From 0299ad753224372c7a6147f598fdad33f576a714 Mon Sep 17 00:00:00 2001 From: Brian Paul Date: Wed, 21 Mar 2001 16:44:08 +0000 Subject: renamed some vars, added a bunch of comments --- src/mesa/main/texstore.c | 22 ++++++++--------- src/mesa/main/texstore.h | 4 ++-- src/mesa/main/texutil.c | 48 +++++++++++++++++++++++++++++-------- src/mesa/main/texutil_tmp.h | 58 ++++++++++++++++++++++----------------------- 4 files changed, 80 insertions(+), 52 deletions(-) (limited to 'src') diff --git a/src/mesa/main/texstore.c b/src/mesa/main/texstore.c index 6ae40c9e80..3c4a08371c 100644 --- a/src/mesa/main/texstore.c +++ b/src/mesa/main/texstore.c @@ -1,4 +1,4 @@ -/* $Id: texstore.c,v 1.17 2001/03/21 01:08:37 brianp Exp $ */ +/* $Id: texstore.c,v 1.18 2001/03/21 16:44:08 brianp Exp $ */ /* * Mesa 3-D graphics library @@ -156,7 +156,7 @@ components_in_intformat( GLint format ) */ void _mesa_transfer_teximage(GLcontext *ctx, GLuint dimensions, - GLenum texFormat, GLvoid *texDestAddr, + GLenum texDestFormat, GLvoid *texDestAddr, GLint srcWidth, GLint srcHeight, GLint srcDepth, GLint dstXoffset, GLint dstYoffset, GLint dstZoffset, GLint dstRowStride, GLint dstImageStride, @@ -180,12 +180,12 @@ _mesa_transfer_teximage(GLcontext *ctx, GLuint dimensions, ASSERT(srcAddr); ASSERT(srcPacking); - texComponents = components_in_intformat(texFormat); + texComponents = components_in_intformat(texDestFormat); /* try common 2D texture cases first */ if (!ctx->_ImageTransferState && dimensions == 2 && srcType == CHAN_TYPE) { - if (srcFormat == texFormat) { + if (srcFormat == texDestFormat) { /* This will cover the common GL_RGB, GL_RGBA, GL_ALPHA, * GL_LUMINANCE_ALPHA, etc. texture formats. Use memcpy(). */ @@ -210,7 +210,7 @@ _mesa_transfer_teximage(GLcontext *ctx, GLuint dimensions, } return; /* all done */ } - else if (srcFormat == GL_RGBA && texFormat == GL_RGB) { + else if (srcFormat == GL_RGBA && texDestFormat == GL_RGB) { /* commonly used by Quake */ const GLchan *src = (const GLchan *) _mesa_image_address( srcPacking, srcAddr, srcWidth, srcHeight, @@ -239,7 +239,7 @@ _mesa_transfer_teximage(GLcontext *ctx, GLuint dimensions, /* * General case solutions */ - if (texFormat == GL_COLOR_INDEX) { + if (texDestFormat == GL_COLOR_INDEX) { /* color index texture */ const GLenum texType = CHAN_TYPE; GLint img, row; @@ -259,7 +259,7 @@ _mesa_transfer_teximage(GLcontext *ctx, GLuint dimensions, dest += dstImageStride; } } - else if (texFormat == GL_DEPTH_COMPONENT) { + else if (texDestFormat == GL_DEPTH_COMPONENT) { /* Depth texture (shadow maps) */ GLint img, row; GLubyte *dest = (GLubyte *) texDestAddr @@ -342,7 +342,7 @@ _mesa_transfer_teximage(GLcontext *ctx, GLuint dimensions, for (row = 0; row < convHeight; row++) { _mesa_pack_float_rgba_span(ctx, convWidth, (const GLfloat (*)[4]) srcf, - texFormat, CHAN_TYPE, + texDestFormat, CHAN_TYPE, dest, &_mesa_native_packing, ctx->_ImageTransferState & IMAGE_POST_CONVOLUTION_BITS); @@ -368,9 +368,9 @@ _mesa_transfer_teximage(GLcontext *ctx, GLuint dimensions, const GLvoid *srcRow = _mesa_image_address(srcPacking, srcAddr, srcWidth, srcHeight, srcFormat, srcType, img, row, 0); - _mesa_unpack_chan_color_span(ctx, srcWidth, texFormat, destRow, - srcFormat, srcType, srcRow, srcPacking, - ctx->_ImageTransferState); + _mesa_unpack_chan_color_span(ctx, srcWidth, texDestFormat, + destRow, srcFormat, srcType, srcRow, + srcPacking, ctx->_ImageTransferState); destRow += dstRowStride; } dest += dstImageStride; diff --git a/src/mesa/main/texstore.h b/src/mesa/main/texstore.h index 585d44efe9..c78a32703c 100644 --- a/src/mesa/main/texstore.h +++ b/src/mesa/main/texstore.h @@ -1,4 +1,4 @@ -/* $Id: texstore.h,v 1.4 2001/03/21 01:08:37 brianp Exp $ */ +/* $Id: texstore.h,v 1.5 2001/03/21 16:44:08 brianp Exp $ */ /* * Mesa 3-D graphics library @@ -39,7 +39,7 @@ extern void _mesa_transfer_teximage(GLcontext *ctx, GLuint dimensions, - GLenum texFormat, GLvoid *texDestAddr, + GLenum texDestFormat, GLvoid *texDestAddr, GLint srcWidth, GLint srcHeight, GLint srcDepth, GLint dstXoffset, GLint dstYoffset, GLint dstZoffset, GLint dstRowStride, GLint dstImageStride, diff --git a/src/mesa/main/texutil.c b/src/mesa/main/texutil.c index 217f1e2d6b..033b17912b 100644 --- a/src/mesa/main/texutil.c +++ b/src/mesa/main/texutil.c @@ -1,4 +1,4 @@ -/* $Id: texutil.c,v 1.16 2001/03/18 13:40:58 gareth Exp $ */ +/* $Id: texutil.c,v 1.17 2001/03/21 16:44:08 brianp Exp $ */ /* * Mesa 3-D graphics library @@ -48,8 +48,9 @@ struct gl_texture_convert { GLint xoffset, yoffset, zoffset; /* Subimage offset */ GLint width, height, depth; /* Subimage region */ - GLint imageWidth, imageHeight; /* Full image dimensions */ - GLenum format, type; + GLint dstImageWidth, dstImageHeight; /* Dest image size */ + /* Needed for subimage replacement */ + GLenum format, type; /* Source (user) format and type */ const struct gl_pixelstore_attrib *packing; @@ -701,11 +702,38 @@ _mesa_convert_texsubimage1d( GLint mesaFormat, return gl_convert_texsubimage2d_tab[mesaFormat]( &convert ); } + +/* + * Convert a user's 2D image into a texture image. This basically repacks + * pixel data into the special texture formats used by core Mesa and the DRI + * drivers. This function can do full images or subimages. + * + * We return a boolean because this function may not accept some kinds of + * source image formats and/or types. For example, if the incoming + * format/type = GL_BGR, GL_UNSIGNED_INT this function probably won't + * be able to do the conversion. + * + * In that case, the incoming image should first be simplified to one of + * the "canonical" formats (GL_ALPHA, GL_LUMINANCE, GL_LUMINANCE_ALPHA, + * GL_INTENSITY, GL_RGB, GL_RGBA) and types (GL_CHAN). We can do that + * with the _mesa_transfer_teximage() function. That function will also + * do image transfer operations such as scale/bias and convolution. + * + * Input: + * mesaFormat - one of the MESA_FORMAT_* values from texformat.h + * xoffset, yoffset - position in dest image to put data + * width, height - incoming image size, also size of dest region. + * dstImageWidth - width (row stride) of dest image in pixels + * format, type - incoming image format and type + * packing - describes incoming image packing + * srcImage - pointer to source image + * destImage - pointer to dest image + */ GLboolean _mesa_convert_texsubimage2d( GLint mesaFormat, GLint xoffset, GLint yoffset, GLint width, GLint height, - GLint imageWidth, + GLint destImageWidth, GLenum format, GLenum type, const struct gl_pixelstore_attrib *packing, const GLvoid *srcImage, GLvoid *dstImage ) @@ -725,7 +753,7 @@ _mesa_convert_texsubimage2d( GLint mesaFormat, convert.yoffset = yoffset; convert.width = width; convert.height = height; - convert.imageWidth = imageWidth; + convert.dstImageWidth = destImageWidth; convert.format = format; convert.type = type; convert.packing = packing; @@ -737,7 +765,7 @@ _mesa_convert_texsubimage2d( GLint mesaFormat, if ( convert_needs_packing( packing, format, type ) ) convert.index |= CONVERT_PACKING_BIT; - if ( width != imageWidth ) + if ( width != destImageWidth ) convert.index |= CONVERT_STRIDE_BIT; return gl_convert_texsubimage2d_tab[mesaFormat]( &convert ); @@ -747,7 +775,7 @@ GLboolean _mesa_convert_texsubimage3d( GLint mesaFormat, GLint xoffset, GLint yoffset, GLint zoffset, GLint width, GLint height, GLint depth, - GLint imageWidth, GLint imageHeight, + GLint dstImageWidth, GLint dstImageHeight, GLenum format, GLenum type, const struct gl_pixelstore_attrib *packing, const GLvoid *srcImage, GLvoid *dstImage ) @@ -769,8 +797,8 @@ _mesa_convert_texsubimage3d( GLint mesaFormat, convert.width = width; convert.height = height; convert.depth = depth; - convert.imageWidth = imageWidth; - convert.imageHeight = imageHeight; + convert.dstImageWidth = dstImageWidth; + convert.dstImageHeight = dstImageHeight; convert.format = format; convert.type = type; convert.packing = packing; @@ -782,7 +810,7 @@ _mesa_convert_texsubimage3d( GLint mesaFormat, if ( convert_needs_packing( packing, format, type ) ) convert.index |= CONVERT_PACKING_BIT; - if ( width != imageWidth || height != imageHeight ) + if ( width != dstImageWidth || height != dstImageHeight ) convert.index |= CONVERT_STRIDE_BIT; return gl_convert_texsubimage3d_tab[mesaFormat]( &convert ); diff --git a/src/mesa/main/texutil_tmp.h b/src/mesa/main/texutil_tmp.h index 6a1f002fc8..4d55e86414 100644 --- a/src/mesa/main/texutil_tmp.h +++ b/src/mesa/main/texutil_tmp.h @@ -1,4 +1,4 @@ -/* $Id: texutil_tmp.h,v 1.4 2001/03/20 10:18:13 joukj Exp $ */ +/* $Id: texutil_tmp.h,v 1.5 2001/03/21 16:44:08 brianp Exp $ */ /* * Mesa 3-D graphics library @@ -37,20 +37,20 @@ #define DST_TEXEL_BYTES (4 / DST_TEXELS_PER_DWORD) #define DST_ROW_WIDTH (convert->width * DST_TEXEL_BYTES) -#define DST_ROW_STRIDE (convert->imageWidth * DST_TEXEL_BYTES) -#define DST_IMG_STRIDE (convert->imageWidth * \ - convert->imageHeight * DST_TEXEL_BYTES) +#define DST_ROW_STRIDE (convert->dstImageWidth * DST_TEXEL_BYTES) +#define DST_IMG_STRIDE (convert->dstImageWidth * \ + convert->dstImageHeight * DST_TEXEL_BYTES) /* ================================================================ - * PRE: No pixelstore attribs, width == imageWidth. + * PRE: No pixelstore attribs, width == dstImageWidth. */ static GLboolean TAG(texsubimage2d)( struct gl_texture_convert *convert ) { const GLubyte *src = (const GLubyte *)convert->srcImage; GLuint *dst = (GLuint *)((GLubyte *)convert->dstImage + - (convert->yoffset * convert->imageWidth + + (convert->yoffset * convert->dstImageWidth + convert->xoffset) * DST_TEXEL_BYTES); GLint dwords, i; (void) dwords; (void) i; @@ -73,7 +73,7 @@ TAG(texsubimage2d)( struct gl_texture_convert *convert ) return GL_TRUE; } -/* PRE: As above, height == imageHeight also. +/* PRE: As above, height == dstImageHeight also. */ static GLboolean TAG(texsubimage3d)( struct gl_texture_convert *convert ) @@ -107,25 +107,25 @@ TAG(texsubimage3d)( struct gl_texture_convert *convert ) /* ================================================================ - * PRE: No pixelstore attribs, width != imageWidth. + * PRE: No pixelstore attribs, width != dstImageWidth. */ static GLboolean TAG(texsubimage2d_stride)( struct gl_texture_convert *convert ) { const GLubyte *src = (const GLubyte *)convert->srcImage; DST_TYPE *dst = (DST_TYPE *)((GLubyte *)convert->dstImage + - (convert->yoffset * convert->imageWidth + + (convert->yoffset * convert->dstImageWidth + convert->xoffset) * DST_TEXEL_BYTES); GLint adjust; GLint row, col; - adjust = convert->imageWidth - convert->width; + adjust = convert->dstImageWidth - convert->width; if ( DBG ) { fprintf( stderr, __FUNCTION__ ":\n" ); fprintf( stderr, " x=%d y=%d w=%d h=%d s=%d\n", convert->xoffset, convert->yoffset, convert->width, - convert->height, convert->imageWidth ); + convert->height, convert->dstImageWidth ); fprintf( stderr, " adjust=%d\n", adjust ); } @@ -140,26 +140,26 @@ TAG(texsubimage2d_stride)( struct gl_texture_convert *convert ) return GL_TRUE; } -/* PRE: As above, or height != imageHeight also. +/* PRE: As above, or height != dstImageHeight also. */ static GLboolean TAG(texsubimage3d_stride)( struct gl_texture_convert *convert ) { const GLubyte *src = (const GLubyte *)convert->srcImage; DST_TYPE *dst = (DST_TYPE *)((GLubyte *)convert->dstImage + - ((convert->zoffset * convert->imageHeight + - convert->yoffset) * convert->imageWidth + + ((convert->zoffset * convert->dstImageHeight + + convert->yoffset) * convert->dstImageWidth + convert->xoffset) * DST_TEXEL_BYTES); GLint adjust; GLint row, col, img; - adjust = convert->imageWidth - convert->width; + adjust = convert->dstImageWidth - convert->width; if ( DBG ) { fprintf( stderr, __FUNCTION__ ":\n" ); fprintf( stderr, " x=%d y=%d w=%d h=%d s=%d\n", convert->xoffset, convert->yoffset, convert->width, - convert->height, convert->imageWidth ); + convert->height, convert->dstImageWidth ); fprintf( stderr, " adjust=%d\n", adjust ); } @@ -180,7 +180,7 @@ TAG(texsubimage3d_stride)( struct gl_texture_convert *convert ) /* ================================================================ - * PRE: Require pixelstore attribs, width == imageWidth. + * PRE: Require pixelstore attribs, width == dstImageWidth. */ static GLboolean TAG(texsubimage2d_pack)( struct gl_texture_convert *convert ) @@ -223,7 +223,7 @@ TAG(texsubimage2d_pack)( struct gl_texture_convert *convert ) return GL_TRUE; } -/* PRE: as above, height == imageHeight also. +/* PRE: as above, height == dstImageHeight also. */ static GLboolean TAG(texsubimage3d_pack)( struct gl_texture_convert *convert ) @@ -272,7 +272,7 @@ TAG(texsubimage3d_pack)( struct gl_texture_convert *convert ) /* ================================================================ - * PRE: Require pixelstore attribs, width != imageWidth. + * PRE: Require pixelstore attribs, width != dstImageWidth. */ static GLboolean TAG(texsubimage2d_stride_pack)( struct gl_texture_convert *convert ) @@ -285,19 +285,19 @@ TAG(texsubimage2d_stride_pack)( struct gl_texture_convert *convert ) _mesa_image_row_stride( convert->packing, convert->width, convert->format, convert->type ); DST_TYPE *dst = (DST_TYPE *)((GLubyte *)convert->dstImage + - (convert->yoffset * convert->imageWidth + + (convert->yoffset * convert->dstImageWidth + convert->xoffset) * DST_TEXEL_BYTES); GLint adjust; GLint row, col; (void) col; - adjust = convert->imageWidth - convert->width; + adjust = convert->dstImageWidth - convert->width; if ( DBG ) { fprintf( stderr, __FUNCTION__ ":\n" ); fprintf( stderr, " x=%d y=%d w=%d h=%d s=%d\n", convert->xoffset, convert->yoffset, convert->width, - convert->height, convert->imageWidth ); + convert->height, convert->dstImageWidth ); fprintf( stderr, " adjust=%d\n", adjust ); } @@ -305,7 +305,7 @@ TAG(texsubimage2d_stride_pack)( struct gl_texture_convert *convert ) #ifdef CONVERT_DIRECT MEMCPY( dst, src, DST_ROW_WIDTH ); src += srcRowStride; - dst += convert->imageWidth; + dst += convert->dstImageWidth; #else const GLubyte *srcRow = src; for ( col = 0 ; col < convert->width ; col++ ) { @@ -320,7 +320,7 @@ TAG(texsubimage2d_stride_pack)( struct gl_texture_convert *convert ) return GL_TRUE; } -/* PRE: As above, or height != imageHeight also. +/* PRE: As above, or height != dstImageHeight also. */ static GLboolean TAG(texsubimage3d_stride_pack)( struct gl_texture_convert *convert ) @@ -333,20 +333,20 @@ TAG(texsubimage3d_stride_pack)( struct gl_texture_convert *convert ) _mesa_image_row_stride( convert->packing, convert->width, convert->format, convert->type ); DST_TYPE *dst = (DST_TYPE *)((GLubyte *)convert->dstImage + - ((convert->zoffset * convert->imageHeight + - convert->yoffset) * convert->imageWidth + + ((convert->zoffset * convert->dstImageHeight + + convert->yoffset) * convert->dstImageWidth + convert->xoffset) * DST_TEXEL_BYTES); GLint adjust; GLint row, col, img; (void) col; - adjust = convert->imageWidth - convert->width; + adjust = convert->dstImageWidth - convert->width; if ( DBG ) { fprintf( stderr, __FUNCTION__ ":\n" ); fprintf( stderr, " x=%d y=%d w=%d h=%d s=%d\n", convert->xoffset, convert->yoffset, convert->width, - convert->height, convert->imageWidth ); + convert->height, convert->dstImageWidth ); fprintf( stderr, " adjust=%d\n", adjust ); } @@ -355,7 +355,7 @@ TAG(texsubimage3d_stride_pack)( struct gl_texture_convert *convert ) #ifdef CONVERT_DIRECT MEMCPY( dst, src, DST_ROW_WIDTH ); src += srcRowStride; - dst += convert->imageWidth; + dst += convert->dstImageWidth; #else const GLubyte *srcRow = src; for ( col = 0 ; col < convert->width ; col++ ) { -- cgit v1.2.3