From 5efb0a5e19b75137b7294b27f4e7878aeb8f0927 Mon Sep 17 00:00:00 2001 From: marha Date: Mon, 12 Dec 2011 12:23:04 +0100 Subject: libxtrans libX11 libxcb xserver mesa git update 12 dec 2011 --- mesalib/src/mesa/main/image.c | 104 ++++++++++++++++++++++++++++-------------- 1 file changed, 69 insertions(+), 35 deletions(-) (limited to 'mesalib/src/mesa/main/image.c') diff --git a/mesalib/src/mesa/main/image.c b/mesalib/src/mesa/main/image.c index b266e26c6..b37cd7e7d 100644 --- a/mesalib/src/mesa/main/image.c +++ b/mesalib/src/mesa/main/image.c @@ -238,6 +238,7 @@ _mesa_components_in_format( GLenum format ) case GL_DEPTH_STENCIL_EXT: case GL_DUDV_ATI: case GL_DU8DV8_ATI: + case GL_RG_INTEGER: return 2; case GL_RGB: @@ -527,6 +528,7 @@ _mesa_is_legal_format_and_type(const struct gl_context *ctx, case GL_GREEN_INTEGER_EXT: case GL_BLUE_INTEGER_EXT: case GL_ALPHA_INTEGER_EXT: + case GL_RG_INTEGER: switch (type) { case GL_BYTE: case GL_UNSIGNED_BYTE: @@ -751,6 +753,7 @@ _mesa_is_color_format(GLenum format) case GL_RGBA_INTEGER_EXT: case GL_BGR_INTEGER_EXT: case GL_BGRA_INTEGER_EXT: + case GL_RG_INTEGER: case GL_LUMINANCE_INTEGER_EXT: case GL_LUMINANCE_ALPHA_INTEGER_EXT: /* sized integer formats */ @@ -954,6 +957,7 @@ _mesa_is_integer_format(GLenum format) case GL_BGRA_INTEGER_EXT: case GL_LUMINANCE_INTEGER_EXT: case GL_LUMINANCE_ALPHA_INTEGER_EXT: + case GL_RG_INTEGER: /* specific integer formats */ case GL_RGBA32UI_EXT: case GL_RGB32UI_EXT: @@ -1160,32 +1164,30 @@ _mesa_base_format_has_channel(GLenum base_format, GLenum pname) /** - * Return the address of a specific pixel in an image (1D, 2D or 3D). + * Return the byte offset of a specific pixel in an image (1D, 2D or 3D). * * Pixel unpacking/packing parameters are observed according to \p packing. * * \param dimensions either 1, 2 or 3 to indicate dimensionality of image - * \param image starting address of image data - * \param width the image width - * \param height theimage height - * \param format the pixel format - * \param type the pixel data type * \param packing the pixelstore attributes + * \param width the image width + * \param height the image height + * \param format the pixel format (must be validated beforehand) + * \param type the pixel data type (must be validated beforehand) * \param img which image in the volume (0 for 1D or 2D images) * \param row row of pixel in the image (0 for 1D images) * \param column column of pixel in the image - * - * \return address of pixel on success, or NULL on error. + * + * \return offset of pixel. * * \sa gl_pixelstore_attrib. */ -GLvoid * -_mesa_image_address( GLuint dimensions, - const struct gl_pixelstore_attrib *packing, - const GLvoid *image, - GLsizei width, GLsizei height, - GLenum format, GLenum type, - GLint img, GLint row, GLint column ) +GLintptr +_mesa_image_offset( GLuint dimensions, + const struct gl_pixelstore_attrib *packing, + GLsizei width, GLsizei height, + GLenum format, GLenum type, + GLint img, GLint row, GLint column ) { GLint alignment; /* 1, 2 or 4 */ GLint pixels_per_row; @@ -1193,7 +1195,7 @@ _mesa_image_address( GLuint dimensions, GLint skiprows; GLint skippixels; GLint skipimages; /* for 3-D volume images */ - GLubyte *pixel_addr; + GLintptr offset; ASSERT(dimensions >= 1 && dimensions <= 3); @@ -1219,30 +1221,20 @@ _mesa_image_address( GLuint dimensions, if (type == GL_BITMAP) { /* BITMAP data */ - GLint comp_per_pixel; /* components per pixel */ - GLint bytes_per_comp; /* bytes per component */ GLint bytes_per_row; GLint bytes_per_image; + /* components per pixel for color or stencil index: */ + const GLint comp_per_pixel = 1; - /* Compute bytes per component */ - bytes_per_comp = _mesa_sizeof_packed_type( type ); - if (bytes_per_comp < 0) { - return NULL; - } - - /* Compute number of components per pixel */ - comp_per_pixel = _mesa_components_in_format( format ); - if (comp_per_pixel < 0) { - return NULL; - } + /* The pixel type and format should have been error checked earlier */ + assert(format == GL_COLOR_INDEX || format == GL_STENCIL_INDEX); bytes_per_row = alignment * CEILING( comp_per_pixel*pixels_per_row, 8*alignment ); bytes_per_image = bytes_per_row * rows_per_image; - pixel_addr = (GLubyte *) image - + (skipimages + img) * bytes_per_image + offset = (skipimages + img) * bytes_per_image + (skiprows + row) * bytes_per_row + (skippixels + column) / 8; } @@ -1275,14 +1267,50 @@ _mesa_image_address( GLuint dimensions, } /* compute final pixel address */ - pixel_addr = (GLubyte *) image - + (skipimages + img) * bytes_per_image + offset = (skipimages + img) * bytes_per_image + topOfImage + (skiprows + row) * bytes_per_row + (skippixels + column) * bytes_per_pixel; } - return (GLvoid *) pixel_addr; + return offset; +} + + +/** + * Return the address of a specific pixel in an image (1D, 2D or 3D). + * + * Pixel unpacking/packing parameters are observed according to \p packing. + * + * \param dimensions either 1, 2 or 3 to indicate dimensionality of image + * \param packing the pixelstore attributes + * \param image starting address of image data + * \param width the image width + * \param height the image height + * \param format the pixel format (must be validated beforehand) + * \param type the pixel data type (must be validated beforehand) + * \param img which image in the volume (0 for 1D or 2D images) + * \param row row of pixel in the image (0 for 1D images) + * \param column column of pixel in the image + * + * \return address of pixel. + * + * \sa gl_pixelstore_attrib. + */ +GLvoid * +_mesa_image_address( GLuint dimensions, + const struct gl_pixelstore_attrib *packing, + const GLvoid *image, + GLsizei width, GLsizei height, + GLenum format, GLenum type, + GLint img, GLint row, GLint column ) +{ + const GLubyte *addr = (const GLubyte *) image; + + addr += _mesa_image_offset(dimensions, packing, width, height, + format, type, img, row, column); + + return (GLvoid *) addr; } @@ -1520,9 +1548,13 @@ _mesa_convert_colors(GLenum srcType, const GLvoid *src, GLenum dstType, GLvoid *dst, GLuint count, const GLubyte mask[]) { - GLuint tempBuffer[MAX_WIDTH][4]; + GLuint *tempBuffer; const GLboolean useTemp = (src == dst); + tempBuffer = malloc(count * MAX_PIXEL_BYTES); + if (!tempBuffer) + return; + ASSERT(srcType != dstType); switch (srcType) { @@ -1624,6 +1656,8 @@ _mesa_convert_colors(GLenum srcType, const GLvoid *src, default: _mesa_problem(NULL, "Invalid datatype in _mesa_convert_colors"); } + + free(tempBuffer); } -- cgit v1.2.3