From 807c6931fe683fd844ceec1b023232181e6aae03 Mon Sep 17 00:00:00 2001 From: marha Date: Tue, 28 Dec 2010 16:10:20 +0000 Subject: xserver and mesa git update 28-12-2010 --- mesalib/src/mesa/main/pixel.c | 1570 ++++++++++++++++++----------------------- 1 file changed, 700 insertions(+), 870 deletions(-) (limited to 'mesalib/src/mesa/main/pixel.c') diff --git a/mesalib/src/mesa/main/pixel.c b/mesalib/src/mesa/main/pixel.c index 675e933ca..db1f05a58 100644 --- a/mesalib/src/mesa/main/pixel.c +++ b/mesalib/src/mesa/main/pixel.c @@ -1,870 +1,700 @@ -/* - * Mesa 3-D graphics library - * Version: 7.1 - * - * Copyright (C) 1999-2008 Brian Paul All Rights Reserved. - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included - * in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS - * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN - * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. - */ - - -/** - * \file pixel.c - * Pixel transfer functions (glPixelZoom, glPixelMap, glPixelTransfer) - */ - -#include "glheader.h" -#include "bufferobj.h" -#include "colormac.h" -#include "context.h" -#include "macros.h" -#include "pixel.h" -#include "mtypes.h" -#include "main/dispatch.h" - - -#if FEATURE_pixel_transfer - - -/**********************************************************************/ -/***** glPixelZoom *****/ -/**********************************************************************/ - -static void GLAPIENTRY -_mesa_PixelZoom( GLfloat xfactor, GLfloat yfactor ) -{ - GET_CURRENT_CONTEXT(ctx); - - if (ctx->Pixel.ZoomX == xfactor && - ctx->Pixel.ZoomY == yfactor) - return; - - FLUSH_VERTICES(ctx, _NEW_PIXEL); - ctx->Pixel.ZoomX = xfactor; - ctx->Pixel.ZoomY = yfactor; -} - - - -/**********************************************************************/ -/***** glPixelMap *****/ -/**********************************************************************/ - -/** - * Return pointer to a pixelmap by name. - */ -static struct gl_pixelmap * -get_pixelmap(GLcontext *ctx, GLenum map) -{ - switch (map) { - case GL_PIXEL_MAP_I_TO_I: - return &ctx->PixelMaps.ItoI; - case GL_PIXEL_MAP_S_TO_S: - return &ctx->PixelMaps.StoS; - case GL_PIXEL_MAP_I_TO_R: - return &ctx->PixelMaps.ItoR; - case GL_PIXEL_MAP_I_TO_G: - return &ctx->PixelMaps.ItoG; - case GL_PIXEL_MAP_I_TO_B: - return &ctx->PixelMaps.ItoB; - case GL_PIXEL_MAP_I_TO_A: - return &ctx->PixelMaps.ItoA; - case GL_PIXEL_MAP_R_TO_R: - return &ctx->PixelMaps.RtoR; - case GL_PIXEL_MAP_G_TO_G: - return &ctx->PixelMaps.GtoG; - case GL_PIXEL_MAP_B_TO_B: - return &ctx->PixelMaps.BtoB; - case GL_PIXEL_MAP_A_TO_A: - return &ctx->PixelMaps.AtoA; - default: - return NULL; - } -} - - -/** - * Helper routine used by the other _mesa_PixelMap() functions. - */ -static void -store_pixelmap(GLcontext *ctx, GLenum map, GLsizei mapsize, - const GLfloat *values) -{ - GLint i; - struct gl_pixelmap *pm = get_pixelmap(ctx, map); - if (!pm) { - _mesa_error(ctx, GL_INVALID_ENUM, "glPixelMap(map)"); - return; - } - - switch (map) { - case GL_PIXEL_MAP_S_TO_S: - /* special case */ - ctx->PixelMaps.StoS.Size = mapsize; - for (i = 0; i < mapsize; i++) { - ctx->PixelMaps.StoS.Map[i] = (GLfloat)IROUND(values[i]); - } - break; - case GL_PIXEL_MAP_I_TO_I: - /* special case */ - ctx->PixelMaps.ItoI.Size = mapsize; - for (i = 0; i < mapsize; i++) { - ctx->PixelMaps.ItoI.Map[i] = values[i]; - } - break; - default: - /* general case */ - pm->Size = mapsize; - for (i = 0; i < mapsize; i++) { - GLfloat val = CLAMP(values[i], 0.0F, 1.0F); - pm->Map[i] = val; - pm->Map8[i] = (GLint) (val * 255.0F); - } - } -} - - -/** - * Convenience wrapper for _mesa_validate_pbo_access() for gl[Get]PixelMap(). - */ -static GLboolean -validate_pbo_access(GLcontext *ctx, struct gl_pixelstore_attrib *pack, - GLsizei mapsize, GLenum format, GLenum type, - const GLvoid *ptr) -{ - GLboolean ok; - - /* Note, need to use DefaultPacking and Unpack's buffer object */ - _mesa_reference_buffer_object(ctx, - &ctx->DefaultPacking.BufferObj, - pack->BufferObj); - - ok = _mesa_validate_pbo_access(1, &ctx->DefaultPacking, mapsize, 1, 1, - format, type, ptr); - - /* restore */ - _mesa_reference_buffer_object(ctx, - &ctx->DefaultPacking.BufferObj, - ctx->Shared->NullBufferObj); - - if (!ok) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "glPixelMap(invalid PBO access)"); - } - return ok; -} - - -static void GLAPIENTRY -_mesa_PixelMapfv( GLenum map, GLsizei mapsize, const GLfloat *values ) -{ - GET_CURRENT_CONTEXT(ctx); - ASSERT_OUTSIDE_BEGIN_END(ctx); - - /* XXX someday, test against ctx->Const.MaxPixelMapTableSize */ - if (mapsize < 1 || mapsize > MAX_PIXEL_MAP_TABLE) { - _mesa_error( ctx, GL_INVALID_VALUE, "glPixelMapfv(mapsize)" ); - return; - } - - if (map >= GL_PIXEL_MAP_S_TO_S && map <= GL_PIXEL_MAP_I_TO_A) { - /* test that mapsize is a power of two */ - if (!_mesa_is_pow_two(mapsize)) { - _mesa_error( ctx, GL_INVALID_VALUE, "glPixelMapfv(mapsize)" ); - return; - } - } - - FLUSH_VERTICES(ctx, _NEW_PIXEL); - - if (!validate_pbo_access(ctx, &ctx->Unpack, mapsize, - GL_INTENSITY, GL_FLOAT, values)) { - return; - } - - values = (const GLfloat *) _mesa_map_pbo_source(ctx, &ctx->Unpack, values); - if (!values) { - if (_mesa_is_bufferobj(ctx->Unpack.BufferObj)) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "glPixelMapfv(PBO is mapped)"); - } - return; - } - - store_pixelmap(ctx, map, mapsize, values); - - _mesa_unmap_pbo_source(ctx, &ctx->Unpack); -} - - -static void GLAPIENTRY -_mesa_PixelMapuiv(GLenum map, GLsizei mapsize, const GLuint *values ) -{ - GLfloat fvalues[MAX_PIXEL_MAP_TABLE]; - GET_CURRENT_CONTEXT(ctx); - ASSERT_OUTSIDE_BEGIN_END(ctx); - - if (mapsize < 1 || mapsize > MAX_PIXEL_MAP_TABLE) { - _mesa_error( ctx, GL_INVALID_VALUE, "glPixelMapuiv(mapsize)" ); - return; - } - - if (map >= GL_PIXEL_MAP_S_TO_S && map <= GL_PIXEL_MAP_I_TO_A) { - /* test that mapsize is a power of two */ - if (!_mesa_is_pow_two(mapsize)) { - _mesa_error( ctx, GL_INVALID_VALUE, "glPixelMapuiv(mapsize)" ); - return; - } - } - - FLUSH_VERTICES(ctx, _NEW_PIXEL); - - if (!validate_pbo_access(ctx, &ctx->Unpack, mapsize, - GL_INTENSITY, GL_UNSIGNED_INT, values)) { - return; - } - - values = (const GLuint *) _mesa_map_pbo_source(ctx, &ctx->Unpack, values); - if (!values) { - if (_mesa_is_bufferobj(ctx->Unpack.BufferObj)) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "glPixelMapuiv(PBO is mapped)"); - } - return; - } - - /* convert to floats */ - if (map == GL_PIXEL_MAP_I_TO_I || map == GL_PIXEL_MAP_S_TO_S) { - GLint i; - for (i = 0; i < mapsize; i++) { - fvalues[i] = (GLfloat) values[i]; - } - } - else { - GLint i; - for (i = 0; i < mapsize; i++) { - fvalues[i] = UINT_TO_FLOAT( values[i] ); - } - } - - _mesa_unmap_pbo_source(ctx, &ctx->Unpack); - - store_pixelmap(ctx, map, mapsize, fvalues); -} - - -static void GLAPIENTRY -_mesa_PixelMapusv(GLenum map, GLsizei mapsize, const GLushort *values ) -{ - GLfloat fvalues[MAX_PIXEL_MAP_TABLE]; - GET_CURRENT_CONTEXT(ctx); - ASSERT_OUTSIDE_BEGIN_END(ctx); - - if (mapsize < 1 || mapsize > MAX_PIXEL_MAP_TABLE) { - _mesa_error( ctx, GL_INVALID_VALUE, "glPixelMapusv(mapsize)" ); - return; - } - - if (map >= GL_PIXEL_MAP_S_TO_S && map <= GL_PIXEL_MAP_I_TO_A) { - /* test that mapsize is a power of two */ - if (!_mesa_is_pow_two(mapsize)) { - _mesa_error( ctx, GL_INVALID_VALUE, "glPixelMapuiv(mapsize)" ); - return; - } - } - - FLUSH_VERTICES(ctx, _NEW_PIXEL); - - if (!validate_pbo_access(ctx, &ctx->Unpack, mapsize, - GL_INTENSITY, GL_UNSIGNED_SHORT, values)) { - return; - } - - values = (const GLushort *) _mesa_map_pbo_source(ctx, &ctx->Unpack, values); - if (!values) { - if (_mesa_is_bufferobj(ctx->Unpack.BufferObj)) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "glPixelMapusv(PBO is mapped)"); - } - return; - } - - /* convert to floats */ - if (map == GL_PIXEL_MAP_I_TO_I || map == GL_PIXEL_MAP_S_TO_S) { - GLint i; - for (i = 0; i < mapsize; i++) { - fvalues[i] = (GLfloat) values[i]; - } - } - else { - GLint i; - for (i = 0; i < mapsize; i++) { - fvalues[i] = USHORT_TO_FLOAT( values[i] ); - } - } - - _mesa_unmap_pbo_source(ctx, &ctx->Unpack); - - store_pixelmap(ctx, map, mapsize, fvalues); -} - - -static void GLAPIENTRY -_mesa_GetPixelMapfv( GLenum map, GLfloat *values ) -{ - GET_CURRENT_CONTEXT(ctx); - GLuint mapsize, i; - const struct gl_pixelmap *pm; - - ASSERT_OUTSIDE_BEGIN_END(ctx); - - pm = get_pixelmap(ctx, map); - if (!pm) { - _mesa_error(ctx, GL_INVALID_ENUM, "glGetPixelMapfv(map)"); - return; - } - - mapsize = pm->Size; - - if (!validate_pbo_access(ctx, &ctx->Pack, mapsize, - GL_INTENSITY, GL_FLOAT, values)) { - return; - } - - values = (GLfloat *) _mesa_map_pbo_dest(ctx, &ctx->Pack, values); - if (!values) { - if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "glGetPixelMapfv(PBO is mapped)"); - } - return; - } - - if (map == GL_PIXEL_MAP_S_TO_S) { - /* special case */ - for (i = 0; i < mapsize; i++) { - values[i] = (GLfloat) ctx->PixelMaps.StoS.Map[i]; - } - } - else { - memcpy(values, pm->Map, mapsize * sizeof(GLfloat)); - } - - _mesa_unmap_pbo_dest(ctx, &ctx->Pack); -} - - -static void GLAPIENTRY -_mesa_GetPixelMapuiv( GLenum map, GLuint *values ) -{ - GET_CURRENT_CONTEXT(ctx); - GLint mapsize, i; - const struct gl_pixelmap *pm; - - ASSERT_OUTSIDE_BEGIN_END(ctx); - - pm = get_pixelmap(ctx, map); - if (!pm) { - _mesa_error(ctx, GL_INVALID_ENUM, "glGetPixelMapuiv(map)"); - return; - } - mapsize = pm->Size; - - if (!validate_pbo_access(ctx, &ctx->Pack, mapsize, - GL_INTENSITY, GL_UNSIGNED_INT, values)) { - return; - } - - values = (GLuint *) _mesa_map_pbo_dest(ctx, &ctx->Pack, values); - if (!values) { - if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "glGetPixelMapuiv(PBO is mapped)"); - } - return; - } - - if (map == GL_PIXEL_MAP_S_TO_S) { - /* special case */ - memcpy(values, ctx->PixelMaps.StoS.Map, mapsize * sizeof(GLint)); - } - else { - for (i = 0; i < mapsize; i++) { - values[i] = FLOAT_TO_UINT( pm->Map[i] ); - } - } - - _mesa_unmap_pbo_dest(ctx, &ctx->Pack); -} - - -static void GLAPIENTRY -_mesa_GetPixelMapusv( GLenum map, GLushort *values ) -{ - GET_CURRENT_CONTEXT(ctx); - GLint mapsize, i; - const struct gl_pixelmap *pm; - - ASSERT_OUTSIDE_BEGIN_END(ctx); - - pm = get_pixelmap(ctx, map); - if (!pm) { - _mesa_error(ctx, GL_INVALID_ENUM, "glGetPixelMapusv(map)"); - return; - } - mapsize = pm->Size; - - if (!validate_pbo_access(ctx, &ctx->Pack, mapsize, - GL_INTENSITY, GL_UNSIGNED_SHORT, values)) { - return; - } - - values = (GLushort *) _mesa_map_pbo_dest(ctx, &ctx->Pack, values); - if (!values) { - if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "glGetPixelMapusv(PBO is mapped)"); - } - return; - } - - switch (map) { - /* special cases */ - case GL_PIXEL_MAP_I_TO_I: - for (i = 0; i < mapsize; i++) { - values[i] = (GLushort) CLAMP(ctx->PixelMaps.ItoI.Map[i], 0.0, 65535.); - } - break; - case GL_PIXEL_MAP_S_TO_S: - for (i = 0; i < mapsize; i++) { - values[i] = (GLushort) CLAMP(ctx->PixelMaps.StoS.Map[i], 0.0, 65535.); - } - break; - default: - for (i = 0; i < mapsize; i++) { - CLAMPED_FLOAT_TO_USHORT(values[i], pm->Map[i] ); - } - } - - _mesa_unmap_pbo_dest(ctx, &ctx->Pack); -} - - - -/**********************************************************************/ -/***** glPixelTransfer *****/ -/**********************************************************************/ - - -/* - * Implements glPixelTransfer[fi] whether called immediately or from a - * display list. - */ -static void GLAPIENTRY -_mesa_PixelTransferf( GLenum pname, GLfloat param ) -{ - GET_CURRENT_CONTEXT(ctx); - ASSERT_OUTSIDE_BEGIN_END(ctx); - - switch (pname) { - case GL_MAP_COLOR: - if (ctx->Pixel.MapColorFlag == (param ? GL_TRUE : GL_FALSE)) - return; - FLUSH_VERTICES(ctx, _NEW_PIXEL); - ctx->Pixel.MapColorFlag = param ? GL_TRUE : GL_FALSE; - break; - case GL_MAP_STENCIL: - if (ctx->Pixel.MapStencilFlag == (param ? GL_TRUE : GL_FALSE)) - return; - FLUSH_VERTICES(ctx, _NEW_PIXEL); - ctx->Pixel.MapStencilFlag = param ? GL_TRUE : GL_FALSE; - break; - case GL_INDEX_SHIFT: - if (ctx->Pixel.IndexShift == (GLint) param) - return; - FLUSH_VERTICES(ctx, _NEW_PIXEL); - ctx->Pixel.IndexShift = (GLint) param; - break; - case GL_INDEX_OFFSET: - if (ctx->Pixel.IndexOffset == (GLint) param) - return; - FLUSH_VERTICES(ctx, _NEW_PIXEL); - ctx->Pixel.IndexOffset = (GLint) param; - break; - case GL_RED_SCALE: - if (ctx->Pixel.RedScale == param) - return; - FLUSH_VERTICES(ctx, _NEW_PIXEL); - ctx->Pixel.RedScale = param; - break; - case GL_RED_BIAS: - if (ctx->Pixel.RedBias == param) - return; - FLUSH_VERTICES(ctx, _NEW_PIXEL); - ctx->Pixel.RedBias = param; - break; - case GL_GREEN_SCALE: - if (ctx->Pixel.GreenScale == param) - return; - FLUSH_VERTICES(ctx, _NEW_PIXEL); - ctx->Pixel.GreenScale = param; - break; - case GL_GREEN_BIAS: - if (ctx->Pixel.GreenBias == param) - return; - FLUSH_VERTICES(ctx, _NEW_PIXEL); - ctx->Pixel.GreenBias = param; - break; - case GL_BLUE_SCALE: - if (ctx->Pixel.BlueScale == param) - return; - FLUSH_VERTICES(ctx, _NEW_PIXEL); - ctx->Pixel.BlueScale = param; - break; - case GL_BLUE_BIAS: - if (ctx->Pixel.BlueBias == param) - return; - FLUSH_VERTICES(ctx, _NEW_PIXEL); - ctx->Pixel.BlueBias = param; - break; - case GL_ALPHA_SCALE: - if (ctx->Pixel.AlphaScale == param) - return; - FLUSH_VERTICES(ctx, _NEW_PIXEL); - ctx->Pixel.AlphaScale = param; - break; - case GL_ALPHA_BIAS: - if (ctx->Pixel.AlphaBias == param) - return; - FLUSH_VERTICES(ctx, _NEW_PIXEL); - ctx->Pixel.AlphaBias = param; - break; - case GL_DEPTH_SCALE: - if (ctx->Pixel.DepthScale == param) - return; - FLUSH_VERTICES(ctx, _NEW_PIXEL); - ctx->Pixel.DepthScale = param; - break; - case GL_DEPTH_BIAS: - if (ctx->Pixel.DepthBias == param) - return; - FLUSH_VERTICES(ctx, _NEW_PIXEL); - ctx->Pixel.DepthBias = param; - break; - case GL_POST_COLOR_MATRIX_RED_SCALE: - if (ctx->Pixel.PostColorMatrixScale[0] == param) - return; - FLUSH_VERTICES(ctx, _NEW_PIXEL); - ctx->Pixel.PostColorMatrixScale[0] = param; - break; - case GL_POST_COLOR_MATRIX_RED_BIAS: - if (ctx->Pixel.PostColorMatrixBias[0] == param) - return; - FLUSH_VERTICES(ctx, _NEW_PIXEL); - ctx->Pixel.PostColorMatrixBias[0] = param; - break; - case GL_POST_COLOR_MATRIX_GREEN_SCALE: - if (ctx->Pixel.PostColorMatrixScale[1] == param) - return; - FLUSH_VERTICES(ctx, _NEW_PIXEL); - ctx->Pixel.PostColorMatrixScale[1] = param; - break; - case GL_POST_COLOR_MATRIX_GREEN_BIAS: - if (ctx->Pixel.PostColorMatrixBias[1] == param) - return; - FLUSH_VERTICES(ctx, _NEW_PIXEL); - ctx->Pixel.PostColorMatrixBias[1] = param; - break; - case GL_POST_COLOR_MATRIX_BLUE_SCALE: - if (ctx->Pixel.PostColorMatrixScale[2] == param) - return; - FLUSH_VERTICES(ctx, _NEW_PIXEL); - ctx->Pixel.PostColorMatrixScale[2] = param; - break; - case GL_POST_COLOR_MATRIX_BLUE_BIAS: - if (ctx->Pixel.PostColorMatrixBias[2] == param) - return; - FLUSH_VERTICES(ctx, _NEW_PIXEL); - ctx->Pixel.PostColorMatrixBias[2] = param; - break; - case GL_POST_COLOR_MATRIX_ALPHA_SCALE: - if (ctx->Pixel.PostColorMatrixScale[3] == param) - return; - FLUSH_VERTICES(ctx, _NEW_PIXEL); - ctx->Pixel.PostColorMatrixScale[3] = param; - break; - case GL_POST_COLOR_MATRIX_ALPHA_BIAS: - if (ctx->Pixel.PostColorMatrixBias[3] == param) - return; - FLUSH_VERTICES(ctx, _NEW_PIXEL); - ctx->Pixel.PostColorMatrixBias[3] = param; - break; - case GL_POST_CONVOLUTION_RED_SCALE: - if (ctx->Pixel.PostConvolutionScale[0] == param) - return; - FLUSH_VERTICES(ctx, _NEW_PIXEL); - ctx->Pixel.PostConvolutionScale[0] = param; - break; - case GL_POST_CONVOLUTION_RED_BIAS: - if (ctx->Pixel.PostConvolutionBias[0] == param) - return; - FLUSH_VERTICES(ctx, _NEW_PIXEL); - ctx->Pixel.PostConvolutionBias[0] = param; - break; - case GL_POST_CONVOLUTION_GREEN_SCALE: - if (ctx->Pixel.PostConvolutionScale[1] == param) - return; - FLUSH_VERTICES(ctx, _NEW_PIXEL); - ctx->Pixel.PostConvolutionScale[1] = param; - break; - case GL_POST_CONVOLUTION_GREEN_BIAS: - if (ctx->Pixel.PostConvolutionBias[1] == param) - return; - FLUSH_VERTICES(ctx, _NEW_PIXEL); - ctx->Pixel.PostConvolutionBias[1] = param; - break; - case GL_POST_CONVOLUTION_BLUE_SCALE: - if (ctx->Pixel.PostConvolutionScale[2] == param) - return; - FLUSH_VERTICES(ctx, _NEW_PIXEL); - ctx->Pixel.PostConvolutionScale[2] = param; - break; - case GL_POST_CONVOLUTION_BLUE_BIAS: - if (ctx->Pixel.PostConvolutionBias[2] == param) - return; - FLUSH_VERTICES(ctx, _NEW_PIXEL); - ctx->Pixel.PostConvolutionBias[2] = param; - break; - case GL_POST_CONVOLUTION_ALPHA_SCALE: - if (ctx->Pixel.PostConvolutionScale[3] == param) - return; - FLUSH_VERTICES(ctx, _NEW_PIXEL); - ctx->Pixel.PostConvolutionScale[3] = param; - break; - case GL_POST_CONVOLUTION_ALPHA_BIAS: - if (ctx->Pixel.PostConvolutionBias[3] == param) - return; - FLUSH_VERTICES(ctx, _NEW_PIXEL); - ctx->Pixel.PostConvolutionBias[3] = param; - break; - default: - _mesa_error( ctx, GL_INVALID_ENUM, "glPixelTransfer(pname)" ); - return; - } -} - - -static void GLAPIENTRY -_mesa_PixelTransferi( GLenum pname, GLint param ) -{ - _mesa_PixelTransferf( pname, (GLfloat) param ); -} - - - -/**********************************************************************/ -/***** State Management *****/ -/**********************************************************************/ - -/* - * Return a bitmask of IMAGE_*_BIT flags which to indicate which - * pixel transfer operations are enabled. - */ -static void -update_image_transfer_state(GLcontext *ctx) -{ - GLuint mask = 0; - - if (ctx->Pixel.RedScale != 1.0F || ctx->Pixel.RedBias != 0.0F || - ctx->Pixel.GreenScale != 1.0F || ctx->Pixel.GreenBias != 0.0F || - ctx->Pixel.BlueScale != 1.0F || ctx->Pixel.BlueBias != 0.0F || - ctx->Pixel.AlphaScale != 1.0F || ctx->Pixel.AlphaBias != 0.0F) - mask |= IMAGE_SCALE_BIAS_BIT; - - if (ctx->Pixel.IndexShift || ctx->Pixel.IndexOffset) - mask |= IMAGE_SHIFT_OFFSET_BIT; - - if (ctx->Pixel.MapColorFlag) - mask |= IMAGE_MAP_COLOR_BIT; - - if (ctx->Pixel.ColorTableEnabled[COLORTABLE_PRECONVOLUTION]) - mask |= IMAGE_COLOR_TABLE_BIT; - - if (ctx->Pixel.Convolution1DEnabled || - ctx->Pixel.Convolution2DEnabled || - ctx->Pixel.Separable2DEnabled) { - mask |= IMAGE_CONVOLUTION_BIT; - if (ctx->Pixel.PostConvolutionScale[0] != 1.0F || - ctx->Pixel.PostConvolutionScale[1] != 1.0F || - ctx->Pixel.PostConvolutionScale[2] != 1.0F || - ctx->Pixel.PostConvolutionScale[3] != 1.0F || - ctx->Pixel.PostConvolutionBias[0] != 0.0F || - ctx->Pixel.PostConvolutionBias[1] != 0.0F || - ctx->Pixel.PostConvolutionBias[2] != 0.0F || - ctx->Pixel.PostConvolutionBias[3] != 0.0F) { - mask |= IMAGE_POST_CONVOLUTION_SCALE_BIAS; - } - } - - if (ctx->Pixel.ColorTableEnabled[COLORTABLE_POSTCONVOLUTION]) - mask |= IMAGE_POST_CONVOLUTION_COLOR_TABLE_BIT; - - if (ctx->ColorMatrixStack.Top->type != MATRIX_IDENTITY || - ctx->Pixel.PostColorMatrixScale[0] != 1.0F || - ctx->Pixel.PostColorMatrixBias[0] != 0.0F || - ctx->Pixel.PostColorMatrixScale[1] != 1.0F || - ctx->Pixel.PostColorMatrixBias[1] != 0.0F || - ctx->Pixel.PostColorMatrixScale[2] != 1.0F || - ctx->Pixel.PostColorMatrixBias[2] != 0.0F || - ctx->Pixel.PostColorMatrixScale[3] != 1.0F || - ctx->Pixel.PostColorMatrixBias[3] != 0.0F) - mask |= IMAGE_COLOR_MATRIX_BIT; - - if (ctx->Pixel.ColorTableEnabled[COLORTABLE_POSTCOLORMATRIX]) - mask |= IMAGE_POST_COLOR_MATRIX_COLOR_TABLE_BIT; - - if (ctx->Pixel.HistogramEnabled) - mask |= IMAGE_HISTOGRAM_BIT; - - if (ctx->Pixel.MinMaxEnabled) - mask |= IMAGE_MIN_MAX_BIT; - - ctx->_ImageTransferState = mask; -} - - -/** - * Update mesa pixel transfer derived state. - */ -void _mesa_update_pixel( GLcontext *ctx, GLuint new_state ) -{ - if (new_state & _NEW_COLOR_MATRIX) - _math_matrix_analyse( ctx->ColorMatrixStack.Top ); - - /* References ColorMatrix.type (derived above). - */ - if (new_state & _MESA_NEW_TRANSFER_STATE) - update_image_transfer_state(ctx); -} - - -void -_mesa_init_pixel_dispatch(struct _glapi_table *disp) -{ - SET_GetPixelMapfv(disp, _mesa_GetPixelMapfv); - SET_GetPixelMapuiv(disp, _mesa_GetPixelMapuiv); - SET_GetPixelMapusv(disp, _mesa_GetPixelMapusv); - SET_PixelMapfv(disp, _mesa_PixelMapfv); - SET_PixelMapuiv(disp, _mesa_PixelMapuiv); - SET_PixelMapusv(disp, _mesa_PixelMapusv); - SET_PixelTransferf(disp, _mesa_PixelTransferf); - SET_PixelTransferi(disp, _mesa_PixelTransferi); - SET_PixelZoom(disp, _mesa_PixelZoom); -} - - -#endif /* FEATURE_pixel_transfer */ - - -/**********************************************************************/ -/***** Initialization *****/ -/**********************************************************************/ - -static void -init_pixelmap(struct gl_pixelmap *map) -{ - map->Size = 1; - map->Map[0] = 0.0; - map->Map8[0] = 0; -} - - -/** - * Initialize the context's PIXEL attribute group. - */ -void -_mesa_init_pixel( GLcontext *ctx ) -{ - int i; - - /* Pixel group */ - ctx->Pixel.RedBias = 0.0; - ctx->Pixel.RedScale = 1.0; - ctx->Pixel.GreenBias = 0.0; - ctx->Pixel.GreenScale = 1.0; - ctx->Pixel.BlueBias = 0.0; - ctx->Pixel.BlueScale = 1.0; - ctx->Pixel.AlphaBias = 0.0; - ctx->Pixel.AlphaScale = 1.0; - ctx->Pixel.DepthBias = 0.0; - ctx->Pixel.DepthScale = 1.0; - ctx->Pixel.IndexOffset = 0; - ctx->Pixel.IndexShift = 0; - ctx->Pixel.ZoomX = 1.0; - ctx->Pixel.ZoomY = 1.0; - ctx->Pixel.MapColorFlag = GL_FALSE; - ctx->Pixel.MapStencilFlag = GL_FALSE; - init_pixelmap(&ctx->PixelMaps.StoS); - init_pixelmap(&ctx->PixelMaps.ItoI); - init_pixelmap(&ctx->PixelMaps.ItoR); - init_pixelmap(&ctx->PixelMaps.ItoG); - init_pixelmap(&ctx->PixelMaps.ItoB); - init_pixelmap(&ctx->PixelMaps.ItoA); - init_pixelmap(&ctx->PixelMaps.RtoR); - init_pixelmap(&ctx->PixelMaps.GtoG); - init_pixelmap(&ctx->PixelMaps.BtoB); - init_pixelmap(&ctx->PixelMaps.AtoA); - ctx->Pixel.HistogramEnabled = GL_FALSE; - ctx->Pixel.MinMaxEnabled = GL_FALSE; - ASSIGN_4V(ctx->Pixel.PostColorMatrixScale, 1.0, 1.0, 1.0, 1.0); - ASSIGN_4V(ctx->Pixel.PostColorMatrixBias, 0.0, 0.0, 0.0, 0.0); - for (i = 0; i < COLORTABLE_MAX; i++) { - ASSIGN_4V(ctx->Pixel.ColorTableScale[i], 1.0, 1.0, 1.0, 1.0); - ASSIGN_4V(ctx->Pixel.ColorTableBias[i], 0.0, 0.0, 0.0, 0.0); - ctx->Pixel.ColorTableEnabled[i] = GL_FALSE; - } - ctx->Pixel.Convolution1DEnabled = GL_FALSE; - ctx->Pixel.Convolution2DEnabled = GL_FALSE; - ctx->Pixel.Separable2DEnabled = GL_FALSE; - for (i = 0; i < 3; i++) { - ASSIGN_4V(ctx->Pixel.ConvolutionBorderColor[i], 0.0, 0.0, 0.0, 0.0); - ctx->Pixel.ConvolutionBorderMode[i] = GL_REDUCE; - ASSIGN_4V(ctx->Pixel.ConvolutionFilterScale[i], 1.0, 1.0, 1.0, 1.0); - ASSIGN_4V(ctx->Pixel.ConvolutionFilterBias[i], 0.0, 0.0, 0.0, 0.0); - } - for (i = 0; i < MAX_CONVOLUTION_WIDTH * MAX_CONVOLUTION_WIDTH * 4; i++) { - ctx->Convolution1D.Filter[i] = 0.0; - ctx->Convolution2D.Filter[i] = 0.0; - ctx->Separable2D.Filter[i] = 0.0; - } - ASSIGN_4V(ctx->Pixel.PostConvolutionScale, 1.0, 1.0, 1.0, 1.0); - ASSIGN_4V(ctx->Pixel.PostConvolutionBias, 0.0, 0.0, 0.0, 0.0); - /* GL_SGI_texture_color_table */ - ASSIGN_4V(ctx->Pixel.TextureColorTableScale, 1.0, 1.0, 1.0, 1.0); - ASSIGN_4V(ctx->Pixel.TextureColorTableBias, 0.0, 0.0, 0.0, 0.0); - - if (ctx->Visual.doubleBufferMode) { - ctx->Pixel.ReadBuffer = GL_BACK; - } - else { - ctx->Pixel.ReadBuffer = GL_FRONT; - } - - /* Miscellaneous */ - ctx->_ImageTransferState = 0; -} +/* + * Mesa 3-D graphics library + * Version: 7.1 + * + * Copyright (C) 1999-2008 Brian Paul All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN + * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + + +/** + * \file pixel.c + * Pixel transfer functions (glPixelZoom, glPixelMap, glPixelTransfer) + */ + +#include "glheader.h" +#include "bufferobj.h" +#include "colormac.h" +#include "context.h" +#include "macros.h" +#include "pixel.h" +#include "mtypes.h" +#include "main/dispatch.h" + + +#if FEATURE_pixel_transfer + + +/**********************************************************************/ +/***** glPixelZoom *****/ +/**********************************************************************/ + +static void GLAPIENTRY +_mesa_PixelZoom( GLfloat xfactor, GLfloat yfactor ) +{ + GET_CURRENT_CONTEXT(ctx); + + if (ctx->Pixel.ZoomX == xfactor && + ctx->Pixel.ZoomY == yfactor) + return; + + FLUSH_VERTICES(ctx, _NEW_PIXEL); + ctx->Pixel.ZoomX = xfactor; + ctx->Pixel.ZoomY = yfactor; +} + + + +/**********************************************************************/ +/***** glPixelMap *****/ +/**********************************************************************/ + +/** + * Return pointer to a pixelmap by name. + */ +static struct gl_pixelmap * +get_pixelmap(struct gl_context *ctx, GLenum map) +{ + switch (map) { + case GL_PIXEL_MAP_I_TO_I: + return &ctx->PixelMaps.ItoI; + case GL_PIXEL_MAP_S_TO_S: + return &ctx->PixelMaps.StoS; + case GL_PIXEL_MAP_I_TO_R: + return &ctx->PixelMaps.ItoR; + case GL_PIXEL_MAP_I_TO_G: + return &ctx->PixelMaps.ItoG; + case GL_PIXEL_MAP_I_TO_B: + return &ctx->PixelMaps.ItoB; + case GL_PIXEL_MAP_I_TO_A: + return &ctx->PixelMaps.ItoA; + case GL_PIXEL_MAP_R_TO_R: + return &ctx->PixelMaps.RtoR; + case GL_PIXEL_MAP_G_TO_G: + return &ctx->PixelMaps.GtoG; + case GL_PIXEL_MAP_B_TO_B: + return &ctx->PixelMaps.BtoB; + case GL_PIXEL_MAP_A_TO_A: + return &ctx->PixelMaps.AtoA; + default: + return NULL; + } +} + + +/** + * Helper routine used by the other _mesa_PixelMap() functions. + */ +static void +store_pixelmap(struct gl_context *ctx, GLenum map, GLsizei mapsize, + const GLfloat *values) +{ + GLint i; + struct gl_pixelmap *pm = get_pixelmap(ctx, map); + if (!pm) { + _mesa_error(ctx, GL_INVALID_ENUM, "glPixelMap(map)"); + return; + } + + switch (map) { + case GL_PIXEL_MAP_S_TO_S: + /* special case */ + ctx->PixelMaps.StoS.Size = mapsize; + for (i = 0; i < mapsize; i++) { + ctx->PixelMaps.StoS.Map[i] = (GLfloat)IROUND(values[i]); + } + break; + case GL_PIXEL_MAP_I_TO_I: + /* special case */ + ctx->PixelMaps.ItoI.Size = mapsize; + for (i = 0; i < mapsize; i++) { + ctx->PixelMaps.ItoI.Map[i] = values[i]; + } + break; + default: + /* general case */ + pm->Size = mapsize; + for (i = 0; i < mapsize; i++) { + GLfloat val = CLAMP(values[i], 0.0F, 1.0F); + pm->Map[i] = val; + pm->Map8[i] = (GLint) (val * 255.0F); + } + } +} + + +/** + * Convenience wrapper for _mesa_validate_pbo_access() for gl[Get]PixelMap(). + */ +static GLboolean +validate_pbo_access(struct gl_context *ctx, struct gl_pixelstore_attrib *pack, + GLsizei mapsize, GLenum format, GLenum type, + const GLvoid *ptr) +{ + GLboolean ok; + + /* Note, need to use DefaultPacking and Unpack's buffer object */ + _mesa_reference_buffer_object(ctx, + &ctx->DefaultPacking.BufferObj, + pack->BufferObj); + + ok = _mesa_validate_pbo_access(1, &ctx->DefaultPacking, mapsize, 1, 1, + format, type, ptr); + + /* restore */ + _mesa_reference_buffer_object(ctx, + &ctx->DefaultPacking.BufferObj, + ctx->Shared->NullBufferObj); + + if (!ok) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glPixelMap(invalid PBO access)"); + } + return ok; +} + + +static void GLAPIENTRY +_mesa_PixelMapfv( GLenum map, GLsizei mapsize, const GLfloat *values ) +{ + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END(ctx); + + /* XXX someday, test against ctx->Const.MaxPixelMapTableSize */ + if (mapsize < 1 || mapsize > MAX_PIXEL_MAP_TABLE) { + _mesa_error( ctx, GL_INVALID_VALUE, "glPixelMapfv(mapsize)" ); + return; + } + + if (map >= GL_PIXEL_MAP_S_TO_S && map <= GL_PIXEL_MAP_I_TO_A) { + /* test that mapsize is a power of two */ + if (!_mesa_is_pow_two(mapsize)) { + _mesa_error( ctx, GL_INVALID_VALUE, "glPixelMapfv(mapsize)" ); + return; + } + } + + FLUSH_VERTICES(ctx, _NEW_PIXEL); + + if (!validate_pbo_access(ctx, &ctx->Unpack, mapsize, + GL_INTENSITY, GL_FLOAT, values)) { + return; + } + + values = (const GLfloat *) _mesa_map_pbo_source(ctx, &ctx->Unpack, values); + if (!values) { + if (_mesa_is_bufferobj(ctx->Unpack.BufferObj)) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glPixelMapfv(PBO is mapped)"); + } + return; + } + + store_pixelmap(ctx, map, mapsize, values); + + _mesa_unmap_pbo_source(ctx, &ctx->Unpack); +} + + +static void GLAPIENTRY +_mesa_PixelMapuiv(GLenum map, GLsizei mapsize, const GLuint *values ) +{ + GLfloat fvalues[MAX_PIXEL_MAP_TABLE]; + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END(ctx); + + if (mapsize < 1 || mapsize > MAX_PIXEL_MAP_TABLE) { + _mesa_error( ctx, GL_INVALID_VALUE, "glPixelMapuiv(mapsize)" ); + return; + } + + if (map >= GL_PIXEL_MAP_S_TO_S && map <= GL_PIXEL_MAP_I_TO_A) { + /* test that mapsize is a power of two */ + if (!_mesa_is_pow_two(mapsize)) { + _mesa_error( ctx, GL_INVALID_VALUE, "glPixelMapuiv(mapsize)" ); + return; + } + } + + FLUSH_VERTICES(ctx, _NEW_PIXEL); + + if (!validate_pbo_access(ctx, &ctx->Unpack, mapsize, + GL_INTENSITY, GL_UNSIGNED_INT, values)) { + return; + } + + values = (const GLuint *) _mesa_map_pbo_source(ctx, &ctx->Unpack, values); + if (!values) { + if (_mesa_is_bufferobj(ctx->Unpack.BufferObj)) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glPixelMapuiv(PBO is mapped)"); + } + return; + } + + /* convert to floats */ + if (map == GL_PIXEL_MAP_I_TO_I || map == GL_PIXEL_MAP_S_TO_S) { + GLint i; + for (i = 0; i < mapsize; i++) { + fvalues[i] = (GLfloat) values[i]; + } + } + else { + GLint i; + for (i = 0; i < mapsize; i++) { + fvalues[i] = UINT_TO_FLOAT( values[i] ); + } + } + + _mesa_unmap_pbo_source(ctx, &ctx->Unpack); + + store_pixelmap(ctx, map, mapsize, fvalues); +} + + +static void GLAPIENTRY +_mesa_PixelMapusv(GLenum map, GLsizei mapsize, const GLushort *values ) +{ + GLfloat fvalues[MAX_PIXEL_MAP_TABLE]; + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END(ctx); + + if (mapsize < 1 || mapsize > MAX_PIXEL_MAP_TABLE) { + _mesa_error( ctx, GL_INVALID_VALUE, "glPixelMapusv(mapsize)" ); + return; + } + + if (map >= GL_PIXEL_MAP_S_TO_S && map <= GL_PIXEL_MAP_I_TO_A) { + /* test that mapsize is a power of two */ + if (!_mesa_is_pow_two(mapsize)) { + _mesa_error( ctx, GL_INVALID_VALUE, "glPixelMapuiv(mapsize)" ); + return; + } + } + + FLUSH_VERTICES(ctx, _NEW_PIXEL); + + if (!validate_pbo_access(ctx, &ctx->Unpack, mapsize, + GL_INTENSITY, GL_UNSIGNED_SHORT, values)) { + return; + } + + values = (const GLushort *) _mesa_map_pbo_source(ctx, &ctx->Unpack, values); + if (!values) { + if (_mesa_is_bufferobj(ctx->Unpack.BufferObj)) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glPixelMapusv(PBO is mapped)"); + } + return; + } + + /* convert to floats */ + if (map == GL_PIXEL_MAP_I_TO_I || map == GL_PIXEL_MAP_S_TO_S) { + GLint i; + for (i = 0; i < mapsize; i++) { + fvalues[i] = (GLfloat) values[i]; + } + } + else { + GLint i; + for (i = 0; i < mapsize; i++) { + fvalues[i] = USHORT_TO_FLOAT( values[i] ); + } + } + + _mesa_unmap_pbo_source(ctx, &ctx->Unpack); + + store_pixelmap(ctx, map, mapsize, fvalues); +} + + +static void GLAPIENTRY +_mesa_GetPixelMapfv( GLenum map, GLfloat *values ) +{ + GET_CURRENT_CONTEXT(ctx); + GLuint mapsize, i; + const struct gl_pixelmap *pm; + + ASSERT_OUTSIDE_BEGIN_END(ctx); + + pm = get_pixelmap(ctx, map); + if (!pm) { + _mesa_error(ctx, GL_INVALID_ENUM, "glGetPixelMapfv(map)"); + return; + } + + mapsize = pm->Size; + + if (!validate_pbo_access(ctx, &ctx->Pack, mapsize, + GL_INTENSITY, GL_FLOAT, values)) { + return; + } + + values = (GLfloat *) _mesa_map_pbo_dest(ctx, &ctx->Pack, values); + if (!values) { + if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glGetPixelMapfv(PBO is mapped)"); + } + return; + } + + if (map == GL_PIXEL_MAP_S_TO_S) { + /* special case */ + for (i = 0; i < mapsize; i++) { + values[i] = (GLfloat) ctx->PixelMaps.StoS.Map[i]; + } + } + else { + memcpy(values, pm->Map, mapsize * sizeof(GLfloat)); + } + + _mesa_unmap_pbo_dest(ctx, &ctx->Pack); +} + + +static void GLAPIENTRY +_mesa_GetPixelMapuiv( GLenum map, GLuint *values ) +{ + GET_CURRENT_CONTEXT(ctx); + GLint mapsize, i; + const struct gl_pixelmap *pm; + + ASSERT_OUTSIDE_BEGIN_END(ctx); + + pm = get_pixelmap(ctx, map); + if (!pm) { + _mesa_error(ctx, GL_INVALID_ENUM, "glGetPixelMapuiv(map)"); + return; + } + mapsize = pm->Size; + + if (!validate_pbo_access(ctx, &ctx->Pack, mapsize, + GL_INTENSITY, GL_UNSIGNED_INT, values)) { + return; + } + + values = (GLuint *) _mesa_map_pbo_dest(ctx, &ctx->Pack, values); + if (!values) { + if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glGetPixelMapuiv(PBO is mapped)"); + } + return; + } + + if (map == GL_PIXEL_MAP_S_TO_S) { + /* special case */ + memcpy(values, ctx->PixelMaps.StoS.Map, mapsize * sizeof(GLint)); + } + else { + for (i = 0; i < mapsize; i++) { + values[i] = FLOAT_TO_UINT( pm->Map[i] ); + } + } + + _mesa_unmap_pbo_dest(ctx, &ctx->Pack); +} + + +static void GLAPIENTRY +_mesa_GetPixelMapusv( GLenum map, GLushort *values ) +{ + GET_CURRENT_CONTEXT(ctx); + GLint mapsize, i; + const struct gl_pixelmap *pm; + + ASSERT_OUTSIDE_BEGIN_END(ctx); + + pm = get_pixelmap(ctx, map); + if (!pm) { + _mesa_error(ctx, GL_INVALID_ENUM, "glGetPixelMapusv(map)"); + return; + } + mapsize = pm->Size; + + if (!validate_pbo_access(ctx, &ctx->Pack, mapsize, + GL_INTENSITY, GL_UNSIGNED_SHORT, values)) { + return; + } + + values = (GLushort *) _mesa_map_pbo_dest(ctx, &ctx->Pack, values); + if (!values) { + if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glGetPixelMapusv(PBO is mapped)"); + } + return; + } + + switch (map) { + /* special cases */ + case GL_PIXEL_MAP_I_TO_I: + for (i = 0; i < mapsize; i++) { + values[i] = (GLushort) CLAMP(ctx->PixelMaps.ItoI.Map[i], 0.0, 65535.); + } + break; + case GL_PIXEL_MAP_S_TO_S: + for (i = 0; i < mapsize; i++) { + values[i] = (GLushort) CLAMP(ctx->PixelMaps.StoS.Map[i], 0.0, 65535.); + } + break; + default: + for (i = 0; i < mapsize; i++) { + CLAMPED_FLOAT_TO_USHORT(values[i], pm->Map[i] ); + } + } + + _mesa_unmap_pbo_dest(ctx, &ctx->Pack); +} + + + +/**********************************************************************/ +/***** glPixelTransfer *****/ +/**********************************************************************/ + + +/* + * Implements glPixelTransfer[fi] whether called immediately or from a + * display list. + */ +static void GLAPIENTRY +_mesa_PixelTransferf( GLenum pname, GLfloat param ) +{ + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END(ctx); + + switch (pname) { + case GL_MAP_COLOR: + if (ctx->Pixel.MapColorFlag == (param ? GL_TRUE : GL_FALSE)) + return; + FLUSH_VERTICES(ctx, _NEW_PIXEL); + ctx->Pixel.MapColorFlag = param ? GL_TRUE : GL_FALSE; + break; + case GL_MAP_STENCIL: + if (ctx->Pixel.MapStencilFlag == (param ? GL_TRUE : GL_FALSE)) + return; + FLUSH_VERTICES(ctx, _NEW_PIXEL); + ctx->Pixel.MapStencilFlag = param ? GL_TRUE : GL_FALSE; + break; + case GL_INDEX_SHIFT: + if (ctx->Pixel.IndexShift == (GLint) param) + return; + FLUSH_VERTICES(ctx, _NEW_PIXEL); + ctx->Pixel.IndexShift = (GLint) param; + break; + case GL_INDEX_OFFSET: + if (ctx->Pixel.IndexOffset == (GLint) param) + return; + FLUSH_VERTICES(ctx, _NEW_PIXEL); + ctx->Pixel.IndexOffset = (GLint) param; + break; + case GL_RED_SCALE: + if (ctx->Pixel.RedScale == param) + return; + FLUSH_VERTICES(ctx, _NEW_PIXEL); + ctx->Pixel.RedScale = param; + break; + case GL_RED_BIAS: + if (ctx->Pixel.RedBias == param) + return; + FLUSH_VERTICES(ctx, _NEW_PIXEL); + ctx->Pixel.RedBias = param; + break; + case GL_GREEN_SCALE: + if (ctx->Pixel.GreenScale == param) + return; + FLUSH_VERTICES(ctx, _NEW_PIXEL); + ctx->Pixel.GreenScale = param; + break; + case GL_GREEN_BIAS: + if (ctx->Pixel.GreenBias == param) + return; + FLUSH_VERTICES(ctx, _NEW_PIXEL); + ctx->Pixel.GreenBias = param; + break; + case GL_BLUE_SCALE: + if (ctx->Pixel.BlueScale == param) + return; + FLUSH_VERTICES(ctx, _NEW_PIXEL); + ctx->Pixel.BlueScale = param; + break; + case GL_BLUE_BIAS: + if (ctx->Pixel.BlueBias == param) + return; + FLUSH_VERTICES(ctx, _NEW_PIXEL); + ctx->Pixel.BlueBias = param; + break; + case GL_ALPHA_SCALE: + if (ctx->Pixel.AlphaScale == param) + return; + FLUSH_VERTICES(ctx, _NEW_PIXEL); + ctx->Pixel.AlphaScale = param; + break; + case GL_ALPHA_BIAS: + if (ctx->Pixel.AlphaBias == param) + return; + FLUSH_VERTICES(ctx, _NEW_PIXEL); + ctx->Pixel.AlphaBias = param; + break; + case GL_DEPTH_SCALE: + if (ctx->Pixel.DepthScale == param) + return; + FLUSH_VERTICES(ctx, _NEW_PIXEL); + ctx->Pixel.DepthScale = param; + break; + case GL_DEPTH_BIAS: + if (ctx->Pixel.DepthBias == param) + return; + FLUSH_VERTICES(ctx, _NEW_PIXEL); + ctx->Pixel.DepthBias = param; + break; + default: + _mesa_error( ctx, GL_INVALID_ENUM, "glPixelTransfer(pname)" ); + return; + } +} + + +static void GLAPIENTRY +_mesa_PixelTransferi( GLenum pname, GLint param ) +{ + _mesa_PixelTransferf( pname, (GLfloat) param ); +} + + + +/**********************************************************************/ +/***** State Management *****/ +/**********************************************************************/ + +/* + * Return a bitmask of IMAGE_*_BIT flags which to indicate which + * pixel transfer operations are enabled. + */ +static void +update_image_transfer_state(struct gl_context *ctx) +{ + GLuint mask = 0; + + if (ctx->Pixel.RedScale != 1.0F || ctx->Pixel.RedBias != 0.0F || + ctx->Pixel.GreenScale != 1.0F || ctx->Pixel.GreenBias != 0.0F || + ctx->Pixel.BlueScale != 1.0F || ctx->Pixel.BlueBias != 0.0F || + ctx->Pixel.AlphaScale != 1.0F || ctx->Pixel.AlphaBias != 0.0F) + mask |= IMAGE_SCALE_BIAS_BIT; + + if (ctx->Pixel.IndexShift || ctx->Pixel.IndexOffset) + mask |= IMAGE_SHIFT_OFFSET_BIT; + + if (ctx->Pixel.MapColorFlag) + mask |= IMAGE_MAP_COLOR_BIT; + + ctx->_ImageTransferState = mask; +} + + +/** + * Update mesa pixel transfer derived state. + */ +void _mesa_update_pixel( struct gl_context *ctx, GLuint new_state ) +{ + if (new_state & _MESA_NEW_TRANSFER_STATE) + update_image_transfer_state(ctx); +} + + +void +_mesa_init_pixel_dispatch(struct _glapi_table *disp) +{ + SET_GetPixelMapfv(disp, _mesa_GetPixelMapfv); + SET_GetPixelMapuiv(disp, _mesa_GetPixelMapuiv); + SET_GetPixelMapusv(disp, _mesa_GetPixelMapusv); + SET_PixelMapfv(disp, _mesa_PixelMapfv); + SET_PixelMapuiv(disp, _mesa_PixelMapuiv); + SET_PixelMapusv(disp, _mesa_PixelMapusv); + SET_PixelTransferf(disp, _mesa_PixelTransferf); + SET_PixelTransferi(disp, _mesa_PixelTransferi); + SET_PixelZoom(disp, _mesa_PixelZoom); +} + + +#endif /* FEATURE_pixel_transfer */ + + +/**********************************************************************/ +/***** Initialization *****/ +/**********************************************************************/ + +static void +init_pixelmap(struct gl_pixelmap *map) +{ + map->Size = 1; + map->Map[0] = 0.0; + map->Map8[0] = 0; +} + + +/** + * Initialize the context's PIXEL attribute group. + */ +void +_mesa_init_pixel( struct gl_context *ctx ) +{ + /* Pixel group */ + ctx->Pixel.RedBias = 0.0; + ctx->Pixel.RedScale = 1.0; + ctx->Pixel.GreenBias = 0.0; + ctx->Pixel.GreenScale = 1.0; + ctx->Pixel.BlueBias = 0.0; + ctx->Pixel.BlueScale = 1.0; + ctx->Pixel.AlphaBias = 0.0; + ctx->Pixel.AlphaScale = 1.0; + ctx->Pixel.DepthBias = 0.0; + ctx->Pixel.DepthScale = 1.0; + ctx->Pixel.IndexOffset = 0; + ctx->Pixel.IndexShift = 0; + ctx->Pixel.ZoomX = 1.0; + ctx->Pixel.ZoomY = 1.0; + ctx->Pixel.MapColorFlag = GL_FALSE; + ctx->Pixel.MapStencilFlag = GL_FALSE; + init_pixelmap(&ctx->PixelMaps.StoS); + init_pixelmap(&ctx->PixelMaps.ItoI); + init_pixelmap(&ctx->PixelMaps.ItoR); + init_pixelmap(&ctx->PixelMaps.ItoG); + init_pixelmap(&ctx->PixelMaps.ItoB); + init_pixelmap(&ctx->PixelMaps.ItoA); + init_pixelmap(&ctx->PixelMaps.RtoR); + init_pixelmap(&ctx->PixelMaps.GtoG); + init_pixelmap(&ctx->PixelMaps.BtoB); + init_pixelmap(&ctx->PixelMaps.AtoA); + /* GL_SGI_texture_color_table */ + ASSIGN_4V(ctx->Pixel.TextureColorTableScale, 1.0, 1.0, 1.0, 1.0); + ASSIGN_4V(ctx->Pixel.TextureColorTableBias, 0.0, 0.0, 0.0, 0.0); + + if (ctx->Visual.doubleBufferMode) { + ctx->Pixel.ReadBuffer = GL_BACK; + } + else { + ctx->Pixel.ReadBuffer = GL_FRONT; + } + + /* Miscellaneous */ + ctx->_ImageTransferState = 0; +} -- cgit v1.2.3