virtual void startup()
{
static const GLubyte toon_tex_data[] =
{
0x44, 0x00, 0x00, 0x00,
0x88, 0x00, 0x00, 0x00,
0xCC, 0x00, 0x00, 0x00,
0xFF, 0x00, 0x00, 0x00
};
glGenTextures(1, &tex_toon);
glBindTexture(GL_TEXTURE_1D, tex_toon);
glTexStorage1D(GL_TEXTURE_1D, 1, GL_RGB8, sizeof(toon_tex_data) / 4);
glTexSubImage1D(GL_TEXTURE_1D, 0,
0, sizeof(toon_tex_data) / 4,
GL_RGBA, GL_UNSIGNED_BYTE,
toon_tex_data);
glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
object.load("media/objects/torus_nrms_tc.sbm");
load_shaders();
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LEQUAL);
}
void startup()
{
// _renderingProgram.CreateAndLinkProgram("Shaders/Common/Default.vert", "Shaders/Common/Default.frag");
_renderingProgram.CreateProgram();
_renderingProgram.AttachShader("Shaders/Cellshading/Cellshading.vert");
_renderingProgram.AttachShader("Shaders/Cellshading/Cellshading.frag");
_renderingProgram.Link();
projLocation = glGetUniformLocation(_renderingProgram.GetHandler(), "proj_matrix");
mvLocation = glGetUniformLocation(_renderingProgram.GetHandler(), "mv_matrix");
static const GLubyte tex[] =
{
0x44, 0x00, 0x00, 0x00,
0x88, 0x00, 0x00, 0x00,
0xCC, 0x00, 0x00, 0x00,
0xFF, 0x00, 0x00, 0x00
};
glGenTextures(1, &_texToon);
glBindTexture(GL_TEXTURE_1D, _texToon);
glTexStorage1D(GL_TEXTURE_1D, 1, GL_RGB8, sizeof(tex) / 4);
glTexSubImage1D(GL_TEXTURE_1D, 0, 0, sizeof(tex) / 4, GL_RGBA, GL_UNSIGNED_BYTE, tex);
glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
_object.load("media/objects/torus_nrms_tc.sbm");
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LEQUAL);
_renderingProgram.Use();
}
void QOpenGLTextureHelper::qt_TextureStorage1D(GLuint texture, GLenum target, GLenum bindingTarget, GLsizei levels, GLenum internalFormat, GLsizei width)
{
GLint oldTexture;
glGetIntegerv(bindingTarget, &oldTexture);
glBindTexture(target, texture);
glTexStorage1D(target, levels, internalFormat, width);
glBindTexture(target, oldTexture);
}
void AbstractTexture::storageImplementationDefault(GLenum target, GLsizei levels, AbstractTexture::InternalFormat internalFormat, const Math::Vector< 1, GLsizei >& size) {
bindInternal();
/** @todo Re-enable when extension wrangler is available for ES2 */
#ifndef MAGNUM_TARGET_GLES2
glTexStorage1D(target, levels, GLenum(internalFormat), size[0]);
#else
//glTexStorage2DEXT(target, levels, GLenum(internalFormat), size.x(), size.y());
static_cast<void>(target);
static_cast<void>(levels);
static_cast<void>(internalFormat);
static_cast<void>(size);
#endif
}
void Texture::SetStorage(int width, int height, int depth, int levels){
switch(type){
case TT_GL_TEXTURE_1D:
GLCALL(glTexStorage1D(type, levels, format, width));
break;
case TT_GL_TEXTURE_2D:
case TT_GL_TEXTURE_1D_ARRAY:
case TT_GL_TEXTURE_RECTANGLE:
case TT_GL_TEXTURE_CUBE_MAP:
GLCALL(glTexStorage2D(type, levels, format, width, height));
break;
case TT_GL_TEXTURE_3D:
case TT_GL_TEXTURE_2D_ARRAY:
case TT_GL_TEXTURE_CUBE_MAP_ARRAY:
GLCALL(glTexStorage3D(type, levels, format, width, height, depth));
break;
}
}
PlatformTexture1d::PlatformTexture1d(const Texture1d *texture) :
PlatformTexture(texture)
{
// Bind newly created texture
GLuint textureBindingPrevious = BindTexture(mTexturePtr->mType, mTextureObj);
{
glTexStorage1D(GL_TEXTURE_1D, 1, mFormatInternal, mDimension[0]);
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, mBufferObj);
{
glTexSubImage1D(GL_TEXTURE_1D, 0, 0, mDimension[0], mFormat, mType, nullptr);
}
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
}
// Restore previous texture binding
BindTexture(mTexturePtr->mType, textureBindingPrevious);
}
void startup(void)
{
// Load texture from file
tex_src = sb6::ktx::file::load("media/textures/treelights_2k.ktx");
// Now bind it to the context using the GL_TEXTURE_2D binding point
glBindTexture(GL_TEXTURE_2D, tex_src);
glGenVertexArrays(1, &vao);
glBindVertexArray(vao);
load_shaders();
static const GLfloat exposureLUT[20] = { 11.0f, 6.0f, 3.2f, 2.8f, 2.2f, 1.90f, 1.80f, 1.80f, 1.70f, 1.70f, 1.60f, 1.60f, 1.50f, 1.50f, 1.40f, 1.40f, 1.30f, 1.20f, 1.10f, 1.00f };
glGenTextures(1, &tex_lut);
glBindTexture(GL_TEXTURE_1D, tex_lut);
glTexStorage1D(GL_TEXTURE_1D, 1, GL_R32F, 20);
glTexSubImage1D(GL_TEXTURE_1D, 0, 0, 20, GL_RED, GL_FLOAT, exposureLUT);
glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
}
static bool
try_TexStorage(GLenum internalFormat)
{
bool pass = true;
GLuint tex[4];
GLenum expected_error;
GLenum expected_3D_error;
GLenum expected_cube_error;
/* The GL_ARB_texture_storage spec says:
*
* "- If <internalformat> is one of the internal formats listed in
* table 3.11, an INVALID_ENUM error is generated."
*
* Table 3.11 lists the unsized formats, including GL_DEPTH_STENCIL.
*/
if (internalFormat == GL_DEPTH_STENCIL) {
expected_error = has_depth_texture
? GL_INVALID_ENUM : GL_INVALID_VALUE;
expected_3D_error = has_depth_texture
? GL_INVALID_ENUM : GL_INVALID_VALUE;
expected_cube_error = has_depth_texture_cube_map
? GL_INVALID_ENUM : GL_INVALID_VALUE;
} else {
expected_error = has_depth_texture
? GL_NO_ERROR : GL_INVALID_VALUE;
expected_3D_error = has_depth_texture
? GL_INVALID_OPERATION : GL_INVALID_VALUE;
expected_cube_error = has_depth_texture_cube_map
? GL_NO_ERROR : expected_3D_error;
}
printf("Testing glTexStorage with %s...\n",
piglit_get_gl_enum_name(internalFormat));
glGenTextures(ARRAY_SIZE(tex), tex);
#if defined PIGLIT_USE_OPENGL
glBindTexture(GL_TEXTURE_1D, tex[0]);
glTexStorage1D(GL_TEXTURE_1D, 1, internalFormat, 16);
pass = piglit_check_gl_error(expected_error) && pass;
#endif
glBindTexture(GL_TEXTURE_2D, tex[1]);
glTexStorage2D(GL_TEXTURE_2D, 1, internalFormat, 16, 16);
pass = piglit_check_gl_error(expected_error) && pass;
#if !defined PIGLIT_USE_OPENGL_ES1
if (has_texture_3d) {
glBindTexture(GL_TEXTURE_3D, tex[2]);
glTexStorage3D(GL_TEXTURE_3D, 1, internalFormat, 8, 8, 8);
pass = piglit_check_gl_error(expected_3D_error) && pass;
}
#else
/* Silence "variable ‘expected_3D_error’ set but not used" warnings.
*/
(void) expected_3D_error;
#endif
if (has_texture_cube_map) {
glBindTexture(GL_TEXTURE_CUBE_MAP, tex[3]);
glTexStorage2D(GL_TEXTURE_CUBE_MAP, 1, internalFormat, 16, 16);
pass = piglit_check_gl_error(expected_cube_error) && pass;
}
#if defined PIGLIT_USE_OPENGL
glBindTexture(GL_TEXTURE_1D, 0);
#endif
glBindTexture(GL_TEXTURE_2D, 0);
if (has_texture_3d)
glBindTexture(GL_TEXTURE_3D, 0);
if (has_texture_cube_map)
glBindTexture(GL_TEXTURE_CUBE_MAP, 0);
glDeleteTextures(ARRAY_SIZE(tex), tex);
printf("Done.\n\n");
return pass;
}
JNIEXPORT void JNICALL Java_org_lwjgl_opengl_GL42_glTexStorage1D(JNIEnv *__env, jclass clazz, jint target, jint levels, jint internalformat, jint width) {
glTexStorage1DPROC glTexStorage1D = (glTexStorage1DPROC)tlsGetFunction(859);
UNUSED_PARAM(clazz)
glTexStorage1D(target, levels, internalformat, width);
}
GLuint vglLoadTexture(const char* filename,
GLuint texture,
vglImageData* image)
{
vglImageData local_image;
int level;
if (image == 0)
image = &local_image;
vglLoadImage(filename, image);
if (texture == 0)
{
glGenTextures(1, &texture);
}
glBindTexture(image->target, texture);
GLubyte * ptr = (GLubyte *)image->mip[0].data;
switch (image->target)
{
case GL_TEXTURE_1D:
glTexStorage1D(image->target,
image->mipLevels,
image->internalFormat,
image->mip[0].width);
for (level = 0; level < image->mipLevels; ++level)
{
glTexSubImage1D(GL_TEXTURE_1D,
level,
0,
image->mip[level].width,
image->format, image->type,
image->mip[level].data);
}
break;
case GL_TEXTURE_1D_ARRAY:
glTexStorage2D(image->target,
image->mipLevels,
image->internalFormat,
image->mip[0].width,
image->slices);
for (level = 0; level < image->mipLevels; ++level)
{
glTexSubImage2D(GL_TEXTURE_1D,
level,
0, 0,
image->mip[level].width, image->slices,
image->format, image->type,
image->mip[level].data);
}
break;
case GL_TEXTURE_2D:
glTexStorage2D(image->target,
image->mipLevels,
image->internalFormat,
image->mip[0].width,
image->mip[0].height);
for (level = 0; level < image->mipLevels; ++level)
{
glTexSubImage2D(GL_TEXTURE_2D,
level,
0, 0,
image->mip[level].width, image->mip[level].height,
image->format, image->type,
image->mip[level].data);
}
break;
case GL_TEXTURE_CUBE_MAP:
for (level = 0; level < image->mipLevels; ++level)
{
ptr = (GLubyte *)image->mip[level].data;
for (int face = 0; face < 6; face++)
{
glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + face,
level,
image->internalFormat,
image->mip[level].width, image->mip[level].height,
0,
image->format, image->type,
ptr + image->sliceStride * face);
}
}
break;
case GL_TEXTURE_2D_ARRAY:
glTexStorage3D(image->target,
image->mipLevels,
image->internalFormat,
image->mip[0].width,
image->mip[0].height,
image->slices);
for (level = 0; level < image->mipLevels; ++level)
{
glTexSubImage3D(GL_TEXTURE_2D_ARRAY,
level,
0, 0, 0,
image->mip[level].width, image->mip[level].height, image->slices,
image->format, image->type,
image->mip[level].data);
}
break;
case GL_TEXTURE_CUBE_MAP_ARRAY:
glTexStorage3D(image->target,
image->mipLevels,
image->internalFormat,
image->mip[0].width,
image->mip[0].height,
image->slices);
break;
case GL_TEXTURE_3D:
glTexStorage3D(image->target,
image->mipLevels,
image->internalFormat,
image->mip[0].width,
image->mip[0].height,
image->mip[0].depth);
for (level = 0; level < image->mipLevels; ++level)
{
glTexSubImage3D(GL_TEXTURE_3D,
level,
0, 0, 0,
image->mip[level].width, image->mip[level].height, image->mip[level].depth,
image->format, image->type,
image->mip[level].data);
}
break;
default:
break;
}
glTexParameteriv(image->target, GL_TEXTURE_SWIZZLE_RGBA, reinterpret_cast<const GLint *>(image->swizzle));
if (image == &local_image)
{
vglUnloadImage(image);
}
return texture;
}
static bool
test_format_lifetime(const struct format_desc desc0,
const struct format_desc desc1)
{
GLuint tex, viewTex[3];
GLint width = 32, w, levels = 6;
GLint l;
int bytes;
unsigned char *buffer0, *buffer1;
bool pass = true;
glGenTextures(1, &tex);
glBindTexture(GL_TEXTURE_1D, tex);
glTexStorage1D(GL_TEXTURE_1D, levels, desc0.storagefmt, width);
glGenTextures(3, viewTex);
glTextureView(viewTex[0], GL_TEXTURE_1D, tex, desc0.internalfmt, 0,
levels, 0, 1);
glTextureView(viewTex[1], GL_TEXTURE_1D, viewTex[0],
desc1.internalfmt, 0, levels, 0, 1);
pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
/* load each mipmap with a different color texture */
w = width;
bytes = (desc0.red + desc0.green + desc0.blue + desc0.alpha) / 8;
for (l = 0; l < levels; l++) {
GLubyte *buf = create_solid_image(width, 1, 1, bytes, l);
if (buf != NULL) {
glTexSubImage1D(GL_TEXTURE_1D, l, 0, w, desc0.imagefmt,
desc0.imagetype, buf);
free(buf);
} else {
piglit_report_result(PIGLIT_FAIL);
assert(!"create_solid_image() failed\n");
}
if (w > 1)
w /= 2;
}
#if 0 /* debug */
printf("fmt0=%s, fmt1=%s, strgfmt0=%s, gettype0=%s\n",
piglit_get_gl_enum_name(desc0.internalfmt),
piglit_get_gl_enum_name(desc1.internalfmt),
piglit_get_gl_enum_name(desc0.storagefmt),
piglit_get_gl_enum_name(desc0.gettype));
printf("bytes=%d, width=%d, viewTex[0]=%d, [1]=%d, [2]=%d\n",bytes,
width, viewTex[0], viewTex[1], viewTex[2]);
#endif
glDeleteTextures(1, &tex);
pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
/* compare view0 all level texels bytes to view1 texels bytes */
buffer0 = malloc(width * bytes);
buffer1 = malloc(width * bytes);
w = width;
for (l = 0; l < levels; l++) {
glBindTexture(GL_TEXTURE_1D, viewTex[0]);
glGetTexImage(GL_TEXTURE_1D, l, desc0.getfmt, desc0.gettype,
buffer0);
glBindTexture(GL_TEXTURE_1D, viewTex[1]);
glGetTexImage(GL_TEXTURE_1D, l, desc1.getfmt, desc1.gettype,
buffer1);
if (buffers_equal(buffer0, buffer1, w)) {
pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
printf("level %d texel mismatch view0 and view1, width=%d\n",
l, w);
printf("internal format0 %s, internal format1 %s\n",
piglit_get_gl_enum_name(desc0.internalfmt),
piglit_get_gl_enum_name(desc1.internalfmt));
pass = false;
}
if (w > 1)
w /= 2;
}
/* compare view1 base level texels to view2 after view0 and view1
deleted */
glBindTexture(GL_TEXTURE_1D, viewTex[1]);
glGetTexImage(GL_TEXTURE_1D, 0, desc1.getfmt, desc1.gettype, buffer1);
glTextureView(viewTex[2], GL_TEXTURE_1D, viewTex[0],
desc0.internalfmt, 0, 1, 0, 1);
pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
glDeleteTextures(2, viewTex);
glBindTexture(GL_TEXTURE_1D, viewTex[2]);
glGetTexImage(GL_TEXTURE_1D, 0, desc0.getfmt, desc0.gettype, buffer0);
if (buffers_equal(buffer0, buffer1, width)) {
pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
printf("Mismatched texels view1 and view2\n");
printf("internal format0 %s, internal format1 %s\n",
piglit_get_gl_enum_name(desc0.internalfmt),
piglit_get_gl_enum_name(desc1.internalfmt));
pass = false;
}
free(buffer0);
free(buffer1);
glDeleteTextures(1, &viewTex[2]);
return pass;
}
/**
* Do error-check tests for texture targets
*/
static bool
test_target_errors(GLenum target)
{
GLint width = 64, height = 14, depth = 8;
const GLsizei levels = 1;
GLuint tex;
enum piglit_result pass = true;
GLenum legalTargets[4];
unsigned int numTargets, numIllegalTargets;
GLenum illegalTargets[] = {
GL_TEXTURE_1D,
GL_TEXTURE_2D,
GL_TEXTURE_3D,
GL_TEXTURE_CUBE_MAP,
GL_TEXTURE_RECTANGLE,
GL_TEXTURE_1D_ARRAY,
GL_TEXTURE_2D_ARRAY,
GL_TEXTURE_CUBE_MAP_ARRAY,
GL_TEXTURE_2D_MULTISAMPLE,
GL_TEXTURE_2D_MULTISAMPLE_ARRAY
};
GLsizei texSamples;
if (piglit_is_extension_supported("GL_ARB_texture_storage_multisample")) {
numIllegalTargets = ARRAY_SIZE(illegalTargets);
glGetIntegerv(GL_MAX_COLOR_TEXTURE_SAMPLES, &texSamples);
} else {
numIllegalTargets = ARRAY_SIZE(illegalTargets) -2;
texSamples = 1;
}
glGenTextures(1, &tex); /* orig tex */
glBindTexture(target, tex);
switch (target) {
case GL_TEXTURE_1D:
glTexStorage1D(target, levels, GL_RGBA8, width);
numTargets = update_valid_arrays(legalTargets, illegalTargets,
numIllegalTargets,
GL_TEXTURE_1D, GL_TEXTURE_1D_ARRAY, 0);
break;
case GL_TEXTURE_1D_ARRAY:
glTexStorage2D(target, levels, GL_RGBA8, width, height);
numTargets = update_valid_arrays(legalTargets, illegalTargets,
numIllegalTargets,
GL_TEXTURE_1D, GL_TEXTURE_1D_ARRAY, 0);
break;
case GL_TEXTURE_2D:
glTexStorage2D(target, levels, GL_RGBA8, width, height);
numTargets = update_valid_arrays(legalTargets, illegalTargets,
numIllegalTargets,
GL_TEXTURE_2D, GL_TEXTURE_2D_ARRAY, 0);
break;
case GL_TEXTURE_RECTANGLE:
glTexStorage2D(target, levels, GL_RGBA8, width, height);
numTargets = update_valid_arrays(legalTargets, illegalTargets,
numIllegalTargets,
GL_TEXTURE_RECTANGLE, 0);
break;
case GL_TEXTURE_CUBE_MAP:
width = height;
glTexStorage2D(target, levels, GL_RGBA8, width, height);
numTargets = update_valid_arrays(legalTargets, illegalTargets,
numIllegalTargets,
GL_TEXTURE_CUBE_MAP, GL_TEXTURE_2D,
GL_TEXTURE_2D_ARRAY,
GL_TEXTURE_CUBE_MAP_ARRAY, 0);
break;
case GL_TEXTURE_3D:
glTexStorage3D(target, levels, GL_RGBA8, width, height, depth);
numTargets = update_valid_arrays(legalTargets, illegalTargets,
numIllegalTargets,
GL_TEXTURE_3D, 0);
break;
case GL_TEXTURE_CUBE_MAP_ARRAY:
case GL_TEXTURE_2D_ARRAY:
height = width;
glTexStorage3D(target, levels, GL_RGBA8, width, height, depth*6);
numTargets = update_valid_arrays(legalTargets, illegalTargets,
numIllegalTargets,
GL_TEXTURE_CUBE_MAP, GL_TEXTURE_2D,
GL_TEXTURE_2D_ARRAY,
GL_TEXTURE_CUBE_MAP_ARRAY, 0);
break;
case GL_TEXTURE_2D_MULTISAMPLE:
glTexStorage2DMultisample(target, texSamples, GL_RGBA8,
width, height, GL_TRUE);
numTargets = update_valid_arrays(legalTargets, illegalTargets,
numIllegalTargets,
GL_TEXTURE_2D_MULTISAMPLE,
GL_TEXTURE_2D_MULTISAMPLE_ARRAY, 0);
break;
case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
glTexStorage3DMultisample(target, texSamples, GL_RGBA8,
width, height, depth, GL_TRUE);
numTargets = update_valid_arrays(legalTargets, illegalTargets,
numIllegalTargets,
GL_TEXTURE_2D_MULTISAMPLE,
GL_TEXTURE_2D_MULTISAMPLE_ARRAY, 0);
break;
default:
assert(0);
numTargets = 0;
break;
}
if (!piglit_check_gl_error(GL_NO_ERROR)) {
printf("%s Found gl errors prior to testing glTextureView\n",
TestName);
pass = false;
goto err_out;
}
/* ensure TextureView of legal targets works without gl errors */
pass = pass && check_target_array(GL_NO_ERROR, numTargets, legalTargets,
GL_RG16, tex, levels);
/* ensure TextureView of illegal targets returns an error */
pass = pass && check_target_array(GL_INVALID_OPERATION,
numIllegalTargets,
illegalTargets,
GL_RG16, tex, levels);
err_out:
glDeleteTextures(1, &tex);
return pass;
}
// Creation / loading methods
void GL3PlusTexture::createInternalResourcesImpl(void)
{
// set HardwareBuffer::Usage for TU_RENDERTARGET if nothing else specified
if((mUsage & TU_RENDERTARGET) && (mUsage & ~TU_RENDERTARGET) == 0)
mUsage |= HardwareBuffer::HBU_DYNAMIC;
// Adjust format if required.
mFormat = TextureManager::getSingleton().getNativeFormat(mTextureType, mFormat, mUsage);
// Check requested number of mipmaps.
uint32 maxMips = getMaxMipmaps();
if (PixelUtil::isCompressed(mFormat) && (mNumMipmaps == 0))
mNumRequestedMipmaps = 0;
mNumMipmaps = mNumRequestedMipmaps;
if (mNumMipmaps > maxMips)
mNumMipmaps = maxMips;
// Create a texture object and identify its GL type.
OGRE_CHECK_GL_ERROR(glGenTextures(1, &mTextureID));
GLenum texTarget = getGL3PlusTextureTarget();
// Calculate size for all mip levels of the texture.
uint32 width, height, depth;
if ((mWidth * PixelUtil::getNumElemBytes(mFormat)) & 3) {
// Standard alignment of 4 is not right for some formats.
OGRE_CHECK_GL_ERROR(glPixelStorei(GL_UNPACK_ALIGNMENT, 1));
}
// Bind texture object to its type, making it the active texture object
// for that type.
mRenderSystem->_getStateCacheManager()->bindGLTexture( texTarget, mTextureID );
mRenderSystem->_getStateCacheManager()->setTexParameteri(texTarget, GL_TEXTURE_BASE_LEVEL, 0);
mRenderSystem->_getStateCacheManager()->setTexParameteri(texTarget, GL_TEXTURE_MAX_LEVEL, mNumMipmaps);
// Set some misc default parameters, these can of course be changed later.
mRenderSystem->_getStateCacheManager()->setTexParameteri(texTarget,
GL_TEXTURE_MIN_FILTER, GL_NEAREST);
mRenderSystem->_getStateCacheManager()->setTexParameteri(texTarget,
GL_TEXTURE_MAG_FILTER, GL_NEAREST);
mRenderSystem->_getStateCacheManager()->setTexParameteri(texTarget,
GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
mRenderSystem->_getStateCacheManager()->setTexParameteri(texTarget,
GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
// Set up texture swizzling.
mRenderSystem->_getStateCacheManager()->setTexParameteri(texTarget, GL_TEXTURE_SWIZZLE_R, GL_RED);
mRenderSystem->_getStateCacheManager()->setTexParameteri(texTarget, GL_TEXTURE_SWIZZLE_G, GL_GREEN);
mRenderSystem->_getStateCacheManager()->setTexParameteri(texTarget, GL_TEXTURE_SWIZZLE_B, GL_BLUE);
mRenderSystem->_getStateCacheManager()->setTexParameteri(texTarget, GL_TEXTURE_SWIZZLE_A, GL_ALPHA);
if (PixelUtil::isLuminance(mFormat) && (mRenderSystem->hasMinGLVersion(3, 3) || mRenderSystem->checkExtension("GL_ARB_texture_swizzle")))
{
if (PixelUtil::getComponentCount(mFormat) == 2)
{
mRenderSystem->_getStateCacheManager()->setTexParameteri(texTarget, GL_TEXTURE_SWIZZLE_R, GL_RED);
mRenderSystem->_getStateCacheManager()->setTexParameteri(texTarget, GL_TEXTURE_SWIZZLE_G, GL_RED);
mRenderSystem->_getStateCacheManager()->setTexParameteri(texTarget, GL_TEXTURE_SWIZZLE_B, GL_RED);
mRenderSystem->_getStateCacheManager()->setTexParameteri(texTarget, GL_TEXTURE_SWIZZLE_A, GL_GREEN);
}
else
{
mRenderSystem->_getStateCacheManager()->setTexParameteri(texTarget, GL_TEXTURE_SWIZZLE_R, GL_RED);
mRenderSystem->_getStateCacheManager()->setTexParameteri(texTarget, GL_TEXTURE_SWIZZLE_G, GL_RED);
mRenderSystem->_getStateCacheManager()->setTexParameteri(texTarget, GL_TEXTURE_SWIZZLE_B, GL_RED);
mRenderSystem->_getStateCacheManager()->setTexParameteri(texTarget, GL_TEXTURE_SWIZZLE_A, GL_ONE);
}
}
GLenum format = GL3PlusPixelUtil::getGLInternalFormat(mFormat, mHwGamma);
GLenum datatype = GL3PlusPixelUtil::getGLOriginDataType(mFormat);
width = mWidth;
height = mHeight;
depth = mDepth;
// Allocate texture storage so that glTexSubImageXD can be
// used to upload the texture.
if (PixelUtil::isCompressed(mFormat))
{
// Compressed formats
GLsizei size;
for (uint32 mip = 0; mip <= mNumMipmaps; mip++)
{
size = static_cast<GLsizei>(PixelUtil::getMemorySize(width, height, depth, mFormat));
// std::stringstream str;
// str << "GL3PlusTexture::create - " << StringConverter::toString(mTextureID)
// << " bytes: " << StringConverter::toString(PixelUtil::getMemorySize(mWidth, mHeight, mDepth, mFormat))
// << " Mip: " + StringConverter::toString(mip)
// << " Width: " << StringConverter::toString(width)
// << " Height: " << StringConverter::toString(height)
// << " Format " << PixelUtil::getFormatName(mFormat)
// << " Internal Format: 0x" << std::hex << format
// << " Origin Format: 0x" << std::hex << GL3PlusPixelUtil::getGLOriginFormat(mFormat)
// << " Data type: 0x" << std::hex << datatype;
// LogManager::getSingleton().logMessage(LML_NORMAL, str.str());
switch(mTextureType)
{
case TEX_TYPE_1D:
OGRE_CHECK_GL_ERROR(glCompressedTexImage1D(GL_TEXTURE_1D, mip, format,
width, 0,
size, NULL));
break;
case TEX_TYPE_2D:
OGRE_CHECK_GL_ERROR(glCompressedTexImage2D(GL_TEXTURE_2D,
mip,
format,
width, height,
0,
size,
NULL));
break;
case TEX_TYPE_2D_RECT:
OGRE_CHECK_GL_ERROR(glCompressedTexImage2D(GL_TEXTURE_RECTANGLE,
mip,
format,
width, height,
0,
size,
NULL));
break;
case TEX_TYPE_2D_ARRAY:
case TEX_TYPE_3D:
OGRE_CHECK_GL_ERROR(glCompressedTexImage3D(texTarget, mip, format,
width, height, depth, 0,
size, NULL));
break;
case TEX_TYPE_CUBE_MAP:
for(int face = 0; face < 6; face++) {
OGRE_CHECK_GL_ERROR(glCompressedTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + face, mip, format,
width, height, 0,
size, NULL));
}
break;
default:
break;
};
if (width > 1)
{
width = width / 2;
}
if (height > 1)
{
height = height / 2;
}
if (depth > 1 && mTextureType != TEX_TYPE_2D_ARRAY)
{
depth = depth / 2;
}
}
}
else
{
if (mRenderSystem->hasMinGLVersion(4, 2) || mRenderSystem->checkExtension("GL_ARB_texture_storage"))
{
switch(mTextureType)
{
case TEX_TYPE_1D:
OGRE_CHECK_GL_ERROR(glTexStorage1D(GL_TEXTURE_1D, GLsizei(mNumMipmaps+1), format, GLsizei(width)));
break;
case TEX_TYPE_2D:
case TEX_TYPE_2D_RECT:
OGRE_CHECK_GL_ERROR(glTexStorage2D(GL_TEXTURE_2D, GLsizei(mNumMipmaps+1), format, GLsizei(width), GLsizei(height)));
break;
case TEX_TYPE_CUBE_MAP:
OGRE_CHECK_GL_ERROR(glTexStorage2D(GL_TEXTURE_CUBE_MAP, GLsizei(mNumMipmaps+1), format, GLsizei(width), GLsizei(height)));
break;
case TEX_TYPE_2D_ARRAY:
OGRE_CHECK_GL_ERROR(glTexStorage3D(GL_TEXTURE_2D_ARRAY, GLsizei(mNumMipmaps+1), format, GLsizei(width), GLsizei(height), GLsizei(depth)));
break;
case TEX_TYPE_3D:
OGRE_CHECK_GL_ERROR(glTexStorage3D(GL_TEXTURE_3D, GLsizei(mNumMipmaps+1), format, GLsizei(width), GLsizei(height), GLsizei(depth)));
break;
}
}
else
{
GLenum originFormat = GL3PlusPixelUtil::getGLOriginFormat(mFormat);
// Run through this process to pregenerate mipmap pyramid
for(uint32 mip = 0; mip <= mNumMipmaps; mip++)
{
// std::stringstream str;
// str << "GL3PlusTexture::create - " << StringConverter::toString(mTextureID)
// << " bytes: " << StringConverter::toString(PixelUtil::getMemorySize(width, height, depth, mFormat))
// << " Mip: " + StringConverter::toString(mip)
// << " Width: " << StringConverter::toString(width)
// << " Height: " << StringConverter::toString(height)
// << " Format " << PixelUtil::getFormatName(mFormat)
// << " Internal Format: 0x" << std::hex << format
// << " Origin Format: 0x" << std::hex << GL3PlusPixelUtil::getGLOriginFormat(mFormat)
// << " Data type: 0x" << std::hex << datatype;
// LogManager::getSingleton().logMessage(LML_NORMAL, str.str());
// Normal formats
switch(mTextureType)
{
case TEX_TYPE_1D:
OGRE_CHECK_GL_ERROR(glTexImage1D(GL_TEXTURE_1D, mip, format,
width, 0,
originFormat, datatype, NULL));
break;
case TEX_TYPE_2D:
OGRE_CHECK_GL_ERROR(glTexImage2D(GL_TEXTURE_2D,
mip,
format,
width, height,
0,
originFormat,
datatype, NULL));
break;
case TEX_TYPE_2D_RECT:
OGRE_CHECK_GL_ERROR(glTexImage2D(GL_TEXTURE_RECTANGLE,
mip,
format,
width, height,
0,
originFormat,
datatype, NULL));
break;
case TEX_TYPE_3D:
case TEX_TYPE_2D_ARRAY:
OGRE_CHECK_GL_ERROR(glTexImage3D(texTarget, mip, format,
width, height, depth, 0,
originFormat, datatype, NULL));
break;
case TEX_TYPE_CUBE_MAP:
for(int face = 0; face < 6; face++) {
OGRE_CHECK_GL_ERROR(glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + face, mip, format,
width, height, 0,
originFormat, datatype, NULL));
}
break;
default:
break;
};
if (width > 1)
{
width = width / 2;
}
if (height > 1)
{
height = height / 2;
}
if (depth > 1 && mTextureType != TEX_TYPE_2D_ARRAY)
{
depth = depth / 2;
}
}
}
}
// Reset unpack alignment to defaults
OGRE_CHECK_GL_ERROR(glPixelStorei(GL_UNPACK_ALIGNMENT, 4));
_createSurfaceList();
// Generate mipmaps after all texture levels have been loaded
// This is required for compressed formats such as DXT
if (PixelUtil::isCompressed(mFormat) && mUsage & TU_AUTOMIPMAP)
{
OGRE_CHECK_GL_ERROR(glGenerateMipmap(getGL3PlusTextureTarget()));
}
// Get final internal format.
mFormat = getBuffer(0,0)->getFormat();
}
////////////////////////////////////////////////////////////////////////////////
// on init cb
void on_init()
{
// variables
GLuint texture=0;
GLint iterationCnt=sizeof(internalFormats)/(sizeof(GLenum));
#ifndef _WIN32
// Configure debug output
glEnable(GL_DEBUG_OUTPUT_SYNCHRONOUS_ARB);
glDebugMessageCallbackARB(
reinterpret_cast<GLDEBUGPROCARB>(&gl_debug_message_callback),
reinterpret_cast<GLvoid*>(&i) );
#endif
for(i=0; i<iterationCnt; ++i)
{
glGenTextures(1, &texture);
glBindTexture(GL_TEXTURE_1D, texture);
glTexStorage1D(GL_TEXTURE_1D,
1,
internalFormats[i],
1);
glBindTexture(GL_TEXTURE_1D, 0);
glDeleteTextures(1, &texture);
#ifdef _WIN32
GLenum error = glGetError();
if(error!=GL_NO_ERROR)
std::cerr << "glTexStorage1D gave "
<< gl_error_to_string(error)
<< " (internalformat= "
<< internalFormatsStr[i]
<< ")\n";
#endif
}
std::cerr << '\n';
// 2D tests
for(i=0; i<iterationCnt; ++i)
{
glGenTextures(1, &texture);
glBindTexture(GL_TEXTURE_2D, texture);
glTexStorage2D(GL_TEXTURE_2D,
1,
internalFormats[i],
1,
1);
glDeleteTextures(1, &texture);
#ifdef _WIN32
GLenum error = glGetError();
if(error!=GL_NO_ERROR)
std::cerr << "glTexStorage2D gave "
<< gl_error_to_string(error)
<< " (internalformat= "
<< internalFormatsStr[i]
<< ")\n";
#endif
}
std::cerr << '\n';
// 3D tests
for(i=0; i<iterationCnt; ++i)
{
glGenTextures(1, &texture);
glBindTexture(GL_TEXTURE_3D, texture);
glTexStorage3D(GL_TEXTURE_3D,
1,
internalFormats[i],
1,
1,
1);
glDeleteTextures(1, &texture);
#ifdef _WIN32
GLenum error = glGetError();
if(error!=GL_NO_ERROR)
std::cerr << "glTexStorage3D gave "
<< gl_error_to_string(error)
<< " (internalformat= "
<< internalFormatsStr[i]
<< ")\n";
#endif
}
}
void OGLTexture1D::CreateHWResource(ArrayRef<ElementInitData> init_data, float4 const * clear_value_hint)
{
KFL_UNUSED(clear_value_hint);
GLint glinternalFormat;
GLenum glformat;
GLenum gltype;
OGLMapping::MappingFormat(glinternalFormat, glformat, gltype, format_);
if (sample_count_ <= 1)
{
uint32_t const pbo_size = mipmap_start_offset_.back() * array_size_;
if (glloader_GL_VERSION_4_5() || glloader_GL_ARB_direct_state_access())
{
glTextureParameteri(texture_, GL_TEXTURE_MAX_LEVEL, num_mip_maps_ - 1);
glNamedBufferStorage(pbo_, pbo_size, nullptr, GL_MAP_READ_BIT | GL_MAP_WRITE_BIT | GL_DYNAMIC_STORAGE_BIT);
uint32_t const w0 = this->Width(0);
if (array_size_ > 1)
{
glTextureStorage2D(texture_, num_mip_maps_, glinternalFormat, w0, array_size_);
}
else
{
glTextureStorage1D(texture_, num_mip_maps_, glinternalFormat, w0);
}
if (!init_data.empty())
{
for (uint32_t array_index = 0; array_index < array_size_; ++ array_index)
{
for (uint32_t level = 0; level < num_mip_maps_; ++ level)
{
uint32_t const w = this->Width(level);
GLvoid const * data = init_data[array_index * num_mip_maps_ + level].data;
if (IsCompressedFormat(format_))
{
uint32_t const block_size = NumFormatBytes(format_) * 4;
GLsizei const image_size = ((w + 3) / 4) * block_size;
if (array_size_ > 1)
{
glCompressedTextureSubImage2D(texture_, level, 0, array_index,
w, 1, glformat, image_size, data);
}
else
{
glCompressedTextureSubImage1D(texture_, level, 0,
w, glformat, image_size, data);
}
}
else
{
if (array_size_ > 1)
{
glTextureSubImage2D(texture_, level, 0, array_index, w, 1,
glformat, gltype, data);
}
else
{
glTextureSubImage1D(texture_, level, 0, w, glformat, gltype, data);
}
}
}
}
}
}
else
{
auto& re = *checked_cast<OGLRenderEngine*>(&Context::Instance().RenderFactoryInstance().RenderEngineInstance());
re.BindTexture(0, target_type_, texture_);
glTexParameteri(target_type_, GL_TEXTURE_MAX_LEVEL, num_mip_maps_ - 1);
re.BindBuffer(GL_PIXEL_UNPACK_BUFFER, pbo_);
if (glloader_GL_VERSION_4_4() || glloader_GL_ARB_buffer_storage())
{
glBufferStorage(GL_PIXEL_UNPACK_BUFFER, pbo_size, nullptr, GL_DYNAMIC_STORAGE_BIT);
}
else
{
glBufferData(GL_PIXEL_UNPACK_BUFFER, pbo_size, nullptr, GL_STREAM_COPY);
}
re.BindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
if (glloader_GL_VERSION_4_2() || glloader_GL_ARB_texture_storage())
{
uint32_t const w0 = this->Width(0);
if (array_size_ > 1)
{
glTexStorage2D(target_type_, num_mip_maps_, glinternalFormat, w0, array_size_);
}
else
{
glTexStorage1D(target_type_, num_mip_maps_, glinternalFormat, w0);
}
if (!init_data.empty())
{
for (uint32_t array_index = 0; array_index < array_size_; ++ array_index)
{
for (uint32_t level = 0; level < num_mip_maps_; ++ level)
{
uint32_t const w = this->Width(level);
GLvoid const * data = init_data[array_index * num_mip_maps_ + level].data;
if (IsCompressedFormat(format_))
{
uint32_t const block_size = NumFormatBytes(format_) * 4;
GLsizei const image_size = ((w + 3) / 4) * block_size;
if (array_size_ > 1)
{
glCompressedTexSubImage2D(target_type_, level, 0, array_index,
w, 1, glformat, image_size, data);
}
else
{
glCompressedTexSubImage1D(target_type_, level, 0,
w, glformat, image_size, data);
}
}
else
{
if (array_size_ > 1)
{
glTexSubImage2D(target_type_, level, 0, array_index, w, 1,
glformat, gltype, data);
}
else
{
glTexSubImage1D(target_type_, level, 0, w, glformat, gltype, data);
}
}
}
}
}
}
else
{
for (uint32_t array_index = 0; array_index < array_size_; ++ array_index)
{
for (uint32_t level = 0; level < num_mip_maps_; ++ level)
{
uint32_t const w = this->Width(level);
if (IsCompressedFormat(format_))
{
uint32_t const block_size = NumFormatBytes(format_) * 4;
GLsizei const image_size = ((w + 3) / 4) * block_size;
if (array_size_ > 1)
{
if (0 == array_index)
{
glCompressedTexImage2D(target_type_, level, glinternalFormat,
w, array_size_, 0, image_size * array_size_, nullptr);
}
if (!init_data.empty())
{
glCompressedTexSubImage2D(target_type_, level, 0, array_index, w, 1,
glformat, image_size, init_data[array_index * num_mip_maps_ + level].data);
}
}
else
{
glCompressedTexImage1D(target_type_, level, glinternalFormat,
w, 0, image_size,
init_data.empty() ? nullptr : init_data[array_index * num_mip_maps_ + level].data);
}
}
else
{
if (array_size_ > 1)
{
if (0 == array_index)
{
glTexImage2D(target_type_, level, glinternalFormat, w, array_size_, 0, glformat, gltype, nullptr);
}
if (!init_data.empty())
{
glTexSubImage2D(target_type_, level, 0, array_index, w, 1,
glformat, gltype, init_data[array_index * num_mip_maps_ + level].data);
}
}
else
{
glTexImage1D(target_type_, level, glinternalFormat, w, 0, glformat, gltype,
init_data.empty() ? nullptr : init_data[array_index * num_mip_maps_ + level].data);
}
}
}
}
}
}
}
else
{
glBindRenderbuffer(GL_RENDERBUFFER, texture_);
glRenderbufferStorageMultisample(GL_RENDERBUFFER, sample_count_, glinternalFormat, width_, 1);
}
hw_res_ready_ = true;
}
unsigned int loadKTX(const char * filename, unsigned int tex)
{
FILE * fp;
GLuint temp = 0;
GLuint retval = 0;
header h;
size_t data_start, data_end;
unsigned char * data;
GLenum target = GL_NONE;
fp = fopen(filename, "rb");
if (!fp)
return 0;
if (fread(&h, sizeof(h), 1, fp) != 1)
goto fail_read;
if (memcmp(h.identifier, identifier, sizeof(identifier)) != 0)
goto fail_header;
if (h.endianness == 0x04030201)
{
// No swap needed
}
else if (h.endianness == 0x01020304)
{
// Swap needed
h.endianness = swap32(h.endianness);
h.gltype = swap32(h.gltype);
h.gltypesize = swap32(h.gltypesize);
h.glformat = swap32(h.glformat);
h.glinternalformat = swap32(h.glinternalformat);
h.glbaseinternalformat = swap32(h.glbaseinternalformat);
h.pixelwidth = swap32(h.pixelwidth);
h.pixelheight = swap32(h.pixelheight);
h.pixeldepth = swap32(h.pixeldepth);
h.arrayelements = swap32(h.arrayelements);
h.faces = swap32(h.faces);
h.miplevels = swap32(h.miplevels);
h.keypairbytes = swap32(h.keypairbytes);
}
else
{
goto fail_header;
}
// Guess target (texture type)
if (h.pixelheight == 0)
{
if (h.arrayelements == 0)
{
target = GL_TEXTURE_1D;
}
else
{
target = GL_TEXTURE_1D_ARRAY;
}
}
else if (h.pixeldepth == 0)
{
if (h.arrayelements == 0)
{
if (h.faces == 0)
{
target = GL_TEXTURE_2D;
}
else
{
target = GL_TEXTURE_CUBE_MAP;
}
}
else
{
if (h.faces == 0)
{
target = GL_TEXTURE_2D_ARRAY;
}
else
{
target = GL_TEXTURE_CUBE_MAP_ARRAY;
}
}
}
else
{
target = GL_TEXTURE_3D;
}
// Check for insanity...
if (target == GL_NONE || // Couldn't figure out target
(h.pixelwidth == 0) || // Texture has no width???
(h.pixelheight == 0 && h.pixeldepth != 0)) // Texture has depth but no height???
{
goto fail_header;
}
temp = tex;
if (tex == 0)
{
glGenTextures(1, &tex);
}
glBindTexture(target, tex);
data_start = ftell(fp) + h.keypairbytes;
fseek(fp, 0, SEEK_END);
data_end = ftell(fp);
fseek(fp, data_start, SEEK_SET);
data = new unsigned char [data_end - data_start];
memset(data, 0, data_end - data_start);
fread(data, 1, data_end - data_start, fp);
if (h.miplevels == 0)
{
h.miplevels = 1;
}
switch (target)
{
case GL_TEXTURE_1D:
glTexStorage1D(GL_TEXTURE_1D, h.miplevels, h.glinternalformat, h.pixelwidth);
glTexSubImage1D(GL_TEXTURE_1D, 0, 0, h.pixelwidth, h.glformat, h.glinternalformat, data);
break;
case GL_TEXTURE_2D:
glTexStorage2D(GL_TEXTURE_2D, h.miplevels, h.glinternalformat, h.pixelwidth, h.pixelheight);
{
unsigned char * ptr = data;
unsigned int height = h.pixelheight;
unsigned int width = h.pixelwidth;
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
for (unsigned int i = 0; i < h.miplevels; i++)
{
glTexSubImage2D(GL_TEXTURE_2D, i, 0, 0, width, height, h.glformat, h.gltype, ptr);
ptr += height * calculate_stride(h, width, 1);
height >>= 1;
width >>= 1;
if (!height)
height = 1;
if (!width)
width = 1;
}
}
break;
case GL_TEXTURE_3D:
glTexStorage3D(GL_TEXTURE_3D, h.miplevels, h.glinternalformat, h.pixelwidth, h.pixelheight, h.pixeldepth);
glTexSubImage3D(GL_TEXTURE_3D, 0, 0, 0, 0, h.pixelwidth, h.pixelheight, h.pixeldepth, h.glformat, h.gltype, data);
break;
case GL_TEXTURE_1D_ARRAY:
glTexStorage2D(GL_TEXTURE_1D_ARRAY, h.miplevels, h.glinternalformat, h.pixelwidth, h.arrayelements);
glTexSubImage2D(GL_TEXTURE_1D_ARRAY, 0, 0, 0, h.pixelwidth, h.arrayelements, h.glformat, h.gltype, data);
break;
case GL_TEXTURE_2D_ARRAY:
glTexStorage3D(GL_TEXTURE_2D_ARRAY, h.miplevels, h.glinternalformat, h.pixelwidth, h.pixelheight, h.arrayelements);
glTexSubImage3D(GL_TEXTURE_2D_ARRAY, 0, 0, 0, 0, h.pixelwidth, h.pixelheight, h.arrayelements, h.glformat, h.gltype, data);
break;
case GL_TEXTURE_CUBE_MAP:
glTexStorage2D(GL_TEXTURE_CUBE_MAP, h.miplevels, h.glinternalformat, h.pixelwidth, h.pixelheight);
// glTexSubImage3D(GL_TEXTURE_CUBE_MAP, 0, 0, 0, 0, h.pixelwidth, h.pixelheight, h.faces, h.glformat, h.gltype, data);
{
unsigned int face_size = calculate_face_size(h);
for (unsigned int i = 0; i < h.faces; i++)
{
glTexSubImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, 0, 0, h.pixelwidth, h.pixelheight, h.glformat, h.gltype, data + face_size * i);
}
}
break;
case GL_TEXTURE_CUBE_MAP_ARRAY:
glTexStorage3D(GL_TEXTURE_CUBE_MAP_ARRAY, h.miplevels, h.glinternalformat, h.pixelwidth, h.pixelheight, h.arrayelements);
glTexSubImage3D(GL_TEXTURE_CUBE_MAP_ARRAY, 0, 0, 0, 0, h.pixelwidth, h.pixelheight, h.faces * h.arrayelements, h.glformat, h.gltype, data);
break;
default: // Should never happen
goto fail_target;
}
if (h.miplevels == 1)
{
glGenerateMipmap(target);
}
retval = tex;
fail_target:
delete [] data;
fail_header:;
fail_read:;
fclose(fp);
return retval;
}
JNIEXPORT void JNICALL Java_org_lwjgl_opengl_GL42_nglTexStorage1D(JNIEnv *env, jclass clazz, jint target, jint levels, jint internalformat, jint width, jlong function_pointer) {
glTexStorage1DPROC glTexStorage1D = (glTexStorage1DPROC)((intptr_t)function_pointer);
glTexStorage1D(target, levels, internalformat, width);
}
DDSTexture::DDSTexture(string filename) {
filename = FOLDER + filename;
gli::texture texture = gli::load(filename);
if (texture.empty())
return;
gli::gl GL;
gli::gl::format const Format = GL.translate(texture.format());
this->target = GL.translate(texture.target());
glGenTextures(1, &glId);
glBindTexture(target, glId);
glTexParameteri(target, GL_TEXTURE_BASE_LEVEL, 0);
glTexParameteri(target, GL_TEXTURE_MAX_LEVEL, static_cast<GLint>(texture.levels() - 1));
glTexParameteri(target, GL_TEXTURE_SWIZZLE_R, Format.Swizzle[0]);
glTexParameteri(target, GL_TEXTURE_SWIZZLE_G, Format.Swizzle[1]);
glTexParameteri(target, GL_TEXTURE_SWIZZLE_B, Format.Swizzle[2]);
glTexParameteri(target, GL_TEXTURE_SWIZZLE_A, Format.Swizzle[3]);
glm::tvec3<GLsizei> const Dimensions(texture.dimensions());
GLsizei const FaceTotal = static_cast<GLsizei>(texture.layers() * texture.faces());
switch (texture.target())
{
case gli::TARGET_1D:
glTexStorage1D(target, static_cast<GLint>(texture.levels()), Format.Internal, Dimensions.x);
break;
case gli::TARGET_1D_ARRAY:
case gli::TARGET_2D:
case gli::TARGET_CUBE:
glTexStorage2D(
target, static_cast<GLint>(texture.levels()), Format.Internal,
Dimensions.x, texture.target() == gli::TARGET_2D ? Dimensions.y : FaceTotal);
break;
case gli::TARGET_2D_ARRAY:
case gli::TARGET_3D:
case gli::TARGET_CUBE_ARRAY:
glTexStorage3D(
target, static_cast<GLint>(texture.levels()), Format.Internal,
Dimensions.x, Dimensions.y, texture.target() == gli::TARGET_3D ? Dimensions.z : FaceTotal);
break;
default: assert(0); break;
}
for (std::size_t Layer = 0; Layer < texture.layers(); ++Layer) {
for (std::size_t Face = 0; Face < texture.faces(); ++Face) {
for (std::size_t Level = 0; Level < texture.levels(); ++Level)
{
GLsizei const LayerGL = static_cast<GLsizei>(Layer);
glm::tvec3<GLsizei> Dimensions(texture.dimensions(Level));
if (gli::is_target_cube(texture.target()))
target = static_cast<GLenum>(GL_TEXTURE_CUBE_MAP_POSITIVE_X + Face);
switch (texture.target())
{
case gli::TARGET_1D:
if (gli::is_compressed(texture.format()))
glCompressedTexSubImage1D(
target, static_cast<GLint>(Level), 0, Dimensions.x,
Format.Internal, static_cast<GLsizei>(texture.size(Level)),
texture.data(Layer, Face, Level));
else
glTexSubImage1D(
target, static_cast<GLint>(Level), 0, Dimensions.x, Format.External, Format.Type,
texture.data(Layer, Face, Level));
break;
case gli::TARGET_1D_ARRAY:
case gli::TARGET_2D:
case gli::TARGET_CUBE:
if (gli::is_compressed(texture.format()))
glCompressedTexSubImage2D(
target, static_cast<GLint>(Level), 0, 0,
Dimensions.x, texture.target() == gli::TARGET_1D_ARRAY ? 0 : Dimensions.y,
Format.Internal, static_cast<GLsizei>(texture.size(Level)),
texture.data(Layer, Face, Level));
else
glTexSubImage2D(
target, static_cast<GLint>(Level), 0, 0,
Dimensions.x, texture.target() == gli::TARGET_1D_ARRAY ? LayerGL : Dimensions.y,
Format.External, Format.Type, texture.data(Layer, Face, Level));
break;
case gli::TARGET_2D_ARRAY:
case gli::TARGET_3D:
case gli::TARGET_CUBE_ARRAY:
if (gli::is_compressed(texture.format()))
glCompressedTexSubImage3D(
target, static_cast<GLint>(Level), 0, 0, 0,
Dimensions.x, Dimensions.y, texture.target() == gli::TARGET_3D ? Dimensions.z : LayerGL,
Format.Internal, static_cast<GLsizei>(texture.size(Level)),
texture.data(Layer, Face, Level));
else
glTexSubImage3D(
target, static_cast<GLint>(Level), 0, 0, 0,
Dimensions.x, Dimensions.y, texture.target() == gli::TARGET_3D ? Dimensions.z : LayerGL,
Format.External, Format.Type, texture.data(Layer, Face, Level));
break;
default: assert(0); break;
}
}
}
}
glGenerateMipmap(target);
glBindTexture(target, 0);
}
inline void tex_storage_1d(TextureTarget target, int32_t levels, uint32_t format, uint32_t width)
{
ARC_GL_CLEAR_ERRORS();
glTexStorage1D((GLenum)target, levels, (GLenum)format, width);
ARC_GL_CHECK_FOR_ERRORS();
}
/**
* Simple views of textures; test rendering with various texture view targets
*/
static bool
test_render_with_targets(GLenum target)
{
GLuint tex, newTex;
GLint width = 128, height = 64, depth = 4, levels = 8;
GLint l;
bool pass = true;
glUseProgram(0);
glGenTextures(1, &tex);
glBindTexture(target, tex);
switch (target) {
case GL_TEXTURE_1D:
glTexStorage1D(target, levels, GL_RGBA8, width);
height = 1;
depth = 1;
break;
case GL_TEXTURE_2D:
glTexStorage2D(target, levels, GL_RGBA8, width, height);
depth = 1;
break;
case GL_TEXTURE_3D:
case GL_TEXTURE_2D_ARRAY:
glTexStorage3D(target, levels, GL_RGBA8, width, height, depth);
break;
default:
/* only handle subset of legal targets */
piglit_report_result(PIGLIT_FAIL);
assert(!"Illegal target for test_render_with_targets()\n");
break;
}
/* load each mipmap with a different color texture */
for (l = 0; l < levels; l++) {
GLubyte *buf = create_solid_image(width, height, depth, 4, l);
if (buf != NULL) {
switch(target) {
case GL_TEXTURE_1D:
glTexSubImage1D(GL_TEXTURE_1D, l, 0, width,
GL_RGBA, GL_UNSIGNED_BYTE, buf);
break;
case GL_TEXTURE_2D:
glTexSubImage2D(GL_TEXTURE_2D, l, 0, 0, width,
height, GL_RGBA,
GL_UNSIGNED_BYTE, buf);
break;
case GL_TEXTURE_3D:
case GL_TEXTURE_2D_ARRAY:
glTexSubImage3D(target, l, 0, 0, 0, width,
height, depth, GL_RGBA,
GL_UNSIGNED_BYTE, buf);
break;
}
free(buf);
} else {
piglit_report_result(PIGLIT_FAIL);
assert(!"create_solid_image() failed\n");
}
if (width > 1)
width /= 2;
if (height > 1)
height /= 2;
if (depth > 1 && target == GL_TEXTURE_3D)
depth /= 2;
}
if (piglit_check_gl_error(GL_NO_ERROR) == GL_FALSE) {
printf("%s: Found gl errors prior to testing glTextureView\n",
TestName);
glDeleteTextures(1, &tex);
return false;
}
/* create view of texture and bind it to target */
glGenTextures(1, &newTex);
glTextureView(newTex, target, tex, GL_RGBA8, 0, levels, 0, 1);
glDeleteTextures(1, &tex);
pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
glActiveTexture(GL_TEXTURE0);
glBindTexture(target, newTex);
/* draw a quad/line using each texture mipmap level */
glTexParameteri(target, GL_TEXTURE_MIN_FILTER,
GL_NEAREST_MIPMAP_NEAREST);
glTexParameteri(target, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
for (l = 0; l < levels; l++) {
GLfloat expected[3];
int p;
glTexParameteri(target, GL_TEXTURE_BASE_LEVEL, l);
glTexParameteri(target, GL_TEXTURE_MAX_LEVEL, l);
glClear(GL_COLOR_BUFFER_BIT);
switch (target) {
case GL_TEXTURE_1D:
glUseProgram(prog1D);
glUniform1i(tex_loc_1D, 0);
piglit_draw_rect_tex(-1.0, -1.0, 2.0, 2.0, 0.0, 0.0,
1.0, 1.0);
break;
case GL_TEXTURE_2D:
glEnable(target);
piglit_draw_rect_tex(-1.0, -1.0, 2.0, 2.0, 0.0, 0.0,
1.0, 1.0);
glDisable(target);
break;
case GL_TEXTURE_2D_ARRAY:
glUseProgram(prog2Darray);
glUniform1i(tex_loc_2Darray, 0);
draw_3d_depth(-1.0, -1.0, 2.0, 2.0, l);
break;
case GL_TEXTURE_3D:
glEnable(target);
draw_3d_depth(-1.0, -1.0, 2.0, 2.0, l);
glDisable(target);
break;
}
expected[0] = Colors[l][0] / 255.0;
expected[1] = Colors[l][1] / 255.0;
expected[2] = Colors[l][2] / 255.0;
p = piglit_probe_pixel_rgb(piglit_width/2, piglit_height/2,
expected);
piglit_present_results();
#if 0 /* debug */
printf("for level=%d, target=%s, expected color=%f %f %f\n",
l, piglit_get_gl_enum_name(target), expected[0],
expected[1], expected[2]);
sleep(1);
#endif
if (!p) {
printf("%s: wrong color for mipmap level %d\n",
TestName, l);
pass = false;
}
}
glDeleteTextures(1, &newTex);
return pass;
}
//---------------------------------------------------------------------------//
void TextureGL4::create(const TextureCreationParams& clDeclaration, CreationMethod eCreationMethod /*= CreationMethod::UPLOADED_ONCE*/)
{
// TODO: Implement Cubemap- and array textures
destroy();
TextureCreationParams* pBaseParams = &m_clParameters;
*pBaseParams = clDeclaration;
GLenum eGLformat, eGLinternalFormat, eGLpixelType;
Adapter::mapGLpixelFormats(clDeclaration.eFormat, clDeclaration.bIsDepthStencil,
eGLformat, eGLinternalFormat, eGLpixelType);
m_clParameters.eFormatGL = eGLformat;
m_clParameters.eInternalFormatGL = eGLinternalFormat;
m_clParameters.ePixelTypeGL = eGLpixelType;
GLenum eTextureType = 0u;
GLenum eTexBindingQuery = 0u;
GLuint uNumDimensions = 0u;
ASSERT(clDeclaration.u16Width > 0u, "Invalid texture dimensions");
if (clDeclaration.u16Height == 0u && clDeclaration.u16Depth == 0u )
{
eTextureType = GL_TEXTURE_1D;
eTexBindingQuery = GL_TEXTURE_BINDING_1D;
uNumDimensions = 1u;
}
else if (clDeclaration.u16Height > 0u && clDeclaration.u16Depth == 0u)
{
eTextureType = GL_TEXTURE_2D;
eTexBindingQuery = GL_TEXTURE_BINDING_2D;
uNumDimensions = 2u;
}
else if (clDeclaration.u16Height > 0u && clDeclaration.u16Depth > 0u)
{
eTextureType = GL_TEXTURE_3D;
eTexBindingQuery = GL_TEXTURE_BINDING_3D;
uNumDimensions = 3u;
}
ASSERT (uNumDimensions > 0u, "Invalid texture dimensions");
m_clParameters.eTextureTypeGL = eTextureType;
m_clParameters.eTexBindQueryGL = eTexBindingQuery;
m_clStateInfo.isArrayTexture = false; // TODO: Implement
m_clStateInfo.isCubemap = false; // TODO: Implement
m_clStateInfo.isLocked = false;
m_clStateInfo.isSRGB = (eGLinternalFormat == GL_SRGB8_ALPHA8 || eGLinternalFormat == GL_SRGB8);
m_clStateInfo.numDimensions = uNumDimensions;
// Determine the max number of miplevels
uint8 u8MipLevelsWidth = clDeclaration.u16Width == 0u ? 0u : glm::log2(clDeclaration.u16Width);
uint8 u8MipLevelsHeight = clDeclaration.u16Height == 0u ? 0u : glm::log2(clDeclaration.u16Height);
uint8 u8MipLevelsDepth = clDeclaration.u16Depth == 0u ? 0u : glm::log2(clDeclaration.u16Depth);
uint8 u8MaxMipLevels = u8MipLevelsWidth;
if (uNumDimensions > 1u) {
u8MaxMipLevels = glm::min(u8MaxMipLevels, u8MipLevelsHeight);
}
if (uNumDimensions > 2u) {
u8MaxMipLevels = glm::min(u8MaxMipLevels, u8MipLevelsDepth);
}
m_clParameters.u8NumMipLevels =
glm::min(glm::max(static_cast<uint8>(1u), m_clParameters.u8NumMipLevels), u8MaxMipLevels);
// Internally store the raw texture data if required
m_clStateInfo.cachesTextureData = false;
if (m_clParameters.pPixelData != nullptr && eCreationMethod == CreationMethod::UPLOADED_OFTEN) {
void* pDataCache = FANCY_ALLOCATE(m_clParameters.uPixelDataSizeBytes, MemoryCategory::TEXTURES);
memcpy(pDataCache, m_clParameters.pPixelData, m_clParameters.uPixelDataSizeBytes);
m_clParameters.pPixelData = pDataCache;
m_clStateInfo.cachesTextureData = true;
}
// determine the currently bound texture
GLint origBoundTexture;
glGetIntegerv(eTexBindingQuery, &origBoundTexture);
// construct the new texture
glGenTextures(1u, &m_uGLhandle);
glBindTexture(eTextureType, m_uGLhandle);
if (uNumDimensions == 2u) {
glTexStorage2D(eTextureType, m_clParameters.u8NumMipLevels, eGLinternalFormat,
m_clParameters.u16Width, m_clParameters.u16Height );
}
else if (uNumDimensions == 3u) {
glTexStorage3D(eTextureType, m_clParameters.u8NumMipLevels, eGLinternalFormat,
m_clParameters.u16Width, m_clParameters.u16Height, m_clParameters.u16Depth );
}
else {
glTexStorage1D(eTextureType, m_clParameters.u8NumMipLevels, eGLinternalFormat,
m_clParameters.u16Width );
}
if (m_clParameters.pPixelData != nullptr) {
setPixelData(m_clParameters.pPixelData, m_clParameters.uPixelDataSizeBytes);
}
// restore originally bound texture
glBindTexture(eTextureType, static_cast<GLuint>(origBoundTexture));
}
PIGLIT_GL_TEST_CONFIG_END
enum piglit_result
piglit_display(void)
{
GLuint tex[3];
GLint level;
GLint num_level;
/* The GL ES 3.0 spec says:
*
* "The [initial] value of TEXTURE_IMMUTABLE_LEVELS is 0."
*/
glGetTexParameteriv(GL_TEXTURE_2D, GL_TEXTURE_IMMUTABLE_LEVELS, &level);
if (!piglit_check_gl_error(GL_NO_ERROR)) {
piglit_report_result(PIGLIT_FAIL);
}
if (level != 0) {
printf("Expected 0 levels initially, but glGetTexParameteriv "
"returned %d for GL_TEXTURE_1D.\n", level);
piglit_report_result(PIGLIT_FAIL);
}
glGenTextures(5, tex);
glBindTexture(GL_TEXTURE_1D, tex[0]);
glTexStorage1D(GL_TEXTURE_1D, 3, GL_RGBA8, 32);
glGetTexParameteriv(GL_TEXTURE_1D, GL_TEXTURE_IMMUTABLE_LEVELS, &level);
glGetTexParameteriv(GL_TEXTURE_1D, GL_TEXTURE_VIEW_NUM_LEVELS, &num_level);
if (level != 3) {
printf("Expected 3 levels, but glGetTexParameteriv returned "
"%d for GL_TEXTURE_1D.\n", level);
piglit_report_result(PIGLIT_FAIL);
} else if (level != num_level) {
printf("Expected queries of TEXTURE_IMMUTABLE_LEVELS and "
"TEXTURE_VIEW_NUM_LEVELS to return identical results.");
piglit_report_result(PIGLIT_FAIL);
}
glBindTexture(GL_TEXTURE_2D, tex[1]);
glTexStorage2D(GL_TEXTURE_2D, 3, GL_RGBA8, 32, 32);
glGetTexParameteriv(GL_TEXTURE_2D, GL_TEXTURE_IMMUTABLE_LEVELS, &level);
glGetTexParameteriv(GL_TEXTURE_2D, GL_TEXTURE_VIEW_NUM_LEVELS, &num_level);
if (level != 3) {
printf("Expected 3 levels, but glGetTexParameteriv returned "
"%d for GL_TEXTURE_2D.\n", level);
piglit_report_result(PIGLIT_FAIL);
} else if (level != num_level) {
printf("Expected queries of TEXTURE_IMMUTABLE_LEVELS and "
"TEXTURE_VIEW_NUM_LEVELS to return identical results.");
piglit_report_result(PIGLIT_FAIL);
}
glBindTexture(GL_TEXTURE_3D, tex[2]);
glTexStorage3D(GL_TEXTURE_3D, 3, GL_RGBA8, 32, 32, 32);
glGetTexParameteriv(GL_TEXTURE_3D, GL_TEXTURE_IMMUTABLE_LEVELS, &level);
glGetTexParameteriv(GL_TEXTURE_3D, GL_TEXTURE_VIEW_NUM_LEVELS, &num_level);
if (level != 3) {
printf("Expected 3 levels, but glGetTexParameterfv returned "
"%d for GL_TEXTURE_3D.\n", level);
piglit_report_result(PIGLIT_FAIL);
} else if (level != num_level) {
printf("Expected queries of TEXTURE_IMMUTABLE_LEVELS and "
"TEXTURE_VIEW_NUM_LEVELS to return identical results.");
piglit_report_result(PIGLIT_FAIL);
}
glBindTexture(GL_TEXTURE_2D, tex[3]);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 32, 32, 0, GL_RGBA, GL_FLOAT, NULL);
glGetTexParameteriv(GL_TEXTURE_2D, GL_TEXTURE_IMMUTABLE_LEVELS, &level);
if (level != 0) {
printf("Expected 0 levels, but glGetTexParameteriv returned "
"%d for GL_TEXTURE_2D.\n", level);
piglit_report_result(PIGLIT_FAIL);
}
glBindTexture(GL_TEXTURE_3D, tex[4]);
glTexImage2D(GL_TEXTURE_3D, 0, GL_RGBA, 32, 32, 32, GL_RGBA, GL_FLOAT, NULL);
glGetTexParameteriv(GL_TEXTURE_3D, GL_TEXTURE_IMMUTABLE_LEVELS, &level);
if (level != 0) {
printf("Expected 0 levels, but glGetTexParameteriv returned "
"%d for GL_TEXTURE_3D.\n", level);
piglit_report_result(PIGLIT_FAIL);
}
glDeleteTextures(5, tex);
piglit_report_result(PIGLIT_PASS);
return 0;
}
OceanSurface::OceanSurface(int N, int M, float L_x, float L_z, float A, glm::vec2 _wind, float g, bool _lines, bool _gpu) : N(N), M(M), L_x(L_x),
L_z(L_z), A(A), wind(_wind), g(g), lines(_lines), gpu(_gpu) {
grid = new surface_vertex[N * M]; // construct wave height field grid
init_positions = new vertex_2d[N * M];
grid_tex_cord = new tex_img_coord[N * N];
h_t0 = new complex_number[N * M];
h_t0_cc = new complex_number[N * M];
h_fft = new complex_number[N * M];
dx_fft = new complex_number[N * M];
dz_fft = new complex_number[N * M];
gradient_x = new complex_number[N * M];
gradient_z = new complex_number[N * M];
lambda = -1.0f; // numeric constant for calculating displacement
num_indices = 0;
num_triangle_indices = 0;
indices = new GLuint[(N - 1) * (M - 1) * 6 + 2 * (N + M - 2)];
triangle_indices = new GLuint[(N - 1) * (M - 1) * 6 * 10];
if (gpu) {
wind = glm::vec2(wind.y, wind.x);
}
//fft
myFFT = new MyFFT(N, M);
// compute shader FFT stuff
char *s_name = "compute_shaders/fft_compute.glsl";
if (N == 32) {
s_name = "compute_shaders/fft_compute_32.glsl";
}
if (N == 64) {
s_name = "compute_shaders/fft_compute_64.glsl";
}
if (N == 128) {
s_name = "compute_shaders/fft_compute_128.glsl";
}
if (N == 256) {
s_name = "compute_shaders/fft_compute_256.glsl";
}
if (N == 512) {
s_name = "compute_shaders/fft_compute_512.glsl";
}
fft_comp_program = create_comp_program_from_file(s_name);
int bits = log2(N * 1.0f);
calc_binary_reverse(bits);
glGenBuffers(1, &rev_ind_buffer);
glBindBuffer(GL_SHADER_STORAGE_BUFFER, rev_ind_buffer);
glBufferData(GL_SHADER_STORAGE_BUFFER, N * sizeof(int), binary_reverse, GL_STATIC_DRAW);
glBindBuffer(GL_SHADER_STORAGE_BUFFER, 0);
GLint steps_location = glGetUniformLocation(fft_comp_program, "steps");
fft_column_location = glGetUniformLocation(fft_comp_program, "fft_column");
glUseProgram(fft_comp_program);
glUniform1i(steps_location, bits);
// texture for inpute height map
glGenTextures(1, &texture_H_t);
glBindTexture(GL_TEXTURE_2D, texture_H_t);
glTexStorage2D(GL_TEXTURE_2D, 1, GL_RG32F, N, N);
//glTexImage2D(GL_TEXTURE_2D, 0, GL_RG32F, N, N, 0, GL_RG, GL_FLOAT, 0);
/*glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);*/
// texture for output height map per rows
glGenTextures(1, &texture_H_fft_t_row);
glBindTexture(GL_TEXTURE_2D, texture_H_fft_t_row);
glTexStorage2D(GL_TEXTURE_2D, 1, GL_RG32F, N, N);
/*glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);*/
// texture for output height map per columns
glGenTextures(1, &texture_H_fft_t_col);
glBindTexture(GL_TEXTURE_2D, texture_H_fft_t_col);
glTexStorage2D(GL_TEXTURE_2D, 1, GL_RG32F, N, N);
/*glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);*/
// texture for fft dx
glGenTextures(1, &tex_dx_fft_row);
glBindTexture(GL_TEXTURE_2D, tex_dx_fft_row);
glTexStorage2D(GL_TEXTURE_2D, 1, GL_RG32F, N, N);
glGenTextures(1, &tex_dx_fft);
glBindTexture(GL_TEXTURE_2D, tex_dx_fft);
glTexStorage2D(GL_TEXTURE_2D, 1, GL_RG32F, N, N);
// texture for fft dz
glGenTextures(1, &tex_dz_fft_row);
glBindTexture(GL_TEXTURE_2D, tex_dz_fft_row);
glTexStorage2D(GL_TEXTURE_2D, 1, GL_RG32F, N, N);
glGenTextures(1, &tex_dz_fft);
glBindTexture(GL_TEXTURE_2D, tex_dz_fft);
glTexStorage2D(GL_TEXTURE_2D, 1, GL_RG32F, N, N);
// texture for fft gradx
glGenTextures(1, &tex_gradx_fft_row);
glBindTexture(GL_TEXTURE_2D, tex_gradx_fft_row);
glTexStorage2D(GL_TEXTURE_2D, 1, GL_RG32F, N, N);
glGenTextures(1, &tex_gradx_fft);
glBindTexture(GL_TEXTURE_2D, tex_gradx_fft);
glTexStorage2D(GL_TEXTURE_2D, 1, GL_RG32F, N, N);
// texture for fft gradz
glGenTextures(1, &tex_gradz_fft_row);
glBindTexture(GL_TEXTURE_2D, tex_gradz_fft_row);
glTexStorage2D(GL_TEXTURE_2D, 1, GL_RG32F, N, N);
glGenTextures(1, &tex_gradz_fft);
glBindTexture(GL_TEXTURE_2D, tex_gradz_fft);
glTexStorage2D(GL_TEXTURE_2D, 1, GL_RG32F, N, N);
// unbind all textures
glBindTexture(GL_TEXTURE_2D, 0);
// assign each point its original 3d coordinates
for (int i = 0; i < N; i++)
for (int j = 0; j < M; j++) {
int pos = i * M + j; // one-dimensional pos from linear two-dimensional grid
grid_tex_cord[pos] = tex_img_coord(i, j);
// precomputer amplitudes at each point
h_t0[pos] = h_t_0(i, j);
h_t0_cc[pos] = h_t_0(-i, -j).cc();
// we project our N*M grid coordinates to real world L_x*L_z coordinates
grid[pos].x = (i - (N >> 1)) * L_x / N;
grid[pos].y = 0.0f; // height is 0
grid[pos].z = (j - (M >> 1)) * L_z / M;
// save initial positions
init_positions[pos].x = grid[pos].x;
init_positions[pos].z = grid[pos].z;
// construct indices for index drawing
if (i != N - 1 && j != M - 1) {
indices[num_indices++] = pos;
indices[num_indices++] = pos + 1;
indices[num_indices++] = pos;
indices[num_indices++] = pos + M;
indices[num_indices++] = pos;
indices[num_indices++] = pos + M + 1;
}
if (i != N - 1 && j == M - 1) {
indices[num_indices++] = pos;
indices[num_indices++] = pos + M;
}
if (i == N - 1 && j != M - 1) {
indices[num_indices++] = pos;
indices[num_indices++] = pos + 1;
}
// construct indices for triangle index drawing
if (i != N - 1 && j != M - 1) {
triangle_indices[num_triangle_indices++] = pos;
triangle_indices[num_triangle_indices++] = pos + N + 1;
triangle_indices[num_triangle_indices++] = pos + 1;
triangle_indices[num_triangle_indices++] = pos;
triangle_indices[num_triangle_indices++] = pos + N;
triangle_indices[num_triangle_indices++] = pos + N + 1;
}
}
// check that its okay
assert(num_indices == (N - 1) * (M - 1) * 6 + 2 * (N + M - 2));
//assert(num_triangle_indices, (N - 1) * (M - 1) * 6);
prepare_for_pipeline();
// update height map compute shader program
upd_height_program = create_comp_program_from_file("compute_shaders/update_height_map.glsl");
GLint len_location = glGetUniformLocation(upd_height_program, "L");;
GLint n_location = glGetUniformLocation(upd_height_program, "N");
total_time_location = glGetUniformLocation(upd_height_program, "totalTime");
glUseProgram(upd_height_program);
glUniform1f(len_location, L_x);
glUniform1i(n_location, N);
glUseProgram(0);
// height map textures
glGenTextures(1, &texture_H_t0);
glGenTextures(1, &texture_H_t0_cc);
glBindTexture(GL_TEXTURE_2D, texture_H_t0);
glTexStorage2D(GL_TEXTURE_2D, 1, GL_RG32F, N, N);
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, N, N, GL_RG, GL_FLOAT, h_t0);
glBindTexture(GL_TEXTURE_2D, texture_H_t0_cc);
glTexStorage2D(GL_TEXTURE_2D, 1, GL_RG32F, N, N);
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, N, N, GL_RG, GL_FLOAT, h_t0_cc);
glBindTexture(GL_TEXTURE_2D, 0);
// displacement map textures
glGenTextures(1, &texture_Dx);
glGenTextures(1, &texture_Dz);
glBindTexture(GL_TEXTURE_2D, texture_Dx);
glTexStorage2D(GL_TEXTURE_2D, 1, GL_RG32F, N, N);
glBindTexture(GL_TEXTURE_2D, texture_Dz);
glTexStorage2D(GL_TEXTURE_2D, 1, GL_RG32F, N, N);
glBindTexture(GL_TEXTURE_2D, 0);
// gradient map textures
glGenTextures(1, &texture_Gradx);
glGenTextures(1, &texture_Gradz);
glBindTexture(GL_TEXTURE_2D, texture_Gradx);
glTexStorage2D(GL_TEXTURE_2D, 1, GL_RG32F, N, N);
glBindTexture(GL_TEXTURE_2D, texture_Gradz);
glTexStorage2D(GL_TEXTURE_2D, 1, GL_RG32F, N, N);
glBindTexture(GL_TEXTURE_2D, 0);
// Fresnel textures
int fres_size = 128;
float g_SkyBlending = 16.0f;
unsigned int *buffer = new unsigned int[fres_size];
for (int i = 0; i < fres_size; i++)
{
float cos_a = i / (float)fres_size;
// Using water's refraction index 1.33
unsigned int fresnel = (unsigned int)(D3DXFresnelTerm(cos_a, 1.33f) * 255);
unsigned int sky_blend = (unsigned int)(powf(1 / (1 + cos_a), g_SkyBlending) * 255);
buffer[i] = (sky_blend << 8) | fresnel;
}
glGenTextures(1, &tex_Fresnel);
glBindTexture(GL_TEXTURE_1D, tex_Fresnel);
glTexStorage1D(GL_TEXTURE_1D, 1, GL_RGBA8, fres_size);
glTexSubImage1D(GL_TEXTURE_1D, 0, 0, fres_size, GL_RGBA, GL_UNSIGNED_INT, buffer);
const GLfloat border[] = { 1.0f, 1.0f, 1.0f, 1.0f };
glTexParameterfv(GL_TEXTURE_1D, GL_TEXTURE_BORDER_COLOR, border);
glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_COMPARE_FUNC, GL_NEVER);
glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_BORDER);
glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_BORDER);
glBindTexture(GL_TEXTURE_1D, 0);
delete[] buffer;
// Reflect cube textures
tex_ReflectCube = SOIL_load_OGL_single_cubemap
(
"textures/sky_cube.dds",
SOIL_DDS_CUBEMAP_FACE_ORDER,
SOIL_LOAD_AUTO,
SOIL_CREATE_NEW_ID,
SOIL_FLAG_MIPMAPS | SOIL_FLAG_DDS_LOAD_DIRECT
);
}