#include "tcuSurface.hpp"
#include "tcuTestLog.hpp"
namespace tcu
{
static bool operator<(tcu::Vec4 const& k1, tcu::Vec4 const& k2)
{
if (k1.y() < k2.y())
{
return true;
}
else if (k1.y() == k2.y())
{
return k1.x() < k2.x();
}
else
{
return false;
}
}
}
namespace deqp
{
using tcu::TestLog;
using std::string;
using std::vector;
static std::string specializeVersion(std::string const& source, glu::GLSLVersion version,
std::string const& sampler = "", std::string const& outType = "")
{
DE_ASSERT(version == glu::GLSL_VERSION_310_ES || version >= glu::GLSL_VERSION_400);
std::map<std::string, std::string> args;
args["VERSION_DECL"] = glu::getGLSLVersionDeclaration(version);
args["SAMPLER"] = sampler;
args["OUT_TYPE"] = outType;
if (version == glu::GLSL_VERSION_310_ES)
{
args["OES_SV_RQ"] = "#extension GL_OES_sample_variables : require\n";
args["OES_SV_EN"] = "#extension GL_OES_sample_variables : enable\n";
}
else
{
args["OES_SV_RQ"] = "";
args["OES_SV_EN"] = "";
}
return tcu::StringTemplate(source.c_str()).specialize(args);
}
class SampleShadingExtensionCase : public TestCase
{
public:
SampleShadingExtensionCase(Context& context, const char* name, const char* description,
glu::GLSLVersion glslVersion);
~SampleShadingExtensionCase();
IterateResult iterate();
protected:
glu::GLSLVersion m_glslVersion;
};
SampleShadingExtensionCase::SampleShadingExtensionCase(Context& context, const char* name, const char* description,
glu::GLSLVersion glslVersion)
: TestCase(context, name, description), m_glslVersion(glslVersion)
{
DE_ASSERT(glslVersion == glu::GLSL_VERSION_310_ES);
}
SampleShadingExtensionCase::~SampleShadingExtensionCase()
{
}
SampleShadingExtensionCase::IterateResult SampleShadingExtensionCase::iterate()
{
TestLog& log = m_testCtx.getLog();
if (!m_context.getContextInfo().isExtensionSupported("GL_OES_sample_variables"))
{
m_testCtx.setTestResult(QP_TEST_RESULT_NOT_SUPPORTED, "GL_OES_sample_variables");
return STOP;
}
static char const* vss = "${VERSION_DECL}\n"
"in highp vec4 a_position;\n"
"void main()\n"
"{\n"
" gl_Position = a_position;\n"
"}\n";
{
static char const* fss = "${VERSION_DECL}\n"
"${OES_SV_RQ}"
"out highp vec4 o_color;\n"
"void main()\n"
"{\n"
" for (int i = 0; i < (gl_MaxSamples + 31) / 32; ++i) {\n"
" gl_SampleMask[i] = gl_SampleMaskIn[i];\n"
" }\n"
" o_color = vec4(gl_SampleID, gl_SamplePosition.x, gl_SamplePosition.y, 1);\n"
"}\n";
glu::ShaderProgram programRequire(m_context.getRenderContext(),
glu::makeVtxFragSources(specializeVersion(vss, m_glslVersion).c_str(),
specializeVersion(fss, m_glslVersion).c_str()));
log << programRequire;
if (!programRequire.isOk())
{
TCU_FAIL("Compile failed");
}
}
{
static char const* fss = "${VERSION_DECL}\n"
"${OES_SV_EN}"
"out highp vec4 o_color;\n"
"void main()\n"
"{\n"
"#if !GL_OES_sample_variables\n"
" this is broken\n"
"#endif\n"
" for (int i = 0; i < (gl_MaxSamples + 31) / 32; ++i) {\n"
" gl_SampleMask[i] = gl_SampleMaskIn[i];\n"
" }\n"
" o_color = vec4(gl_SampleID, gl_SamplePosition.x, gl_SamplePosition.y, 1);\n"
"}\n";
glu::ShaderProgram programEnable(m_context.getRenderContext(),
glu::makeVtxFragSources(specializeVersion(vss, m_glslVersion).c_str(),
specializeVersion(fss, m_glslVersion).c_str()));
log << programEnable;
if (!programEnable.isOk())
{
TCU_FAIL("Compile failed");
}
}
m_testCtx.setTestResult(QP_TEST_RESULT_PASS, "Pass");
return STOP;
}
class SampleShadingMaskCase : public TestCase
{
public:
SampleShadingMaskCase(Context& context, const char* name, const char* description, glu::GLSLVersion glslVersion,
GLenum internalFormat, tcu::TextureFormat const& texFormat, const char* sampler,
const char* outType, GLint samples, GLint sampleMask);
~SampleShadingMaskCase();
IterateResult iterate();
protected:
glu::GLSLVersion m_glslVersion;
GLenum m_internalFormat;
tcu::TextureFormat m_texFormat;
std::string m_sampler;
std::string m_outType;
GLint m_samples;
GLint m_sampleMask;
enum
{
WIDTH = 16,
HEIGHT = 16,
MAX_SAMPLES = 4,
};
};
SampleShadingMaskCase::SampleShadingMaskCase(Context& context, const char* name, const char* description,
glu::GLSLVersion glslVersion, GLenum internalFormat,
tcu::TextureFormat const& texFormat, const char* sampler,
const char* outType, GLint samples, GLint sampleMask)
: TestCase(context, name, description)
, m_glslVersion(glslVersion)
, m_internalFormat(internalFormat)
, m_texFormat(texFormat)
, m_sampler(sampler)
, m_outType(outType)
, m_samples(samples)
, m_sampleMask(sampleMask)
{
DE_ASSERT(glslVersion == glu::GLSL_VERSION_310_ES || glslVersion >= glu::GLSL_VERSION_400);
}
SampleShadingMaskCase::~SampleShadingMaskCase()
{
}
SampleShadingMaskCase::IterateResult SampleShadingMaskCase::iterate()
{
TestLog& log = m_testCtx.getLog();
const glw::Functions& gl = m_context.getRenderContext().getFunctions();
bool isOk = true;
bool supportsRgba32f = false;
if (m_glslVersion == glu::GLSL_VERSION_310_ES &&
!m_context.getContextInfo().isExtensionSupported("GL_OES_sample_variables"))
{
m_testCtx.setTestResult(QP_TEST_RESULT_NOT_SUPPORTED, "GL_OES_sample_variables");
return STOP;
}
supportsRgba32f = isContextTypeGLCore(m_context.getRenderContext().getType()) ?
true :
(m_context.getContextInfo().isExtensionSupported("GL_EXT_color_buffer_float") ||
m_context.getContextInfo().isExtensionSupported("GL_ARB_color_buffer_float"));
if (m_internalFormat == GL_RGBA32F && !supportsRgba32f)
{
m_testCtx.setTestResult(QP_TEST_RESULT_NOT_SUPPORTED, "Internalformat rgba32f not supported");
return STOP;
}
GLint maxSamples;
if (((m_texFormat.type == tcu::TextureFormat::FLOAT) && (m_texFormat.order == tcu::TextureFormat::RGBA)) ||
((m_texFormat.type == tcu::TextureFormat::FLOAT) && (m_texFormat.order == tcu::TextureFormat::RG)) ||
((m_texFormat.type == tcu::TextureFormat::FLOAT) && (m_texFormat.order == tcu::TextureFormat::R)) ||
((m_texFormat.type == tcu::TextureFormat::HALF_FLOAT) && (m_texFormat.order == tcu::TextureFormat::RGBA)))
{
gl.getInternalformativ(GL_TEXTURE_2D_MULTISAMPLE, m_internalFormat, GL_SAMPLES, 1, &maxSamples);
if (m_samples > maxSamples)
{
m_testCtx.setTestResult(QP_TEST_RESULT_NOT_SUPPORTED,
"Test sample count greater than samples that the format supports");
return STOP;
}
}
else if (m_texFormat.type == tcu::TextureFormat::SIGNED_INT8 ||
m_texFormat.type == tcu::TextureFormat::UNSIGNED_INT8)
{
gl.getIntegerv(GL_MAX_INTEGER_SAMPLES, &maxSamples);
if (m_samples > maxSamples)
{
m_testCtx.setTestResult(QP_TEST_RESULT_NOT_SUPPORTED, "Test sample count greater than MAX_INTEGER_SAMPLES");
return STOP;
}
}
else
{
gl.getIntegerv(GL_MAX_SAMPLES, &maxSamples);
if (m_samples > maxSamples)
{
m_testCtx.setTestResult(QP_TEST_RESULT_NOT_SUPPORTED, "Test sample count greater than MAX_SAMPLES");
return STOP;
}
}
// Create a multisample texture, or a regular texture if samples is zero.
GLuint tex;
gl.genTextures(1, &tex);
GLenum target;
if (m_samples)
{
target = GL_TEXTURE_2D_MULTISAMPLE;
gl.bindTexture(target, tex);
gl.texStorage2DMultisample(GL_TEXTURE_2D_MULTISAMPLE, m_samples, m_internalFormat, WIDTH, HEIGHT, GL_FALSE);
}
else
{
target = GL_TEXTURE_2D;
gl.bindTexture(target, tex);
gl.texStorage2D(GL_TEXTURE_2D, 1, m_internalFormat, WIDTH, HEIGHT);
if (m_texFormat.type == tcu::TextureFormat::SIGNED_INT8 ||
m_texFormat.type == tcu::TextureFormat::UNSIGNED_INT8 || m_texFormat.type == tcu::TextureFormat::FLOAT)
{
gl.texParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
gl.texParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
}
}
// Create a framebuffer with the texture attached and clear to "green".
GLuint fboMs;
gl.genFramebuffers(1, &fboMs);
gl.bindFramebuffer(GL_FRAMEBUFFER, fboMs);
gl.framebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, target, tex, 0);
gl.viewport(0, 0, WIDTH, HEIGHT);
if (m_texFormat.type == tcu::TextureFormat::SIGNED_INT8)
{
GLint color[4] = { 0, 1, 0, 1 };
gl.clearBufferiv(GL_COLOR, 0, color);
}
else if (m_texFormat.type == tcu::TextureFormat::UNSIGNED_INT8)
{
GLuint color[4] = { 0, 1, 0, 1 };
gl.clearBufferuiv(GL_COLOR, 0, color);
}
else
{
GLfloat color[4] = { 0.0f, 1.0f, 0.0f, 1.0f };
gl.clearBufferfv(GL_COLOR, 0, color);
}
static deUint16 const quadIndices[] = { 0, 1, 2, 2, 1, 3 };
{
// Draw a quad setting all samples to "red". We only expect "red"
// to be written if the sample mask bit for that sample is 1.
static char const* vss = "${VERSION_DECL}\n"
"in highp vec2 a_position;\n"
"void main()\n"
"{\n"
" gl_Position = vec4(a_position, 0.0, 1.0);\n"
"}\n";
static char const* fss = "${VERSION_DECL}\n"
"${OES_SV_RQ}"
"layout(location = 0) out highp ${OUT_TYPE} o_color;\n"
"uniform int u_sampleMask;\n"
"void main()\n"
"{\n"
" for (int i = 0; i < (gl_NumSamples + 31) / 32; ++i) {\n"
" gl_SampleMask[i] = u_sampleMask & gl_SampleMaskIn[i];\n"
" }\n"
" o_color = ${OUT_TYPE}(1, 0, 0, 1);\n"
"}\n";
glu::ShaderProgram program(
m_context.getRenderContext(),
glu::makeVtxFragSources(specializeVersion(vss, m_glslVersion, m_sampler, m_outType).c_str(),
specializeVersion(fss, m_glslVersion, m_sampler, m_outType).c_str()));
log << program;
if (!program.isOk())
{
TCU_FAIL("Compile failed");
}
static float const position[] = {
-1.0f, -1.0f, -1.0f, +1.0f, +1.0f, -1.0f, +1.0f, +1.0f,
};
gl.useProgram(program.getProgram());
gl.uniform1i(gl.getUniformLocation(program.getProgram(), "u_sampleMask"), m_sampleMask);
glu::VertexArrayBinding vertexArrays[] = {
glu::va::Float("a_position", 2, 4, 0, &position[0]),
};
glu::draw(m_context.getRenderContext(), program.getProgram(), DE_LENGTH_OF_ARRAY(vertexArrays),
&vertexArrays[0], glu::pr::TriangleStrip(DE_LENGTH_OF_ARRAY(quadIndices), &quadIndices[0]));
GLU_EXPECT_NO_ERROR(gl.getError(), "Draw quad");
}
gl.bindFramebuffer(GL_FRAMEBUFFER, m_context.getRenderContext().getDefaultFramebuffer());
gl.deleteFramebuffers(1, &fboMs);
GLsizei width = WIDTH * ((m_samples) ? m_samples : 1);
GLuint rbo;
gl.genRenderbuffers(1, &rbo);
gl.bindRenderbuffer(GL_RENDERBUFFER, rbo);
gl.renderbufferStorage(GL_RENDERBUFFER, m_internalFormat, width, HEIGHT);
GLuint fbo;
gl.genFramebuffers(1, &fbo);
gl.bindFramebuffer(GL_FRAMEBUFFER, fbo);
gl.framebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, rbo);
gl.viewport(0, 0, width, HEIGHT);
{
// Resolve the multi-sample texture into a render-buffer sized such that
// the width can hold all samples of a pixel.
static char const* vss = "${VERSION_DECL}\n"
"in highp vec2 a_position;\n"
"void main(void)\n"
"{\n"
" gl_Position = vec4(a_position, 0.0, 1.0);\n"
"}\n";
static char const* fss = "${VERSION_DECL}\n"
"uniform highp ${SAMPLER} u_tex;\n"
"uniform highp ${SAMPLER}MS u_texMS;\n"
"uniform int u_samples;\n"
"layout(location = 0) out highp ${OUT_TYPE} o_color;\n"
"void main(void)\n"
"{\n"
" if (u_samples > 0) {\n"
" ivec2 coord = ivec2(int(gl_FragCoord.x) / u_samples, gl_FragCoord.y);\n"
" int sampleId = int(gl_FragCoord.x) % u_samples;\n"
" o_color = texelFetch(u_texMS, coord, sampleId);\n"
" } else {\n"
" ivec2 coord = ivec2(gl_FragCoord.x, gl_FragCoord.y);\n"
" o_color = texelFetch(u_tex, coord, 0);\n"
" }\n"
"}\n";
glu::ShaderProgram program(
m_context.getRenderContext(),
glu::makeVtxFragSources(specializeVersion(vss, m_glslVersion, m_sampler, m_outType).c_str(),
specializeVersion(fss, m_glslVersion, m_sampler, m_outType).c_str()));
log << program;
if (!program.isOk())
{
TCU_FAIL("Compile failed");
}
static float const position[] = {
-1.0f, -1.0f, -1.0f, +1.0f, +1.0f, -1.0f, +1.0f, +1.0f,
};
gl.useProgram(program.getProgram());
gl.uniform1i(gl.getUniformLocation(program.getProgram(), "u_samples"), m_samples);
if (m_samples > 0)
{
// only MS sampler needed, TU 1 is not used
gl.uniform1i(gl.getUniformLocation(program.getProgram(), "u_tex"), 1);
gl.uniform1i(gl.getUniformLocation(program.getProgram(), "u_texMS"), 0);
}
else
{
// only non-MS sampler needed, TU 1 is not used
gl.uniform1i(gl.getUniformLocation(program.getProgram(), "u_tex"), 0);
gl.uniform1i(gl.getUniformLocation(program.getProgram(), "u_texMS"), 1);
}
glu::VertexArrayBinding vertexArrays[] = {
glu::va::Float("a_position", 2, 4, 0, &position[0]),
};
glu::draw(m_context.getRenderContext(), program.getProgram(), DE_LENGTH_OF_ARRAY(vertexArrays),
&vertexArrays[0], glu::pr::TriangleStrip(DE_LENGTH_OF_ARRAY(quadIndices), &quadIndices[0]));
GLU_EXPECT_NO_ERROR(gl.getError(), "Draw quad");
}
tcu::TextureLevel results(m_texFormat, width, HEIGHT);
tcu::PixelBufferAccess pixels = results.getAccess();
std::vector<tcu::Vec4> result(pixels.getHeight() * pixels.getWidth());
if (pixels.getFormat().type == tcu::TextureFormat::SIGNED_INT8)
{
std::vector<GLint> data(pixels.getHeight() * pixels.getWidth() * 4);
gl.readPixels(0, 0, pixels.getWidth(), pixels.getHeight(), GL_RGBA_INTEGER, GL_INT, &data[0]);
for (unsigned int i = 0; i < data.size(); i += 4)
{
result[i / 4] =
tcu::Vec4((GLfloat)data[i], (GLfloat)data[i + 1], (GLfloat)data[i + 2], (GLfloat)data[i + 3]);
}
}
else if (pixels.getFormat().type == tcu::TextureFormat::UNSIGNED_INT8)
{
std::vector<GLuint> data(pixels.getHeight() * pixels.getWidth() * 4);
gl.readPixels(0, 0, pixels.getWidth(), pixels.getHeight(), GL_RGBA_INTEGER, GL_UNSIGNED_INT, &data[0]);
for (unsigned int i = 0; i < data.size(); i += 4)
{
result[i / 4] =
tcu::Vec4((GLfloat)data[i], (GLfloat)data[i + 1], (GLfloat)data[i + 2], (GLfloat)data[i + 3]);
}
}
else
{
glu::readPixels(m_context.getRenderContext(), 0, 0, pixels);
}
for (int y = 0; y < HEIGHT; ++y)
{
for (int x = 0; x < WIDTH; ++x)
{
GLint samples = (m_samples) ? m_samples : 1;
for (int sample = 0; sample < samples; ++sample)
{
tcu::Vec4 pixel;
if (pixels.getFormat().type == tcu::TextureFormat::SIGNED_INT8 ||
pixels.getFormat().type == tcu::TextureFormat::UNSIGNED_INT8)
{
pixel = result[y * WIDTH + x * samples + sample];
}
else
{
pixel = pixels.getPixel(x * samples + sample, y);
}
// Make sure only those samples where the sample mask bit is
// non-zero have the "red" pixel values.
if (!m_samples || (m_sampleMask & (1 << sample)))
{
if (pixel != tcu::Vec4(1.0f, 0.0f, 0.0f, 1.0f))
{
isOk = false;
}
}
else
{
if (pixel != tcu::Vec4(0.0f, 1.0f, 0.0f, 1.0f))
{
isOk = false;
}
}
}
}
}
gl.bindFramebuffer(GL_FRAMEBUFFER, m_context.getRenderContext().getDefaultFramebuffer());
gl.deleteFramebuffers(1, &fbo);
gl.bindRenderbuffer(GL_RENDERBUFFER, 0);
gl.deleteRenderbuffers(1, &rbo);
gl.bindTexture(target, 0);
gl.deleteTextures(1, &tex);
m_testCtx.setTestResult(isOk ? QP_TEST_RESULT_PASS : QP_TEST_RESULT_FAIL, isOk ? "Pass" : "Fail");
return STOP;
}
class SampleShadingPositionCase : public TestCase
{
public:
SampleShadingPositionCase(Context& context, const char* name, const char* description, glu::GLSLVersion glslVersion,
GLint samples, GLboolean fixedSampleLocations);
~SampleShadingPositionCase();
IterateResult iterate();
protected:
glu::GLSLVersion m_glslVersion;
GLint m_samples;
GLboolean m_fixedSampleLocations;
enum
{
WIDTH = 8,
HEIGHT = 8,
MAX_SAMPLES = 8,
};
};
SampleShadingPositionCase::SampleShadingPositionCase(Context& context, const char* name, const char* description,
glu::GLSLVersion glslVersion, GLint samples,
GLboolean fixedSampleLocations)
: TestCase(context, name, description)
, m_glslVersion(glslVersion)
, m_samples(samples)
, m_fixedSampleLocations(fixedSampleLocations)
{
DE_ASSERT(glslVersion == glu::GLSL_VERSION_310_ES || glslVersion >= glu::GLSL_VERSION_400);
}
SampleShadingPositionCase::~SampleShadingPositionCase()
{
}
SampleShadingPositionCase::IterateResult SampleShadingPositionCase::iterate()
{
TestLog& log = m_testCtx.getLog();
const glw::Functions& gl = m_context.getRenderContext().getFunctions();
bool isOk = true;
if (m_glslVersion == glu::GLSL_VERSION_310_ES &&
!m_context.getContextInfo().isExtensionSupported("GL_OES_sample_variables"))
{
m_testCtx.setTestResult(QP_TEST_RESULT_NOT_SUPPORTED, "GL_OES_sample_variables");
return STOP;
}
GLint maxSamples;
gl.getIntegerv(GL_MAX_SAMPLES, &maxSamples);
if (m_samples > maxSamples)
{
m_testCtx.setTestResult(QP_TEST_RESULT_NOT_SUPPORTED, "Test sample count great than MAX_SAMPLES");
return STOP;
}
// Create a multisample texture, or a regular texture if samples is zero.
GLuint tex;
gl.genTextures(1, &tex);
GLenum target;
if (m_samples)
{
target = GL_TEXTURE_2D_MULTISAMPLE;
gl.bindTexture(target, tex);
gl.texStorage2DMultisample(GL_TEXTURE_2D_MULTISAMPLE, m_samples, GL_RGBA8, WIDTH, HEIGHT,
m_fixedSampleLocations);
}
else
{
target = GL_TEXTURE_2D;
gl.bindTexture(target, tex);
gl.texStorage2D(GL_TEXTURE_2D, 1, GL_RGBA8, WIDTH, HEIGHT);
}
// Attach the texture to the framebuffer to render to it.
GLuint fboMs;
gl.genFramebuffers(1, &fboMs);
gl.bindFramebuffer(GL_FRAMEBUFFER, fboMs);
gl.framebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, target, tex, 0);
gl.viewport(0, 0, WIDTH, HEIGHT);
// Save all the sample positions for this multisample framebuffer.
std::vector<tcu::Vec4> samplePositions;
if (m_samples)
{
samplePositions.resize(m_samples);
for (int sample = 0; sample < m_samples; ++sample)
{
GLfloat position[2];
gl.getMultisamplefv(GL_SAMPLE_POSITION, sample, position);
samplePositions[sample] = tcu::Vec4(position[0], position[1], 0.0f, 1.0f);
}
}
static deUint16 const quadIndices[] = { 0, 1, 2, 2, 1, 3 };
{
// Render all the sample positions to each pixel sample.
static char const* vss = "${VERSION_DECL}\n"
"in highp vec2 a_position;\n"
"void main()\n"
"{\n"
" gl_Position = vec4(a_position, 0.0, 1.0);\n"
"}\n";
static char const* fss = "${VERSION_DECL}\n"
"${OES_SV_RQ}"
"layout(location = 0) out highp vec4 o_color;\n"
"void main()\n"
"{\n"
" o_color = vec4(gl_SamplePosition, 0, 1);\n"
"}\n";
glu::ShaderProgram program(m_context.getRenderContext(),
glu::makeVtxFragSources(specializeVersion(vss, m_glslVersion).c_str(),
specializeVersion(fss, m_glslVersion).c_str()));
log << program;
if (!program.isOk())
{
TCU_FAIL("Compile failed");
}
const float position[] = {
-1.0f, -1.0f, -1.0f, +1.0f, +1.0f, -1.0f, +1.0f, +1.0f,
};
gl.useProgram(program.getProgram());
glu::VertexArrayBinding vertexArrays[] = {
glu::va::Float("a_position", 2, 4, 0, &position[0]),
};
glu::draw(m_context.getRenderContext(), program.getProgram(), DE_LENGTH_OF_ARRAY(vertexArrays),
&vertexArrays[0], glu::pr::TriangleStrip(DE_LENGTH_OF_ARRAY(quadIndices), &quadIndices[0]));
GLU_EXPECT_NO_ERROR(gl.getError(), "Draw quad");
}
gl.bindFramebuffer(GL_FRAMEBUFFER, m_context.getRenderContext().getDefaultFramebuffer());
gl.deleteFramebuffers(1, &fboMs);
// Create a regular non-multisample render buffer to resolve to multisample texture into.
// The width is increased to save all samples of the pixel.
GLsizei width = WIDTH * ((m_samples) ? m_samples : 1);
GLuint rbo;
gl.genRenderbuffers(1, &rbo);
gl.bindRenderbuffer(GL_RENDERBUFFER, rbo);
gl.renderbufferStorage(GL_RENDERBUFFER, GL_RGBA8, width, HEIGHT);
GLuint fbo;
gl.genFramebuffers(1, &fbo);
gl.bindFramebuffer(GL_FRAMEBUFFER, fbo);
gl.framebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, rbo);
gl.viewport(0, 0, width, HEIGHT);
{
// Resolve the multisample texture to the renderbuffer.
static char const* vss = "${VERSION_DECL}\n"
"in highp vec2 a_position;\n"
"void main(void)\n"
"{\n"
" gl_Position = vec4(a_position, 0.0, 1.0);\n"
"}\n";
static char const* fss = "${VERSION_DECL}\n"
"uniform highp sampler2D u_tex;\n"
"uniform highp sampler2DMS u_texMS;\n"
"uniform int u_samples;\n"
"layout(location = 0) out highp vec4 o_color;\n"
"void main(void)\n"
"{\n"
" if (u_samples > 0) {\n"
" ivec2 coord = ivec2(int(gl_FragCoord.x) / u_samples, gl_FragCoord.y);\n"
" int sampleId = int(gl_FragCoord.x) % u_samples;\n"
" o_color = texelFetch(u_texMS, coord, sampleId);\n"
" } else {\n"
" ivec2 coord = ivec2(gl_FragCoord.x, gl_FragCoord.y);\n"
" o_color = texelFetch(u_tex, coord, 0);\n"
" }\n"
"}\n";
glu::ShaderProgram program(m_context.getRenderContext(),
glu::makeVtxFragSources(specializeVersion(vss, m_glslVersion).c_str(),
specializeVersion(fss, m_glslVersion).c_str()));
log << program;
if (!program.isOk())
{
TCU_FAIL("Compile failed");
}
static float const position[] = {
-1.0f, -1.0f, -1.0f, +1.0f, +1.0f, -1.0f, +1.0f, +1.0f,
};
gl.useProgram(program.getProgram());
gl.uniform1i(gl.getUniformLocation(program.getProgram(), "u_samples"), m_samples);
if (m_samples > 0)
{
// only MS sampler needed, TU 1 is not used
gl.uniform1i(gl.getUniformLocation(program.getProgram(), "u_tex"), 1);
gl.uniform1i(gl.getUniformLocation(program.getProgram(), "u_texMS"), 0);
}
else
{
// only non-MS sampler needed, TU 1 is not used
gl.uniform1i(gl.getUniformLocation(program.getProgram(), "u_tex"), 0);
gl.uniform1i(gl.getUniformLocation(program.getProgram(), "u_texMS"), 1);
}
glu::VertexArrayBinding vertexArrays[] = {
glu::va::Float("a_position", 2, 4, 0, &position[0]),
};
glu::draw(m_context.getRenderContext(), program.getProgram(), DE_LENGTH_OF_ARRAY(vertexArrays),
&vertexArrays[0], glu::pr::TriangleStrip(DE_LENGTH_OF_ARRAY(quadIndices), &quadIndices[0]));
GLU_EXPECT_NO_ERROR(gl.getError(), "Draw quad");
}
// Read the renderbuffer pixels and verify we get back what we're expecting.
tcu::TextureLevel results(tcu::TextureFormat(tcu::TextureFormat::RGBA, tcu::TextureFormat::UNORM_INT8), width,
HEIGHT);
tcu::PixelBufferAccess pixels = results.getAccess();
glu::readPixels(m_context.getRenderContext(), 0, 0, pixels);
if (m_samples)
{
// If m_fixedSampleLocations are used make sure the first pixel's samples
// all match the SAMPLE_POSITION state saved earlier.
std::set<tcu::Vec4> fixedSampleLocations;
if (m_fixedSampleLocations)
{
for (int sample = 0; sample < m_samples; ++sample)
{
tcu::Vec4 pixel = pixels.getPixel(sample, 0);
fixedSampleLocations.insert(pixel);
if (deFloatAbs(pixel.x() - samplePositions[sample].x()) > 0.01 ||
deFloatAbs(pixel.y() - samplePositions[sample].y()) > 0.01)
{
isOk = false;
}
}
}
// Verify all samples of every pixel to make sure each position is unique.
for (int y = 0; y < HEIGHT; ++y)
{
for (int x = 0; x < WIDTH; ++x)
{
std::set<tcu::Vec4> uniquePixels;
for (int sample = 0; sample < m_samples; ++sample)
{
uniquePixels.insert(pixels.getPixel(x * m_samples + sample, y));
}
if ((GLint)uniquePixels.size() != m_samples)
{
isOk = false;
}
// For the m_fixedSampleLocations case make sure each position
// matches the sample positions of pixel(0, 0) saved earlier.
if (m_fixedSampleLocations)
{
if (fixedSampleLocations != uniquePixels)
{
isOk = false;
}
}
}
}
}
else
{
// For the non-multisample case make sure all the positions are (0.5,0.5).
for (int y = 0; y < pixels.getHeight(); ++y)
{
for (int x = 0; x < pixels.getWidth(); ++x)
{
tcu::Vec4 pixel = pixels.getPixel(x, y);
if (deFloatAbs(pixel.x() - 0.5f) > 0.01 || deFloatAbs(pixel.y() - 0.5f) > 0.01 || pixel.z() != 0.0f ||
pixel.w() != 1.0f)
{
isOk = false;
}
}
}
}
gl.bindFramebuffer(GL_FRAMEBUFFER, m_context.getRenderContext().getDefaultFramebuffer());
gl.deleteFramebuffers(1, &fbo);
gl.bindRenderbuffer(GL_RENDERBUFFER, 0);
gl.deleteRenderbuffers(1, &rbo);
gl.bindTexture(target, 0);
gl.deleteTextures(1, &tex);
m_testCtx.setTestResult(isOk ? QP_TEST_RESULT_PASS : QP_TEST_RESULT_FAIL, isOk ? "Pass" : "Fail");
return STOP;
}
SampleVariablesTests::SampleVariablesTests(Context& context, glu::GLSLVersion glslVersion)
: TestCaseGroup(context, "sample_variables", "Sample Variables tests"), m_glslVersion(glslVersion)
{
}
SampleVariablesTests::~SampleVariablesTests()
{
}
void SampleVariablesTests::init()
{
de::Random rnd(m_context.getTestContext().getCommandLine().getBaseSeed());
struct Sample
{
char const* name;
GLint samples;
} samples[] = {
{ "samples_0", 0 }, { "samples_1", 1 }, { "samples_2", 2 }, { "samples_4", 4 }, { "samples_8", 8 },
};
// sample_variables.extension
if (m_glslVersion == glu::GLSL_VERSION_310_ES)
{
tcu::TestCaseGroup* extensionCaseGroup = new tcu::TestCaseGroup(m_testCtx, "verification", "");
extensionCaseGroup->addChild(
new SampleShadingExtensionCase(m_context, "extension", "#extension verification", m_glslVersion));
addChild(extensionCaseGroup);
}
// sample_variables.mask
tcu::TestCaseGroup* maskGroup = new tcu::TestCaseGroup(m_testCtx, "mask", "gl_SampleMask tests");
addChild(maskGroup);
struct Format
{
char const* name;
GLenum internalFormat;
tcu::TextureFormat textureFormat;
char const* sampler;
char const* outType;
} formats[] = {
{ "rgba8", GL_RGBA8, tcu::TextureFormat(tcu::TextureFormat::RGBA, tcu::TextureFormat::UNORM_INT8), "sampler2D",
"vec4" },
{ "rgba8i", GL_RGBA8I, tcu::TextureFormat(tcu::TextureFormat::RGBA, tcu::TextureFormat::SIGNED_INT8),
"isampler2D", "ivec4" },
{ "rgba8ui", GL_RGBA8UI, tcu::TextureFormat(tcu::TextureFormat::RGBA, tcu::TextureFormat::UNSIGNED_INT8),
"usampler2D", "uvec4" },
{ "rgba32f", GL_RGBA32F, tcu::TextureFormat(tcu::TextureFormat::RGBA, tcu::TextureFormat::FLOAT), "sampler2D",
"vec4" },
};
for (int format = 0; format < DE_LENGTH_OF_ARRAY(formats); ++format)
{
tcu::TestCaseGroup* maskFormatGroup = new tcu::TestCaseGroup(m_testCtx, formats[format].name, "");
maskGroup->addChild(maskFormatGroup);
for (int sample = 0; sample < DE_LENGTH_OF_ARRAY(samples); ++sample)
{
tcu::TestCaseGroup* maskFormatSampleGroup = new tcu::TestCaseGroup(m_testCtx, samples[sample].name, "");
maskFormatGroup->addChild(maskFormatSampleGroup);
maskFormatSampleGroup->addChild(
new SampleShadingMaskCase(m_context, "mask_zero", "", m_glslVersion, formats[format].internalFormat,
formats[format].textureFormat, formats[format].sampler,
formats[format].outType, samples[sample].samples, 0));
for (int mask = 0; mask < SAMPLE_MASKS; ++mask)
{
std::stringstream ss;
ss << "mask_" << mask;
maskFormatSampleGroup->addChild(new SampleShadingMaskCase(
m_context, ss.str().c_str(), "", m_glslVersion, formats[format].internalFormat,
formats[format].textureFormat, formats[format].sampler, formats[format].outType,
samples[sample].samples, rnd.getUint32()));
}
}
}
// sample_variables.position
tcu::TestCaseGroup* positionGroup = new tcu::TestCaseGroup(m_testCtx, "position", "gl_SamplePosition tests");
addChild(positionGroup);
struct Fixed
{
char const* name;
GLboolean fixedSampleLocations;
} fixed[] = {
{ "non-fixed", GL_FALSE }, { "fixed", GL_TRUE },
};
for (int j = 0; j < DE_LENGTH_OF_ARRAY(fixed); ++j)
{
tcu::TestCaseGroup* positionFixedGroup = new tcu::TestCaseGroup(m_testCtx, fixed[j].name, "");
positionGroup->addChild(positionFixedGroup);
for (int sample = 0; sample < DE_LENGTH_OF_ARRAY(samples); ++sample)
{
positionFixedGroup->addChild(new SampleShadingPositionCase(m_context, samples[sample].name, "",
m_glslVersion, samples[sample].samples,
fixed[j].fixedSampleLocations));
}
}
}
} // glcts