| #include "GLESTextureUtils.h" |
| |
| #include "glUtils.h" |
| |
| #if PLATFORM_SDK_VERSION < 26 |
| #include <cutils/log.h> |
| #else |
| #include <log/log.h> |
| #endif |
| |
| namespace GLESTextureUtils { |
| |
| // Based on computations in |
| // https://swiftshader.googlesource.com/SwiftShader/+/master/src/OpenGL/common/Image.cpp |
| // such as Image::loadImageData, |
| // ComputePitch/ComputePackingOffset |
| |
| #define HIGHEST_MULTIPLE_OF(align, x) \ |
| (( ( x ) + ( align ) - 1) & ~( ( align ) - 1)) \ |
| |
| static int computePixelSize(GLenum format, GLenum type) { |
| |
| #define FORMAT_ERROR(format, type) \ |
| ALOGE("%s:%d unknown format/type 0x%x 0x%x", __FUNCTION__, __LINE__, format, type) \ |
| |
| switch(type) { |
| case GL_BYTE: |
| switch(format) { |
| case GL_R8: |
| case GL_R8I: |
| case GL_R8_SNORM: |
| case GL_RED: return sizeof(char); |
| case GL_RED_INTEGER: return sizeof(char); |
| case GL_RG8: |
| case GL_RG8I: |
| case GL_RG8_SNORM: |
| case GL_RG: return sizeof(char) * 2; |
| case GL_RG_INTEGER: return sizeof(char) * 2; |
| case GL_RGB8: |
| case GL_RGB8I: |
| case GL_RGB8_SNORM: |
| case GL_RGB: return sizeof(char) * 3; |
| case GL_RGB_INTEGER: return sizeof(char) * 3; |
| case GL_RGBA8: |
| case GL_RGBA8I: |
| case GL_RGBA8_SNORM: |
| case GL_RGBA: return sizeof(char) * 4; |
| case GL_RGBA_INTEGER: return sizeof(char) * 4; |
| default: FORMAT_ERROR(format, type); |
| } |
| break; |
| case GL_UNSIGNED_BYTE: |
| switch(format) { |
| case GL_R8: |
| case GL_R8UI: |
| case GL_RED: return sizeof(unsigned char); |
| case GL_RED_INTEGER: return sizeof(unsigned char); |
| case GL_ALPHA8_EXT: |
| case GL_ALPHA: return sizeof(unsigned char); |
| case GL_LUMINANCE8_EXT: |
| case GL_LUMINANCE: return sizeof(unsigned char); |
| case GL_LUMINANCE8_ALPHA8_EXT: |
| case GL_LUMINANCE_ALPHA: return sizeof(unsigned char) * 2; |
| case GL_RG8: |
| case GL_RG8UI: |
| case GL_RG: return sizeof(unsigned char) * 2; |
| case GL_RG_INTEGER: return sizeof(unsigned char) * 2; |
| case GL_RGB8: |
| case GL_RGB8UI: |
| case GL_SRGB8: |
| case GL_RGB: return sizeof(unsigned char) * 3; |
| case GL_RGB_INTEGER: return sizeof(unsigned char) * 3; |
| case GL_RGBA8: |
| case GL_RGBA8UI: |
| case GL_SRGB8_ALPHA8: |
| case GL_RGBA: return sizeof(unsigned char) * 4; |
| case GL_RGBA_INTEGER: return sizeof(unsigned char) * 4; |
| case GL_BGRA_EXT: |
| case GL_BGRA8_EXT: return sizeof(unsigned char)* 4; |
| default: FORMAT_ERROR(format, type); |
| } |
| break; |
| case GL_SHORT: |
| switch(format) { |
| case GL_R16I: |
| case GL_RED_INTEGER: return sizeof(short); |
| case GL_RG16I: |
| case GL_RG_INTEGER: return sizeof(short) * 2; |
| case GL_RGB16I: |
| case GL_RGB_INTEGER: return sizeof(short) * 3; |
| case GL_RGBA16I: |
| case GL_RGBA_INTEGER: return sizeof(short) * 4; |
| default: FORMAT_ERROR(format, type); |
| } |
| break; |
| case GL_UNSIGNED_SHORT: |
| switch(format) { |
| case GL_DEPTH_COMPONENT16: |
| case GL_DEPTH_COMPONENT: return sizeof(unsigned short); |
| case GL_R16UI: |
| case GL_RED_INTEGER: return sizeof(unsigned short); |
| case GL_RG16UI: |
| case GL_RG_INTEGER: return sizeof(unsigned short) * 2; |
| case GL_RGB16UI: |
| case GL_RGB_INTEGER: return sizeof(unsigned short) * 3; |
| case GL_RGBA16UI: |
| case GL_RGBA_INTEGER: return sizeof(unsigned short) * 4; |
| default: FORMAT_ERROR(format, type); |
| } |
| break; |
| case GL_INT: |
| switch(format) { |
| case GL_R32I: |
| case GL_RED_INTEGER: return sizeof(int); |
| case GL_RG32I: |
| case GL_RG_INTEGER: return sizeof(int) * 2; |
| case GL_RGB32I: |
| case GL_RGB_INTEGER: return sizeof(int) * 3; |
| case GL_RGBA32I: |
| case GL_RGBA_INTEGER: return sizeof(int) * 4; |
| default: FORMAT_ERROR(format, type); |
| } |
| break; |
| case GL_UNSIGNED_INT: |
| switch(format) { |
| case GL_DEPTH_COMPONENT16: |
| case GL_DEPTH_COMPONENT24: |
| case GL_DEPTH_COMPONENT32_OES: |
| case GL_DEPTH_COMPONENT: return sizeof(unsigned int); |
| case GL_R32UI: |
| case GL_RED_INTEGER: return sizeof(unsigned int); |
| case GL_RG32UI: |
| case GL_RG_INTEGER: return sizeof(unsigned int) * 2; |
| case GL_RGB32UI: |
| case GL_RGB_INTEGER: return sizeof(unsigned int) * 3; |
| case GL_RGBA32UI: |
| case GL_RGBA_INTEGER: return sizeof(unsigned int) * 4; |
| default: FORMAT_ERROR(format, type); |
| } |
| break; |
| case GL_UNSIGNED_SHORT_4_4_4_4: |
| case GL_UNSIGNED_SHORT_5_5_5_1: |
| case GL_UNSIGNED_SHORT_5_6_5: |
| case GL_UNSIGNED_SHORT_4_4_4_4_REV_EXT: |
| case GL_UNSIGNED_SHORT_1_5_5_5_REV_EXT: |
| return sizeof(unsigned short); |
| case GL_UNSIGNED_INT_10F_11F_11F_REV: |
| case GL_UNSIGNED_INT_5_9_9_9_REV: |
| case GL_UNSIGNED_INT_2_10_10_10_REV: |
| case GL_UNSIGNED_INT_24_8_OES: |
| return sizeof(unsigned int); |
| case GL_FLOAT_32_UNSIGNED_INT_24_8_REV: |
| return sizeof(float) + sizeof(unsigned int); |
| case GL_FLOAT: |
| switch(format) { |
| case GL_DEPTH_COMPONENT32F: |
| case GL_DEPTH_COMPONENT: return sizeof(float); |
| case GL_ALPHA32F_EXT: |
| case GL_ALPHA: return sizeof(float); |
| case GL_LUMINANCE32F_EXT: |
| case GL_LUMINANCE: return sizeof(float); |
| case GL_LUMINANCE_ALPHA32F_EXT: |
| case GL_LUMINANCE_ALPHA: return sizeof(float) * 2; |
| case GL_RED: return sizeof(float); |
| case GL_R32F: return sizeof(float); |
| case GL_RG: return sizeof(float) * 2; |
| case GL_RG32F: return sizeof(float) * 2; |
| case GL_RGB: return sizeof(float) * 3; |
| case GL_RGB32F: return sizeof(float) * 3; |
| case GL_RGBA: return sizeof(float) * 4; |
| case GL_RGBA32F: return sizeof(float) * 4; |
| default: FORMAT_ERROR(format, type); |
| } |
| break; |
| case GL_HALF_FLOAT: |
| case GL_HALF_FLOAT_OES: |
| switch(format) { |
| case GL_ALPHA16F_EXT: |
| case GL_ALPHA: return sizeof(unsigned short); |
| case GL_LUMINANCE16F_EXT: |
| case GL_LUMINANCE: return sizeof(unsigned short); |
| case GL_LUMINANCE_ALPHA16F_EXT: |
| case GL_LUMINANCE_ALPHA: return sizeof(unsigned short) * 2; |
| case GL_RED: return sizeof(unsigned short); |
| case GL_R16F: return sizeof(unsigned short); |
| case GL_RG: return sizeof(unsigned short) * 2; |
| case GL_RG16F: return sizeof(unsigned short) * 2; |
| case GL_RGB: return sizeof(unsigned short) * 3; |
| case GL_RGB16F: return sizeof(unsigned short) * 3; |
| case GL_RGBA: return sizeof(unsigned short) * 4; |
| case GL_RGBA16F: return sizeof(unsigned short) * 4; |
| default: FORMAT_ERROR(format, type); |
| } |
| break; |
| default: FORMAT_ERROR(format, type); |
| } |
| |
| return 0; |
| } |
| |
| static int computePitch(GLsizei inputWidth, GLenum format, GLenum type, int align) { |
| GLsizei unaligned_width = computePixelSize(format, type) * inputWidth; |
| return HIGHEST_MULTIPLE_OF(align, unaligned_width); |
| } |
| |
| static int computePackingOffset(GLenum format, GLenum type, GLsizei width, GLsizei height, int align, int skipPixels, int skipRows, int skipImages) { |
| GLsizei alignedPitch = computePitch(width, format, type, align); |
| int packingOffsetRows = |
| (skipImages * height + skipRows); |
| int res = packingOffsetRows * alignedPitch + skipPixels * computePixelSize(format, type); |
| |
| return res; |
| } |
| |
| void computeTextureStartEnd( |
| GLsizei width, GLsizei height, GLsizei depth, |
| GLenum format, GLenum type, |
| int unpackAlignment, |
| int unpackRowLength, |
| int unpackImageHeight, |
| int unpackSkipPixels, |
| int unpackSkipRows, |
| int unpackSkipImages, |
| int* start, |
| int* end) { |
| |
| GLsizei inputWidth = (unpackRowLength == 0) ? width : unpackRowLength; |
| GLsizei inputPitch = computePitch(inputWidth, format, type, unpackAlignment); |
| GLsizei inputHeight = (unpackImageHeight == 0) ? height : unpackImageHeight; |
| |
| ALOGV("%s: input idim %d %d %d w p h %d %d %d:", __FUNCTION__, width, height, depth, inputWidth, inputPitch, inputHeight); |
| |
| int startVal = computePackingOffset(format, type, inputWidth, inputHeight, unpackAlignment, unpackSkipPixels, unpackSkipRows, unpackSkipImages); |
| int endVal = startVal + inputPitch * inputHeight * depth; |
| |
| if (start) *start = startVal; |
| if (end) *end = endVal; |
| |
| ALOGV("%s: start/end: %d %d", __FUNCTION__, *start, *end); |
| |
| } |
| |
| int computeTotalImageSize( |
| GLsizei width, GLsizei height, GLsizei depth, |
| GLenum format, GLenum type, |
| int unpackAlignment, |
| int unpackRowLength, |
| int unpackImageHeight, |
| int unpackSkipPixels, |
| int unpackSkipRows, |
| int unpackSkipImages) { |
| |
| int start, end; |
| computeTextureStartEnd( |
| width, height, depth, |
| format, type, |
| unpackAlignment, |
| unpackRowLength, |
| unpackImageHeight, |
| unpackSkipPixels, |
| unpackSkipRows, |
| unpackSkipImages, |
| &start, |
| &end); |
| return end; |
| } |
| |
| int computeNeededBufferSize( |
| GLsizei width, GLsizei height, GLsizei depth, |
| GLenum format, GLenum type, |
| int unpackAlignment, |
| int unpackRowLength, |
| int unpackImageHeight, |
| int unpackSkipPixels, |
| int unpackSkipRows, |
| int unpackSkipImages) { |
| |
| int start, end; |
| computeTextureStartEnd( |
| width, height, depth, |
| format, type, |
| unpackAlignment, |
| unpackRowLength, |
| unpackImageHeight, |
| unpackSkipPixels, |
| unpackSkipRows, |
| unpackSkipImages, |
| &start, |
| &end); |
| return end - start; |
| } |
| |
| void computePackingOffsets2D( |
| GLsizei width, GLsizei height, |
| GLenum format, GLenum type, |
| int packAlignment, |
| int packRowLength, |
| int packSkipPixels, |
| int packSkipRows, |
| int* bpp, |
| int* startOffset, |
| int* packingPixelRowSize, |
| int* packingTotalRowSize) { |
| |
| int widthTotal = (packRowLength == 0) ? width : packRowLength; |
| int totalRowSize = computePitch(widthTotal, format, type, packAlignment); |
| int pixelsOnlyRowSize = computePitch(width, format, type, packAlignment); |
| |
| int packingOffsetStart = |
| computePackingOffset( |
| format, type, widthTotal, height, packAlignment, packSkipPixels, packSkipRows, 0 /* skip images = 0 */); |
| |
| if (bpp) *bpp = computePixelSize(format, type); |
| if (startOffset) *startOffset = packingOffsetStart; |
| if (packingPixelRowSize) *packingPixelRowSize = pixelsOnlyRowSize; |
| if (packingTotalRowSize) *packingTotalRowSize = totalRowSize; |
| } |
| |
| void computePackingOffsets3D( |
| GLsizei width, GLsizei height, GLsizei depth, |
| GLenum format, GLenum type, |
| int packAlignment, |
| int packRowLength, |
| int packImageHeight, |
| int packSkipPixels, |
| int packSkipRows, |
| int packSkipImages, |
| int* bpp, |
| int* startOffset, |
| int* packingPixelRowSize, |
| int* packingTotalRowSize, |
| int* packingPixelImageSize, |
| int* packingTotalImageSize) { |
| |
| int widthTotal = (packRowLength == 0) ? width : packRowLength; |
| int totalRowSize = computePitch(widthTotal, format, type, packAlignment); |
| int pixelsOnlyRowSize = computePitch(width, format, type, packAlignment); |
| |
| int heightTotal = packImageHeight == 0 ? height : packImageHeight; |
| int totalImageSize = totalRowSize * heightTotal; |
| int pixelsOnlyImageSize = totalRowSize * height; |
| |
| int packingOffsetStart = |
| computePackingOffset( |
| format, type, widthTotal, heightTotal, packAlignment, packSkipPixels, packSkipRows, packSkipImages); |
| |
| if (bpp) *bpp = computePixelSize(format, type); |
| if (startOffset) *startOffset = packingOffsetStart; |
| if (packingPixelRowSize) *packingPixelRowSize = pixelsOnlyRowSize; |
| if (packingTotalRowSize) *packingTotalRowSize = totalRowSize; |
| if (packingPixelImageSize) *packingPixelImageSize = pixelsOnlyImageSize; |
| if (packingTotalImageSize) *packingTotalImageSize = totalImageSize; |
| } |
| |
| } // namespace GLESTextureUtils |
