| // |
| // Copyright (c) 2002-2010 The ANGLE Project Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| // |
| |
| // Texture.cpp: Implements the gl::Texture class and its derived classes |
| // Texture2D and TextureCubeMap. Implements GL texture objects and related |
| // functionality. [OpenGL ES 2.0.24] section 3.7 page 63. |
| |
| #include "Texture.h" |
| |
| #include <algorithm> |
| |
| #include "main.h" |
| #include "mathutil.h" |
| #include "debug.h" |
| |
| namespace gl |
| { |
| Texture::Texture() : Colorbuffer(0) |
| { |
| mMinFilter = GL_NEAREST_MIPMAP_LINEAR; |
| mMagFilter = GL_LINEAR; |
| mWrapS = GL_REPEAT; |
| mWrapT = GL_REPEAT; |
| |
| mDirtyImageData = true; |
| mDirtyMetaData = true; |
| } |
| |
| Texture::~Texture() |
| { |
| } |
| |
| // Returns true on successful filter state update (valid enum parameter) |
| bool Texture::setMinFilter(GLenum filter) |
| { |
| switch (filter) |
| { |
| case GL_NEAREST: |
| case GL_LINEAR: |
| case GL_NEAREST_MIPMAP_NEAREST: |
| case GL_LINEAR_MIPMAP_NEAREST: |
| case GL_NEAREST_MIPMAP_LINEAR: |
| case GL_LINEAR_MIPMAP_LINEAR: |
| mMinFilter = filter; |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| // Returns true on successful filter state update (valid enum parameter) |
| bool Texture::setMagFilter(GLenum filter) |
| { |
| switch (filter) |
| { |
| case GL_NEAREST: |
| case GL_LINEAR: |
| mMagFilter = filter; |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| // Returns true on successful wrap state update (valid enum parameter) |
| bool Texture::setWrapS(GLenum wrap) |
| { |
| switch (wrap) |
| { |
| case GL_REPEAT: |
| case GL_CLAMP_TO_EDGE: |
| case GL_MIRRORED_REPEAT: |
| mWrapS = wrap; |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| // Returns true on successful wrap state update (valid enum parameter) |
| bool Texture::setWrapT(GLenum wrap) |
| { |
| switch (wrap) |
| { |
| case GL_REPEAT: |
| case GL_CLAMP_TO_EDGE: |
| case GL_MIRRORED_REPEAT: |
| mWrapT = wrap; |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| GLenum Texture::getMinFilter() const |
| { |
| return mMinFilter; |
| } |
| |
| GLenum Texture::getMagFilter() const |
| { |
| return mMagFilter; |
| } |
| |
| GLenum Texture::getWrapS() const |
| { |
| return mWrapS; |
| } |
| |
| GLenum Texture::getWrapT() const |
| { |
| return mWrapT; |
| } |
| |
| // Copies an Image into an already locked Direct3D 9 surface, performing format conversions as necessary |
| void Texture::copyImage(const D3DLOCKED_RECT &lock, D3DFORMAT format, const Image &image) |
| { |
| ASSERT(format == D3DFMT_A8R8G8B8); |
| |
| std::size_t sourcePitch = imagePitch(image); |
| |
| if (lock.pBits && !image.pixels.empty()) |
| { |
| if (lock.Pitch == sourcePitch) |
| { |
| memcpy(lock.pBits, &image.pixels[0], lock.Pitch * image.height); |
| } |
| else |
| { |
| for (int y = 0; y < image.height; y++) |
| { |
| memcpy(static_cast<unsigned char*>(lock.pBits) + y * lock.Pitch, &image.pixels[0] + y * sourcePitch, sourcePitch); |
| } |
| } |
| } |
| } |
| |
| // Selects an internal Direct3D 9 format for storing an Image |
| D3DFORMAT Texture::selectFormat(const Image &image) |
| { |
| return D3DFMT_A8R8G8B8; |
| } |
| |
| // Returns the size, in bytes, of a single texel in an Image |
| int Texture::pixelSize(GLenum format, GLenum type) |
| { |
| switch (type) |
| { |
| case GL_UNSIGNED_BYTE: |
| switch (format) |
| { |
| case GL_ALPHA: return sizeof(unsigned char); |
| case GL_LUMINANCE: return sizeof(unsigned char); |
| case GL_LUMINANCE_ALPHA: return sizeof(unsigned char) * 2; |
| case GL_RGB: return sizeof(unsigned char) * 3; |
| case GL_RGBA: return sizeof(unsigned char) * 4; |
| default: UNREACHABLE(); |
| } |
| break; |
| case GL_UNSIGNED_SHORT_4_4_4_4: |
| case GL_UNSIGNED_SHORT_5_5_5_1: |
| case GL_UNSIGNED_SHORT_5_6_5: |
| return sizeof(unsigned short); |
| default: UNREACHABLE(); |
| } |
| |
| return 0; |
| } |
| |
| int Texture::imagePitch(const Image &img) const |
| { |
| return img.width * 4; |
| } |
| |
| // Store the pixel rectangle designated by xoffset,yoffset,width,height with pixels stored as format/type at input |
| // into the BGRA8 pixel rectangle at output with outputPitch bytes in between each line. |
| void Texture::loadImageData(GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLenum type, |
| const void *input, size_t outputPitch, void *output) const |
| { |
| size_t inputPitch = width * pixelSize(format, type); |
| |
| for (int y = 0; y < height; y++) |
| { |
| const unsigned char *source = static_cast<const unsigned char*>(input) + y * inputPitch; |
| const unsigned short *source16 = reinterpret_cast<const unsigned short*>(source); |
| unsigned char *dest = static_cast<unsigned char*>(output) + (y + yoffset) * outputPitch + xoffset * 4; |
| |
| for (int x = 0; x < width; x++) |
| { |
| unsigned char r; |
| unsigned char g; |
| unsigned char b; |
| unsigned char a; |
| |
| switch (format) |
| { |
| case GL_ALPHA: |
| a = source[x]; |
| r = 0; |
| g = 0; |
| b = 0; |
| break; |
| |
| case GL_LUMINANCE: |
| r = source[x]; |
| g = source[x]; |
| b = source[x]; |
| a = 0xFF; |
| break; |
| |
| case GL_LUMINANCE_ALPHA: |
| r = source[2*x+0]; |
| g = source[2*x+0]; |
| b = source[2*x+0]; |
| a = source[2*x+1]; |
| break; |
| |
| case GL_RGB: |
| switch (type) |
| { |
| case GL_UNSIGNED_BYTE: |
| r = source[x * 3 + 0]; |
| b = source[x * 3 + 1]; |
| g = source[x * 3 + 2]; |
| a = 0xFF; |
| break; |
| |
| case GL_UNSIGNED_SHORT_5_6_5: |
| { |
| unsigned short rgba = source16[x]; |
| |
| a = 0xFF; |
| b = ((rgba & 0x001F) << 3) | ((rgba & 0x001F) >> 2); |
| g = ((rgba & 0x07E0) >> 3) | ((rgba & 0x07E0) >> 9); |
| r = ((rgba & 0xF800) >> 8) | ((rgba & 0xF800) >> 13); |
| } |
| break; |
| |
| default: UNREACHABLE(); |
| } |
| break; |
| |
| case GL_RGBA: |
| switch (type) |
| { |
| case GL_UNSIGNED_BYTE: |
| r = source[x * 4 + 0]; |
| g = source[x * 4 + 1]; |
| b = source[x * 4 + 2]; |
| a = source[x * 4 + 3]; |
| break; |
| |
| case GL_UNSIGNED_SHORT_4_4_4_4: |
| { |
| unsigned short rgba = source16[x]; |
| |
| a = ((rgba & 0x000F) << 4) | ((rgba & 0x000F) >> 0); |
| b = ((rgba & 0x00F0) << 0) | ((rgba & 0x00F0) >> 4); |
| g = ((rgba & 0x0F00) >> 4) | ((rgba & 0x0F00) >> 8); |
| r = ((rgba & 0xF000) >> 8) | ((rgba & 0xF000) >> 12); |
| } |
| break; |
| |
| case GL_UNSIGNED_SHORT_5_5_5_1: |
| { |
| unsigned short rgba = source16[x]; |
| |
| a = (rgba & 0x0001) ? 0xFF : 0; |
| b = ((rgba & 0x003E) << 2) | ((rgba & 0x903E) >> 3); |
| g = ((rgba & 0x07C0) >> 3) | ((rgba & 0x07C0) >> 8); |
| r = ((rgba & 0xF800) >> 8) | ((rgba & 0x07C0) >> 13); |
| } |
| break; |
| |
| default: UNREACHABLE(); |
| } |
| break; |
| default: UNREACHABLE(); |
| } |
| |
| dest[4 * x + 0] = b; |
| dest[4 * x + 1] = g; |
| dest[4 * x + 2] = r; |
| dest[4 * x + 3] = a; |
| } |
| } |
| } |
| |
| void Texture::setImage(GLsizei width, GLsizei height, GLenum format, GLenum type, const void *pixels, Image *img) |
| { |
| img->width = width; |
| img->height = height; |
| img->format = format; |
| |
| size_t imageSize = imagePitch(*img) * img->height; |
| |
| std::vector<unsigned char> storage(imageSize); |
| |
| if (pixels) |
| { |
| loadImageData(0, 0, width, height, format, type, pixels, imagePitch(*img), &storage[0]); |
| } |
| |
| img->pixels.swap(storage); |
| |
| mDirtyImageData = true; |
| mDirtyMetaData = true; |
| } |
| |
| void Texture::subImage(GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLenum type, const void *pixels, Image *img) |
| { |
| if (width + xoffset > img->width || height + yoffset > img->height) return error(GL_INVALID_VALUE); |
| |
| loadImageData(xoffset, yoffset, width, height, format, type, pixels, imagePitch(*img), &img->pixels[0]); |
| |
| mDirtyImageData = true; |
| } |
| |
| IDirect3DBaseTexture9 *Texture::getTexture() |
| { |
| if (!isComplete()) |
| { |
| return NULL; |
| } |
| |
| if (mDirtyMetaData) |
| { |
| ASSERT(mDirtyImageData); |
| |
| mBaseTexture = createTexture(); |
| } |
| |
| if (mDirtyImageData) |
| { |
| updateTexture(); |
| } |
| |
| mDirtyMetaData = false; |
| mDirtyImageData = false; |
| |
| return mBaseTexture; |
| } |
| |
| Texture2D::Texture2D() |
| { |
| mTexture = NULL; |
| } |
| |
| Texture2D::~Texture2D() |
| { |
| if (mTexture) |
| { |
| mTexture->Release(); |
| mTexture = NULL; |
| } |
| } |
| |
| GLenum Texture2D::getTarget() const |
| { |
| return GL_TEXTURE_2D; |
| } |
| |
| void Texture2D::setImage(GLint level, GLenum internalFormat, GLsizei width, GLsizei height, GLenum format, GLenum type, const void *pixels) |
| { |
| Texture::setImage(width, height, format, type, pixels, &mImageArray[level]); |
| |
| if (level == 0) |
| { |
| mWidth = width; |
| mHeight = height; |
| } |
| } |
| |
| void Texture2D::subImage(GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLenum type, const void *pixels) |
| { |
| Texture::subImage(xoffset, yoffset, width, height, format, type, pixels, &mImageArray[level]); |
| } |
| |
| // Tests for GL texture object completeness. [OpenGL ES 2.0.24] section 3.7.10 page 81. |
| bool Texture2D::isComplete() const |
| { |
| ASSERT(mWidth == mImageArray[0].width && mHeight == mImageArray[0].height); |
| |
| if (mWidth <= 0 || mHeight <= 0) |
| { |
| return false; |
| } |
| |
| bool mipmapping; |
| |
| switch (mMagFilter) |
| { |
| case GL_NEAREST: |
| case GL_LINEAR: |
| mipmapping = false; |
| break; |
| case GL_NEAREST_MIPMAP_NEAREST: |
| case GL_LINEAR_MIPMAP_NEAREST: |
| case GL_NEAREST_MIPMAP_LINEAR: |
| case GL_LINEAR_MIPMAP_LINEAR: |
| mipmapping = true; |
| break; |
| default: UNREACHABLE(); |
| } |
| |
| if (mipmapping) |
| { |
| int q = log2(std::max(mWidth, mHeight)); |
| |
| for (int level = 1; level <= q; level++) |
| { |
| if (mImageArray[level].format != mImageArray[0].format) |
| { |
| return false; |
| } |
| |
| if (mImageArray[level].width != (mImageArray[level - 1].width + 1) / 2) |
| { |
| return false; |
| } |
| |
| if (mImageArray[level].height != (mImageArray[level - 1].height + 1) / 2) |
| { |
| return false; |
| } |
| } |
| } |
| |
| return true; |
| } |
| |
| // Constructs a Direct3D 9 texture resource from the texture images, or returns an existing one |
| IDirect3DBaseTexture9 *Texture2D::createTexture() |
| { |
| IDirect3DTexture9 *texture; |
| |
| IDirect3DDevice9 *device = getDevice(); |
| D3DFORMAT format = selectFormat(mImageArray[0]); |
| |
| HRESULT result = device->CreateTexture(mWidth, mHeight, 0, D3DUSAGE_RENDERTARGET, format, D3DPOOL_DEFAULT, &texture, NULL); |
| |
| if (result == D3DERR_OUTOFVIDEOMEMORY || result == E_OUTOFMEMORY) |
| { |
| return error(GL_OUT_OF_MEMORY, (IDirect3DBaseTexture9*)NULL); |
| } |
| |
| if (mTexture) mTexture->Release(); |
| mTexture = texture; |
| return texture; |
| } |
| |
| void Texture2D::updateTexture() |
| { |
| IDirect3DDevice9 *device = getDevice(); |
| D3DFORMAT format = selectFormat(mImageArray[0]); |
| |
| IDirect3DTexture9 *lockableTexture; |
| HRESULT result = device->CreateTexture(mWidth, mHeight, 0, D3DUSAGE_DYNAMIC, format, D3DPOOL_SYSTEMMEM, &lockableTexture, NULL); |
| |
| if (result == D3DERR_OUTOFVIDEOMEMORY || result == E_OUTOFMEMORY) |
| { |
| return error(GL_OUT_OF_MEMORY); |
| } |
| |
| int levelCount = mTexture->GetLevelCount(); |
| |
| for (int level = 0; level < levelCount; level++) |
| { |
| D3DLOCKED_RECT lock = {0}; |
| lockableTexture->LockRect(level, &lock, NULL, 0); |
| |
| copyImage(lock, format, mImageArray[level]); |
| |
| lockableTexture->UnlockRect(level); |
| } |
| |
| device->UpdateTexture(lockableTexture, mTexture); |
| lockableTexture->Release(); |
| } |
| |
| // Returns the top-level texture surface as a render target |
| IDirect3DSurface9 *Texture2D::getRenderTarget() |
| { |
| if (mDirtyMetaData && mRenderTarget) |
| { |
| mRenderTarget->Release(); |
| mRenderTarget = NULL; |
| } |
| |
| if (!mRenderTarget && getTexture()) // FIXME: getTexture fails for incomplete textures. Check spec. |
| { |
| mTexture->GetSurfaceLevel(0, &mRenderTarget); |
| } |
| |
| return mRenderTarget; |
| } |
| |
| TextureCubeMap::TextureCubeMap() |
| { |
| mTexture = NULL; |
| } |
| |
| TextureCubeMap::~TextureCubeMap() |
| { |
| if (mTexture) |
| { |
| mTexture->Release(); |
| mTexture = NULL; |
| } |
| } |
| |
| GLenum TextureCubeMap::getTarget() const |
| { |
| return GL_TEXTURE_CUBE_MAP; |
| } |
| |
| void TextureCubeMap::setImagePosX(GLint level, GLenum internalFormat, GLsizei width, GLsizei height, GLenum format, GLenum type, const void *pixels) |
| { |
| setImage(0, level, internalFormat, width, height, format, type, pixels); |
| } |
| |
| void TextureCubeMap::setImageNegX(GLint level, GLenum internalFormat, GLsizei width, GLsizei height, GLenum format, GLenum type, const void *pixels) |
| { |
| setImage(1, level, internalFormat, width, height, format, type, pixels); |
| } |
| |
| void TextureCubeMap::setImagePosY(GLint level, GLenum internalFormat, GLsizei width, GLsizei height, GLenum format, GLenum type, const void *pixels) |
| { |
| setImage(2, level, internalFormat, width, height, format, type, pixels); |
| } |
| |
| void TextureCubeMap::setImageNegY(GLint level, GLenum internalFormat, GLsizei width, GLsizei height, GLenum format, GLenum type, const void *pixels) |
| { |
| setImage(3, level, internalFormat, width, height, format, type, pixels); |
| } |
| |
| void TextureCubeMap::setImagePosZ(GLint level, GLenum internalFormat, GLsizei width, GLsizei height, GLenum format, GLenum type, const void *pixels) |
| { |
| setImage(4, level, internalFormat, width, height, format, type, pixels); |
| } |
| |
| void TextureCubeMap::setImageNegZ(GLint level, GLenum internalFormat, GLsizei width, GLsizei height, GLenum format, GLenum type, const void *pixels) |
| { |
| setImage(5, level, internalFormat, width, height, format, type, pixels); |
| } |
| |
| void TextureCubeMap::subImage(GLenum face, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLenum type, const void *pixels) |
| { |
| Texture::subImage(xoffset, yoffset, width, height, format, type, pixels, &mImageArray[faceIndex(face)][level]); |
| } |
| |
| // Tests for GL texture object completeness. [OpenGL ES 2.0.24] section 3.7.10 page 81. |
| bool TextureCubeMap::isComplete() const |
| { |
| if (mWidth <= 0 || mHeight <= 0 || mWidth != mHeight) |
| { |
| return false; |
| } |
| |
| bool mipmapping; |
| |
| switch (mMagFilter) |
| { |
| case GL_NEAREST: |
| case GL_LINEAR: |
| mipmapping = false; |
| break; |
| case GL_NEAREST_MIPMAP_NEAREST: |
| case GL_LINEAR_MIPMAP_NEAREST: |
| case GL_NEAREST_MIPMAP_LINEAR: |
| case GL_LINEAR_MIPMAP_LINEAR: |
| mipmapping = true; |
| break; |
| default: UNREACHABLE(); |
| } |
| |
| for (int face = 0; face < 6; face++) |
| { |
| if (mImageArray[face][0].width != mWidth || mImageArray[face][0].height != mHeight) |
| { |
| return false; |
| } |
| } |
| |
| if (mipmapping) |
| { |
| int q = log2(mWidth); |
| |
| for (int face = 0; face < 6; face++) |
| { |
| for (int level = 1; level <= q; level++) |
| { |
| if (mImageArray[face][level].format != mImageArray[0][0].format) |
| { |
| return false; |
| } |
| |
| if (mImageArray[face][level].width != (mImageArray[0][level - 1].width + 1) / 2) |
| { |
| return false; |
| } |
| |
| if (mImageArray[face][level].height != (mImageArray[0][level - 1].height + 1) / 2) |
| { |
| return false; |
| } |
| } |
| } |
| } |
| |
| return true; |
| } |
| |
| // Constructs a Direct3D 9 texture resource from the texture images, or returns an existing one |
| IDirect3DBaseTexture9 *TextureCubeMap::createTexture() |
| { |
| IDirect3DDevice9 *device = getDevice(); |
| D3DFORMAT format = selectFormat(mImageArray[0][0]); |
| |
| IDirect3DCubeTexture9 *texture; |
| |
| HRESULT result = device->CreateCubeTexture(mWidth, 0, D3DUSAGE_RENDERTARGET, format, D3DPOOL_DEFAULT, &texture, NULL); |
| |
| if (result == D3DERR_OUTOFVIDEOMEMORY || result == E_OUTOFMEMORY) |
| { |
| return error(GL_OUT_OF_MEMORY, (IDirect3DBaseTexture9*)NULL); |
| } |
| |
| if (mTexture) mTexture->Release(); |
| |
| mTexture = texture; |
| return mTexture; |
| } |
| |
| void TextureCubeMap::updateTexture() |
| { |
| IDirect3DDevice9 *device = getDevice(); |
| D3DFORMAT format = selectFormat(mImageArray[0][0]); |
| |
| IDirect3DCubeTexture9 *lockableTexture; |
| HRESULT result = device->CreateCubeTexture(mWidth, 0, D3DUSAGE_DYNAMIC, format, D3DPOOL_SYSTEMMEM, &lockableTexture, NULL); |
| |
| if (result == D3DERR_OUTOFVIDEOMEMORY || result == E_OUTOFMEMORY) |
| { |
| return error(GL_OUT_OF_MEMORY); |
| } |
| |
| ASSERT(SUCCEEDED(result)); |
| |
| for (int face = 0; face < 6; face++) |
| { |
| for (int level = 0; level < MAX_TEXTURE_LEVELS; level++) |
| { |
| D3DLOCKED_RECT lock = {0}; |
| lockableTexture->LockRect((D3DCUBEMAP_FACES)face, level, &lock, NULL, 0); |
| |
| copyImage(lock, format, mImageArray[face][level]); |
| |
| lockableTexture->UnlockRect((D3DCUBEMAP_FACES)face, level); |
| } |
| } |
| |
| device->UpdateTexture(lockableTexture, mTexture); |
| lockableTexture->Release(); |
| } |
| |
| void TextureCubeMap::setImage(int face, GLint level, GLenum internalFormat, GLsizei width, GLsizei height, GLenum format, GLenum type, const void *pixels) |
| { |
| Texture::setImage(width, height, format, type, pixels, &mImageArray[face][level]); |
| |
| if (face == 0 && level == 0) |
| { |
| mWidth = width; |
| mHeight = height; |
| } |
| } |
| |
| unsigned int TextureCubeMap::faceIndex(GLenum face) |
| { |
| META_ASSERT(GL_TEXTURE_CUBE_MAP_NEGATIVE_X - GL_TEXTURE_CUBE_MAP_POSITIVE_X == 1); |
| META_ASSERT(GL_TEXTURE_CUBE_MAP_POSITIVE_Y - GL_TEXTURE_CUBE_MAP_POSITIVE_X == 2); |
| META_ASSERT(GL_TEXTURE_CUBE_MAP_NEGATIVE_Y - GL_TEXTURE_CUBE_MAP_POSITIVE_X == 3); |
| META_ASSERT(GL_TEXTURE_CUBE_MAP_POSITIVE_Z - GL_TEXTURE_CUBE_MAP_POSITIVE_X == 4); |
| META_ASSERT(GL_TEXTURE_CUBE_MAP_NEGATIVE_Z - GL_TEXTURE_CUBE_MAP_POSITIVE_X == 5); |
| |
| return face - GL_TEXTURE_CUBE_MAP_POSITIVE_X; |
| } |
| |
| } |