| /* |
| * Mesa 3-D graphics library |
| * Version: 6.5.3 |
| * |
| * Copyright (C) 1999-2007 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. |
| */ |
| |
| #include "glheader.h" |
| #include "bufferobj.h" |
| #include "colormac.h" |
| #include "context.h" |
| #include "image.h" |
| #include "macros.h" |
| #include "pixel.h" |
| #include "mtypes.h" |
| |
| |
| /**********************************************************************/ |
| /***** glPixelZoom *****/ |
| /**********************************************************************/ |
| |
| |
| |
| 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; |
| } |
| |
| |
| |
| /**********************************************************************/ |
| /***** glPixelStore *****/ |
| /**********************************************************************/ |
| |
| |
| void GLAPIENTRY |
| _mesa_PixelStorei( GLenum pname, GLint param ) |
| { |
| /* NOTE: this call can't be compiled into the display list */ |
| GET_CURRENT_CONTEXT(ctx); |
| ASSERT_OUTSIDE_BEGIN_END(ctx); |
| |
| switch (pname) { |
| case GL_PACK_SWAP_BYTES: |
| if (param == (GLint)ctx->Pack.SwapBytes) |
| return; |
| FLUSH_VERTICES(ctx, _NEW_PACKUNPACK); |
| ctx->Pack.SwapBytes = param ? GL_TRUE : GL_FALSE; |
| break; |
| case GL_PACK_LSB_FIRST: |
| if (param == (GLint)ctx->Pack.LsbFirst) |
| return; |
| FLUSH_VERTICES(ctx, _NEW_PACKUNPACK); |
| ctx->Pack.LsbFirst = param ? GL_TRUE : GL_FALSE; |
| break; |
| case GL_PACK_ROW_LENGTH: |
| if (param<0) { |
| _mesa_error( ctx, GL_INVALID_VALUE, "glPixelStore(param)" ); |
| return; |
| } |
| if (ctx->Pack.RowLength == param) |
| return; |
| FLUSH_VERTICES(ctx, _NEW_PACKUNPACK); |
| ctx->Pack.RowLength = param; |
| break; |
| case GL_PACK_IMAGE_HEIGHT: |
| if (param<0) { |
| _mesa_error( ctx, GL_INVALID_VALUE, "glPixelStore(param)" ); |
| return; |
| } |
| if (ctx->Pack.ImageHeight == param) |
| return; |
| FLUSH_VERTICES(ctx, _NEW_PACKUNPACK); |
| ctx->Pack.ImageHeight = param; |
| break; |
| case GL_PACK_SKIP_PIXELS: |
| if (param<0) { |
| _mesa_error( ctx, GL_INVALID_VALUE, "glPixelStore(param)" ); |
| return; |
| } |
| if (ctx->Pack.SkipPixels == param) |
| return; |
| FLUSH_VERTICES(ctx, _NEW_PACKUNPACK); |
| ctx->Pack.SkipPixels = param; |
| break; |
| case GL_PACK_SKIP_ROWS: |
| if (param<0) { |
| _mesa_error( ctx, GL_INVALID_VALUE, "glPixelStore(param)" ); |
| return; |
| } |
| if (ctx->Pack.SkipRows == param) |
| return; |
| FLUSH_VERTICES(ctx, _NEW_PACKUNPACK); |
| ctx->Pack.SkipRows = param; |
| break; |
| case GL_PACK_SKIP_IMAGES: |
| if (param<0) { |
| _mesa_error( ctx, GL_INVALID_VALUE, "glPixelStore(param)" ); |
| return; |
| } |
| if (ctx->Pack.SkipImages == param) |
| return; |
| FLUSH_VERTICES(ctx, _NEW_PACKUNPACK); |
| ctx->Pack.SkipImages = param; |
| break; |
| case GL_PACK_ALIGNMENT: |
| if (param!=1 && param!=2 && param!=4 && param!=8) { |
| _mesa_error( ctx, GL_INVALID_VALUE, "glPixelStore(param)" ); |
| return; |
| } |
| if (ctx->Pack.Alignment == param) |
| return; |
| FLUSH_VERTICES(ctx, _NEW_PACKUNPACK); |
| ctx->Pack.Alignment = param; |
| break; |
| case GL_PACK_INVERT_MESA: |
| if (!ctx->Extensions.MESA_pack_invert) { |
| _mesa_error( ctx, GL_INVALID_ENUM, "glPixelstore(pname)" ); |
| return; |
| } |
| if (ctx->Pack.Invert == param) |
| return; |
| FLUSH_VERTICES(ctx, _NEW_PACKUNPACK); |
| ctx->Pack.Invert = param; |
| break; |
| |
| case GL_UNPACK_SWAP_BYTES: |
| if (param == (GLint)ctx->Unpack.SwapBytes) |
| return; |
| if ((GLint)ctx->Unpack.SwapBytes == param) |
| return; |
| FLUSH_VERTICES(ctx, _NEW_PACKUNPACK); |
| ctx->Unpack.SwapBytes = param ? GL_TRUE : GL_FALSE; |
| break; |
| case GL_UNPACK_LSB_FIRST: |
| if (param == (GLint)ctx->Unpack.LsbFirst) |
| return; |
| if ((GLint)ctx->Unpack.LsbFirst == param) |
| return; |
| FLUSH_VERTICES(ctx, _NEW_PACKUNPACK); |
| ctx->Unpack.LsbFirst = param ? GL_TRUE : GL_FALSE; |
| break; |
| case GL_UNPACK_ROW_LENGTH: |
| if (param<0) { |
| _mesa_error( ctx, GL_INVALID_VALUE, "glPixelStore(param)" ); |
| return; |
| } |
| if (ctx->Unpack.RowLength == param) |
| return; |
| FLUSH_VERTICES(ctx, _NEW_PACKUNPACK); |
| ctx->Unpack.RowLength = param; |
| break; |
| case GL_UNPACK_IMAGE_HEIGHT: |
| if (param<0) { |
| _mesa_error( ctx, GL_INVALID_VALUE, "glPixelStore(param)" ); |
| return; |
| } |
| if (ctx->Unpack.ImageHeight == param) |
| return; |
| |
| FLUSH_VERTICES(ctx, _NEW_PACKUNPACK); |
| ctx->Unpack.ImageHeight = param; |
| break; |
| case GL_UNPACK_SKIP_PIXELS: |
| if (param<0) { |
| _mesa_error( ctx, GL_INVALID_VALUE, "glPixelStore(param)" ); |
| return; |
| } |
| if (ctx->Unpack.SkipPixels == param) |
| return; |
| FLUSH_VERTICES(ctx, _NEW_PACKUNPACK); |
| ctx->Unpack.SkipPixels = param; |
| break; |
| case GL_UNPACK_SKIP_ROWS: |
| if (param<0) { |
| _mesa_error( ctx, GL_INVALID_VALUE, "glPixelStore(param)" ); |
| return; |
| } |
| if (ctx->Unpack.SkipRows == param) |
| return; |
| FLUSH_VERTICES(ctx, _NEW_PACKUNPACK); |
| ctx->Unpack.SkipRows = param; |
| break; |
| case GL_UNPACK_SKIP_IMAGES: |
| if (param < 0) { |
| _mesa_error( ctx, GL_INVALID_VALUE, "glPixelStore(param)" ); |
| return; |
| } |
| if (ctx->Unpack.SkipImages == param) |
| return; |
| FLUSH_VERTICES(ctx, _NEW_PACKUNPACK); |
| ctx->Unpack.SkipImages = param; |
| break; |
| case GL_UNPACK_ALIGNMENT: |
| if (param!=1 && param!=2 && param!=4 && param!=8) { |
| _mesa_error( ctx, GL_INVALID_VALUE, "glPixelStore" ); |
| return; |
| } |
| if (ctx->Unpack.Alignment == param) |
| return; |
| FLUSH_VERTICES(ctx, _NEW_PACKUNPACK); |
| ctx->Unpack.Alignment = param; |
| break; |
| case GL_UNPACK_CLIENT_STORAGE_APPLE: |
| if (param == (GLint)ctx->Unpack.ClientStorage) |
| return; |
| FLUSH_VERTICES(ctx, _NEW_PACKUNPACK); |
| ctx->Unpack.ClientStorage = param ? GL_TRUE : GL_FALSE; |
| break; |
| default: |
| _mesa_error( ctx, GL_INVALID_ENUM, "glPixelStore" ); |
| return; |
| } |
| } |
| |
| |
| void GLAPIENTRY |
| _mesa_PixelStoref( GLenum pname, GLfloat param ) |
| { |
| _mesa_PixelStorei( pname, (GLint) param ); |
| } |
| |
| |
| |
| /**********************************************************************/ |
| /***** 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] = 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); |
| } |
| } |
| } |
| |
| |
| 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_bitcount((GLuint) mapsize) != 1) { |
| _mesa_error( ctx, GL_INVALID_VALUE, "glPixelMapfv(mapsize)" ); |
| return; |
| } |
| } |
| |
| FLUSH_VERTICES(ctx, _NEW_PIXEL); |
| |
| if (ctx->Unpack.BufferObj->Name) { |
| /* unpack pixelmap from PBO */ |
| GLubyte *buf; |
| /* Note, need to use DefaultPacking and Unpack's buffer object */ |
| ctx->DefaultPacking.BufferObj = ctx->Unpack.BufferObj; |
| if (!_mesa_validate_pbo_access(1, &ctx->DefaultPacking, mapsize, 1, 1, |
| GL_INTENSITY, GL_FLOAT, values)) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glPixelMapfv(invalid PBO access)"); |
| return; |
| } |
| /* restore */ |
| ctx->DefaultPacking.BufferObj = ctx->Array.NullBufferObj; |
| buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT, |
| GL_READ_ONLY_ARB, |
| ctx->Unpack.BufferObj); |
| if (!buf) { |
| /* buffer is already mapped - that's an error */ |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glPixelMapfv(PBO is mapped)"); |
| return; |
| } |
| values = (const GLfloat *) ADD_POINTERS(buf, values); |
| } |
| else if (!values) { |
| return; |
| } |
| |
| store_pixelmap(ctx, map, mapsize, values); |
| |
| if (ctx->Unpack.BufferObj->Name) { |
| ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT, |
| ctx->Unpack.BufferObj); |
| } |
| } |
| |
| |
| 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_bitcount((GLuint) mapsize) != 1) { |
| _mesa_error( ctx, GL_INVALID_VALUE, "glPixelMapuiv(mapsize)" ); |
| return; |
| } |
| } |
| |
| FLUSH_VERTICES(ctx, _NEW_PIXEL); |
| |
| if (ctx->Unpack.BufferObj->Name) { |
| /* unpack pixelmap from PBO */ |
| GLubyte *buf; |
| /* Note, need to use DefaultPacking and Unpack's buffer object */ |
| ctx->DefaultPacking.BufferObj = ctx->Unpack.BufferObj; |
| if (!_mesa_validate_pbo_access(1, &ctx->DefaultPacking, mapsize, 1, 1, |
| GL_INTENSITY, GL_UNSIGNED_INT, values)) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glPixelMapuiv(invalid PBO access)"); |
| return; |
| } |
| /* restore */ |
| ctx->DefaultPacking.BufferObj = ctx->Array.NullBufferObj; |
| buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT, |
| GL_READ_ONLY_ARB, |
| ctx->Unpack.BufferObj); |
| if (!buf) { |
| /* buffer is already mapped - that's an error */ |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glPixelMapuiv(PBO is mapped)"); |
| return; |
| } |
| values = (const GLuint *) ADD_POINTERS(buf, values); |
| } |
| else if (!values) { |
| 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] ); |
| } |
| } |
| |
| if (ctx->Unpack.BufferObj->Name) { |
| ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT, |
| ctx->Unpack.BufferObj); |
| } |
| |
| store_pixelmap(ctx, map, mapsize, fvalues); |
| } |
| |
| |
| 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_bitcount((GLuint) mapsize) != 1) { |
| _mesa_error( ctx, GL_INVALID_VALUE, "glPixelMapuiv(mapsize)" ); |
| return; |
| } |
| } |
| |
| FLUSH_VERTICES(ctx, _NEW_PIXEL); |
| |
| if (ctx->Unpack.BufferObj->Name) { |
| /* unpack pixelmap from PBO */ |
| GLubyte *buf; |
| /* Note, need to use DefaultPacking and Unpack's buffer object */ |
| ctx->DefaultPacking.BufferObj = ctx->Unpack.BufferObj; |
| if (!_mesa_validate_pbo_access(1, &ctx->DefaultPacking, mapsize, 1, 1, |
| GL_INTENSITY, GL_UNSIGNED_SHORT, |
| values)) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glPixelMapusv(invalid PBO access)"); |
| return; |
| } |
| /* restore */ |
| ctx->DefaultPacking.BufferObj = ctx->Array.NullBufferObj; |
| buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT, |
| GL_READ_ONLY_ARB, |
| ctx->Unpack.BufferObj); |
| if (!buf) { |
| /* buffer is already mapped - that's an error */ |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glPixelMapusv(PBO is mapped)"); |
| return; |
| } |
| values = (const GLushort *) ADD_POINTERS(buf, values); |
| } |
| else if (!values) { |
| 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] ); |
| } |
| } |
| |
| if (ctx->Unpack.BufferObj->Name) { |
| ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT, |
| ctx->Unpack.BufferObj); |
| } |
| |
| store_pixelmap(ctx, map, mapsize, fvalues); |
| } |
| |
| |
| 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 (ctx->Pack.BufferObj->Name) { |
| /* pack pixelmap into PBO */ |
| GLubyte *buf; |
| /* Note, need to use DefaultPacking and Pack's buffer object */ |
| ctx->DefaultPacking.BufferObj = ctx->Pack.BufferObj; |
| if (!_mesa_validate_pbo_access(1, &ctx->DefaultPacking, mapsize, 1, 1, |
| GL_INTENSITY, GL_FLOAT, values)) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glGetPixelMapfv(invalid PBO access)"); |
| return; |
| } |
| /* restore */ |
| ctx->DefaultPacking.BufferObj = ctx->Array.NullBufferObj; |
| buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT, |
| GL_WRITE_ONLY_ARB, |
| ctx->Pack.BufferObj); |
| if (!buf) { |
| /* buffer is already mapped - that's an error */ |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glGetPixelMapfv(PBO is mapped)"); |
| return; |
| } |
| values = (GLfloat *) ADD_POINTERS(buf, values); |
| } |
| else if (!values) { |
| 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)); |
| } |
| |
| if (ctx->Pack.BufferObj->Name) { |
| ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT, |
| ctx->Pack.BufferObj); |
| } |
| } |
| |
| |
| 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 (ctx->Pack.BufferObj->Name) { |
| /* pack pixelmap into PBO */ |
| GLubyte *buf; |
| /* Note, need to use DefaultPacking and Pack's buffer object */ |
| ctx->DefaultPacking.BufferObj = ctx->Pack.BufferObj; |
| if (!_mesa_validate_pbo_access(1, &ctx->DefaultPacking, mapsize, 1, 1, |
| GL_INTENSITY, GL_UNSIGNED_INT, values)) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glGetPixelMapuiv(invalid PBO access)"); |
| return; |
| } |
| /* restore */ |
| ctx->DefaultPacking.BufferObj = ctx->Array.NullBufferObj; |
| buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT, |
| GL_WRITE_ONLY_ARB, |
| ctx->Pack.BufferObj); |
| if (!buf) { |
| /* buffer is already mapped - that's an error */ |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glGetPixelMapuiv(PBO is mapped)"); |
| return; |
| } |
| values = (GLuint *) ADD_POINTERS(buf, values); |
| } |
| else if (!values) { |
| 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] ); |
| } |
| } |
| |
| if (ctx->Pack.BufferObj->Name) { |
| ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT, |
| ctx->Pack.BufferObj); |
| } |
| } |
| |
| |
| 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 ? pm->Size : 0; |
| |
| if (ctx->Pack.BufferObj->Name) { |
| /* pack pixelmap into PBO */ |
| GLubyte *buf; |
| /* Note, need to use DefaultPacking and Pack's buffer object */ |
| ctx->DefaultPacking.BufferObj = ctx->Pack.BufferObj; |
| if (!_mesa_validate_pbo_access(1, &ctx->DefaultPacking, mapsize, 1, 1, |
| GL_INTENSITY, GL_UNSIGNED_SHORT, |
| values)) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glGetPixelMapusv(invalid PBO access)"); |
| return; |
| } |
| /* restore */ |
| ctx->DefaultPacking.BufferObj = ctx->Array.NullBufferObj; |
| buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT, |
| GL_WRITE_ONLY_ARB, |
| ctx->Pack.BufferObj); |
| if (!buf) { |
| /* buffer is already mapped - that's an error */ |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glGetPixelMapusv(PBO is mapped)"); |
| return; |
| } |
| values = (GLushort *) ADD_POINTERS(buf, values); |
| } |
| else if (!values) { |
| 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] ); |
| } |
| } |
| |
| if (ctx->Pack.BufferObj->Name) { |
| ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT, |
| ctx->Pack.BufferObj); |
| } |
| } |
| |
| |
| |
| /**********************************************************************/ |
| /***** glPixelTransfer *****/ |
| /**********************************************************************/ |
| |
| |
| /* |
| * Implements glPixelTransfer[fi] whether called immediately or from a |
| * display list. |
| */ |
| 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; |
| } |
| } |
| |
| |
| void GLAPIENTRY |
| _mesa_PixelTransferi( GLenum pname, GLint param ) |
| { |
| _mesa_PixelTransferf( pname, (GLfloat) param ); |
| } |
| |
| |
| |
| /**********************************************************************/ |
| /***** Pixel processing functions ******/ |
| /**********************************************************************/ |
| |
| /* |
| * Apply scale and bias factors to an array of RGBA pixels. |
| */ |
| void |
| _mesa_scale_and_bias_rgba(GLuint n, GLfloat rgba[][4], |
| GLfloat rScale, GLfloat gScale, |
| GLfloat bScale, GLfloat aScale, |
| GLfloat rBias, GLfloat gBias, |
| GLfloat bBias, GLfloat aBias) |
| { |
| if (rScale != 1.0 || rBias != 0.0) { |
| GLuint i; |
| for (i = 0; i < n; i++) { |
| rgba[i][RCOMP] = rgba[i][RCOMP] * rScale + rBias; |
| } |
| } |
| if (gScale != 1.0 || gBias != 0.0) { |
| GLuint i; |
| for (i = 0; i < n; i++) { |
| rgba[i][GCOMP] = rgba[i][GCOMP] * gScale + gBias; |
| } |
| } |
| if (bScale != 1.0 || bBias != 0.0) { |
| GLuint i; |
| for (i = 0; i < n; i++) { |
| rgba[i][BCOMP] = rgba[i][BCOMP] * bScale + bBias; |
| } |
| } |
| if (aScale != 1.0 || aBias != 0.0) { |
| GLuint i; |
| for (i = 0; i < n; i++) { |
| rgba[i][ACOMP] = rgba[i][ACOMP] * aScale + aBias; |
| } |
| } |
| } |
| |
| |
| /* |
| * Apply pixel mapping to an array of floating point RGBA pixels. |
| */ |
| void |
| _mesa_map_rgba( const GLcontext *ctx, GLuint n, GLfloat rgba[][4] ) |
| { |
| const GLfloat rscale = (GLfloat) (ctx->PixelMaps.RtoR.Size - 1); |
| const GLfloat gscale = (GLfloat) (ctx->PixelMaps.GtoG.Size - 1); |
| const GLfloat bscale = (GLfloat) (ctx->PixelMaps.BtoB.Size - 1); |
| const GLfloat ascale = (GLfloat) (ctx->PixelMaps.AtoA.Size - 1); |
| const GLfloat *rMap = ctx->PixelMaps.RtoR.Map; |
| const GLfloat *gMap = ctx->PixelMaps.GtoG.Map; |
| const GLfloat *bMap = ctx->PixelMaps.BtoB.Map; |
| const GLfloat *aMap = ctx->PixelMaps.AtoA.Map; |
| GLuint i; |
| for (i=0;i<n;i++) { |
| GLfloat r = CLAMP(rgba[i][RCOMP], 0.0F, 1.0F); |
| GLfloat g = CLAMP(rgba[i][GCOMP], 0.0F, 1.0F); |
| GLfloat b = CLAMP(rgba[i][BCOMP], 0.0F, 1.0F); |
| GLfloat a = CLAMP(rgba[i][ACOMP], 0.0F, 1.0F); |
| rgba[i][RCOMP] = rMap[IROUND(r * rscale)]; |
| rgba[i][GCOMP] = gMap[IROUND(g * gscale)]; |
| rgba[i][BCOMP] = bMap[IROUND(b * bscale)]; |
| rgba[i][ACOMP] = aMap[IROUND(a * ascale)]; |
| } |
| } |
| |
| |
| /* |
| * Apply the color matrix and post color matrix scaling and biasing. |
| */ |
| void |
| _mesa_transform_rgba(const GLcontext *ctx, GLuint n, GLfloat rgba[][4]) |
| { |
| const GLfloat rs = ctx->Pixel.PostColorMatrixScale[0]; |
| const GLfloat rb = ctx->Pixel.PostColorMatrixBias[0]; |
| const GLfloat gs = ctx->Pixel.PostColorMatrixScale[1]; |
| const GLfloat gb = ctx->Pixel.PostColorMatrixBias[1]; |
| const GLfloat bs = ctx->Pixel.PostColorMatrixScale[2]; |
| const GLfloat bb = ctx->Pixel.PostColorMatrixBias[2]; |
| const GLfloat as = ctx->Pixel.PostColorMatrixScale[3]; |
| const GLfloat ab = ctx->Pixel.PostColorMatrixBias[3]; |
| const GLfloat *m = ctx->ColorMatrixStack.Top->m; |
| GLuint i; |
| for (i = 0; i < n; i++) { |
| const GLfloat r = rgba[i][RCOMP]; |
| const GLfloat g = rgba[i][GCOMP]; |
| const GLfloat b = rgba[i][BCOMP]; |
| const GLfloat a = rgba[i][ACOMP]; |
| rgba[i][RCOMP] = (m[0] * r + m[4] * g + m[ 8] * b + m[12] * a) * rs + rb; |
| rgba[i][GCOMP] = (m[1] * r + m[5] * g + m[ 9] * b + m[13] * a) * gs + gb; |
| rgba[i][BCOMP] = (m[2] * r + m[6] * g + m[10] * b + m[14] * a) * bs + bb; |
| rgba[i][ACOMP] = (m[3] * r + m[7] * g + m[11] * b + m[15] * a) * as + ab; |
| } |
| } |
| |
| |
| /** |
| * Apply a color table lookup to an array of floating point RGBA colors. |
| */ |
| void |
| _mesa_lookup_rgba_float(const struct gl_color_table *table, |
| GLuint n, GLfloat rgba[][4]) |
| { |
| const GLint max = table->Size - 1; |
| const GLfloat scale = (GLfloat) max; |
| const GLfloat *lut = table->TableF; |
| GLuint i; |
| |
| if (!table->TableF || table->Size == 0) |
| return; |
| |
| switch (table->_BaseFormat) { |
| case GL_INTENSITY: |
| /* replace RGBA with I */ |
| for (i = 0; i < n; i++) { |
| GLint j = IROUND(rgba[i][RCOMP] * scale); |
| GLfloat c = lut[CLAMP(j, 0, max)]; |
| rgba[i][RCOMP] = |
| rgba[i][GCOMP] = |
| rgba[i][BCOMP] = |
| rgba[i][ACOMP] = c; |
| } |
| break; |
| case GL_LUMINANCE: |
| /* replace RGB with L */ |
| for (i = 0; i < n; i++) { |
| GLint j = IROUND(rgba[i][RCOMP] * scale); |
| GLfloat c = lut[CLAMP(j, 0, max)]; |
| rgba[i][RCOMP] = |
| rgba[i][GCOMP] = |
| rgba[i][BCOMP] = c; |
| } |
| break; |
| case GL_ALPHA: |
| /* replace A with A */ |
| for (i = 0; i < n; i++) { |
| GLint j = IROUND(rgba[i][ACOMP] * scale); |
| rgba[i][ACOMP] = lut[CLAMP(j, 0, max)]; |
| } |
| break; |
| case GL_LUMINANCE_ALPHA: |
| /* replace RGBA with LLLA */ |
| for (i = 0; i < n; i++) { |
| GLint jL = IROUND(rgba[i][RCOMP] * scale); |
| GLint jA = IROUND(rgba[i][ACOMP] * scale); |
| GLfloat luminance, alpha; |
| jL = CLAMP(jL, 0, max); |
| jA = CLAMP(jA, 0, max); |
| luminance = lut[jL * 2 + 0]; |
| alpha = lut[jA * 2 + 1]; |
| rgba[i][RCOMP] = |
| rgba[i][GCOMP] = |
| rgba[i][BCOMP] = luminance; |
| rgba[i][ACOMP] = alpha;; |
| } |
| break; |
| case GL_RGB: |
| /* replace RGB with RGB */ |
| for (i = 0; i < n; i++) { |
| GLint jR = IROUND(rgba[i][RCOMP] * scale); |
| GLint jG = IROUND(rgba[i][GCOMP] * scale); |
| GLint jB = IROUND(rgba[i][BCOMP] * scale); |
| jR = CLAMP(jR, 0, max); |
| jG = CLAMP(jG, 0, max); |
| jB = CLAMP(jB, 0, max); |
| rgba[i][RCOMP] = lut[jR * 3 + 0]; |
| rgba[i][GCOMP] = lut[jG * 3 + 1]; |
| rgba[i][BCOMP] = lut[jB * 3 + 2]; |
| } |
| break; |
| case GL_RGBA: |
| /* replace RGBA with RGBA */ |
| for (i = 0; i < n; i++) { |
| GLint jR = IROUND(rgba[i][RCOMP] * scale); |
| GLint jG = IROUND(rgba[i][GCOMP] * scale); |
| GLint jB = IROUND(rgba[i][BCOMP] * scale); |
| GLint jA = IROUND(rgba[i][ACOMP] * scale); |
| jR = CLAMP(jR, 0, max); |
| jG = CLAMP(jG, 0, max); |
| jB = CLAMP(jB, 0, max); |
| jA = CLAMP(jA, 0, max); |
| rgba[i][RCOMP] = lut[jR * 4 + 0]; |
| rgba[i][GCOMP] = lut[jG * 4 + 1]; |
| rgba[i][BCOMP] = lut[jB * 4 + 2]; |
| rgba[i][ACOMP] = lut[jA * 4 + 3]; |
| } |
| break; |
| default: |
| _mesa_problem(NULL, "Bad format in _mesa_lookup_rgba_float"); |
| return; |
| } |
| } |
| |
| |
| |
| /** |
| * Apply a color table lookup to an array of ubyte/RGBA colors. |
| */ |
| void |
| _mesa_lookup_rgba_ubyte(const struct gl_color_table *table, |
| GLuint n, GLubyte rgba[][4]) |
| { |
| const GLubyte *lut = table->TableUB; |
| const GLfloat scale = (GLfloat) (table->Size - 1) / 255.0; |
| GLuint i; |
| |
| if (!table->TableUB || table->Size == 0) |
| return; |
| |
| switch (table->_BaseFormat) { |
| case GL_INTENSITY: |
| /* replace RGBA with I */ |
| if (table->Size == 256) { |
| for (i = 0; i < n; i++) { |
| const GLubyte c = lut[rgba[i][RCOMP]]; |
| rgba[i][RCOMP] = |
| rgba[i][GCOMP] = |
| rgba[i][BCOMP] = |
| rgba[i][ACOMP] = c; |
| } |
| } |
| else { |
| for (i = 0; i < n; i++) { |
| GLint j = IROUND((GLfloat) rgba[i][RCOMP] * scale); |
| rgba[i][RCOMP] = |
| rgba[i][GCOMP] = |
| rgba[i][BCOMP] = |
| rgba[i][ACOMP] = lut[j]; |
| } |
| } |
| break; |
| case GL_LUMINANCE: |
| /* replace RGB with L */ |
| if (table->Size == 256) { |
| for (i = 0; i < n; i++) { |
| const GLubyte c = lut[rgba[i][RCOMP]]; |
| rgba[i][RCOMP] = |
| rgba[i][GCOMP] = |
| rgba[i][BCOMP] = c; |
| } |
| } |
| else { |
| for (i = 0; i < n; i++) { |
| GLint j = IROUND((GLfloat) rgba[i][RCOMP] * scale); |
| rgba[i][RCOMP] = |
| rgba[i][GCOMP] = |
| rgba[i][BCOMP] = lut[j]; |
| } |
| } |
| break; |
| case GL_ALPHA: |
| /* replace A with A */ |
| if (table->Size == 256) { |
| for (i = 0; i < n; i++) { |
| rgba[i][ACOMP] = lut[rgba[i][ACOMP]]; |
| } |
| } |
| else { |
| for (i = 0; i < n; i++) { |
| GLint j = IROUND((GLfloat) rgba[i][ACOMP] * scale); |
| rgba[i][ACOMP] = lut[j]; |
| } |
| } |
| break; |
| case GL_LUMINANCE_ALPHA: |
| /* replace RGBA with LLLA */ |
| if (table->Size == 256) { |
| for (i = 0; i < n; i++) { |
| GLubyte l = lut[rgba[i][RCOMP] * 2 + 0]; |
| GLubyte a = lut[rgba[i][ACOMP] * 2 + 1];; |
| rgba[i][RCOMP] = |
| rgba[i][GCOMP] = |
| rgba[i][BCOMP] = l; |
| rgba[i][ACOMP] = a; |
| } |
| } |
| else { |
| for (i = 0; i < n; i++) { |
| GLint jL = IROUND((GLfloat) rgba[i][RCOMP] * scale); |
| GLint jA = IROUND((GLfloat) rgba[i][ACOMP] * scale); |
| GLubyte luminance = lut[jL * 2 + 0]; |
| GLubyte alpha = lut[jA * 2 + 1]; |
| rgba[i][RCOMP] = |
| rgba[i][GCOMP] = |
| rgba[i][BCOMP] = luminance; |
| rgba[i][ACOMP] = alpha; |
| } |
| } |
| break; |
| case GL_RGB: |
| if (table->Size == 256) { |
| for (i = 0; i < n; i++) { |
| rgba[i][RCOMP] = lut[rgba[i][RCOMP] * 3 + 0]; |
| rgba[i][GCOMP] = lut[rgba[i][GCOMP] * 3 + 1]; |
| rgba[i][BCOMP] = lut[rgba[i][BCOMP] * 3 + 2]; |
| } |
| } |
| else { |
| for (i = 0; i < n; i++) { |
| GLint jR = IROUND((GLfloat) rgba[i][RCOMP] * scale); |
| GLint jG = IROUND((GLfloat) rgba[i][GCOMP] * scale); |
| GLint jB = IROUND((GLfloat) rgba[i][BCOMP] * scale); |
| rgba[i][RCOMP] = lut[jR * 3 + 0]; |
| rgba[i][GCOMP] = lut[jG * 3 + 1]; |
| rgba[i][BCOMP] = lut[jB * 3 + 2]; |
| } |
| } |
| break; |
| case GL_RGBA: |
| if (table->Size == 256) { |
| for (i = 0; i < n; i++) { |
| rgba[i][RCOMP] = lut[rgba[i][RCOMP] * 4 + 0]; |
| rgba[i][GCOMP] = lut[rgba[i][GCOMP] * 4 + 1]; |
| rgba[i][BCOMP] = lut[rgba[i][BCOMP] * 4 + 2]; |
| rgba[i][ACOMP] = lut[rgba[i][ACOMP] * 4 + 3]; |
| } |
| } |
| else { |
| for (i = 0; i < n; i++) { |
| GLint jR = IROUND((GLfloat) rgba[i][RCOMP] * scale); |
| GLint jG = IROUND((GLfloat) rgba[i][GCOMP] * scale); |
| GLint jB = IROUND((GLfloat) rgba[i][BCOMP] * scale); |
| GLint jA = IROUND((GLfloat) rgba[i][ACOMP] * scale); |
| CLAMPED_FLOAT_TO_CHAN(rgba[i][RCOMP], lut[jR * 4 + 0]); |
| CLAMPED_FLOAT_TO_CHAN(rgba[i][GCOMP], lut[jG * 4 + 1]); |
| CLAMPED_FLOAT_TO_CHAN(rgba[i][BCOMP], lut[jB * 4 + 2]); |
| CLAMPED_FLOAT_TO_CHAN(rgba[i][ACOMP], lut[jA * 4 + 3]); |
| } |
| } |
| break; |
| default: |
| _mesa_problem(NULL, "Bad format in _mesa_lookup_rgba_chan"); |
| return; |
| } |
| } |
| |
| |
| |
| /* |
| * Map color indexes to float rgba values. |
| */ |
| void |
| _mesa_map_ci_to_rgba( const GLcontext *ctx, GLuint n, |
| const GLuint index[], GLfloat rgba[][4] ) |
| { |
| GLuint rmask = ctx->PixelMaps.ItoR.Size - 1; |
| GLuint gmask = ctx->PixelMaps.ItoG.Size - 1; |
| GLuint bmask = ctx->PixelMaps.ItoB.Size - 1; |
| GLuint amask = ctx->PixelMaps.ItoA.Size - 1; |
| const GLfloat *rMap = ctx->PixelMaps.ItoR.Map; |
| const GLfloat *gMap = ctx->PixelMaps.ItoG.Map; |
| const GLfloat *bMap = ctx->PixelMaps.ItoB.Map; |
| const GLfloat *aMap = ctx->PixelMaps.ItoA.Map; |
| GLuint i; |
| for (i=0;i<n;i++) { |
| rgba[i][RCOMP] = rMap[index[i] & rmask]; |
| rgba[i][GCOMP] = gMap[index[i] & gmask]; |
| rgba[i][BCOMP] = bMap[index[i] & bmask]; |
| rgba[i][ACOMP] = aMap[index[i] & amask]; |
| } |
| } |
| |
| |
| /** |
| * Map ubyte color indexes to ubyte/RGBA values. |
| */ |
| void |
| _mesa_map_ci8_to_rgba8(const GLcontext *ctx, GLuint n, const GLubyte index[], |
| GLubyte rgba[][4]) |
| { |
| GLuint rmask = ctx->PixelMaps.ItoR.Size - 1; |
| GLuint gmask = ctx->PixelMaps.ItoG.Size - 1; |
| GLuint bmask = ctx->PixelMaps.ItoB.Size - 1; |
| GLuint amask = ctx->PixelMaps.ItoA.Size - 1; |
| const GLubyte *rMap = ctx->PixelMaps.ItoR.Map8; |
| const GLubyte *gMap = ctx->PixelMaps.ItoG.Map8; |
| const GLubyte *bMap = ctx->PixelMaps.ItoB.Map8; |
| const GLubyte *aMap = ctx->PixelMaps.ItoA.Map8; |
| GLuint i; |
| for (i=0;i<n;i++) { |
| rgba[i][RCOMP] = rMap[index[i] & rmask]; |
| rgba[i][GCOMP] = gMap[index[i] & gmask]; |
| rgba[i][BCOMP] = bMap[index[i] & bmask]; |
| rgba[i][ACOMP] = aMap[index[i] & amask]; |
| } |
| } |
| |
| |
| void |
| _mesa_scale_and_bias_depth(const GLcontext *ctx, GLuint n, |
| GLfloat depthValues[]) |
| { |
| const GLfloat scale = ctx->Pixel.DepthScale; |
| const GLfloat bias = ctx->Pixel.DepthBias; |
| GLuint i; |
| for (i = 0; i < n; i++) { |
| GLfloat d = depthValues[i] * scale + bias; |
| depthValues[i] = CLAMP(d, 0.0F, 1.0F); |
| } |
| } |
| |
| |
| |
| /**********************************************************************/ |
| /***** 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; |
| } |
| |
| |
| 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 & _IMAGE_NEW_TRANSFER_STATE) |
| update_image_transfer_state(ctx); |
| } |
| |
| |
| /**********************************************************************/ |
| /***** 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); |
| |
| /* Pixel transfer */ |
| ctx->Pack.Alignment = 4; |
| ctx->Pack.RowLength = 0; |
| ctx->Pack.ImageHeight = 0; |
| ctx->Pack.SkipPixels = 0; |
| ctx->Pack.SkipRows = 0; |
| ctx->Pack.SkipImages = 0; |
| ctx->Pack.SwapBytes = GL_FALSE; |
| ctx->Pack.LsbFirst = GL_FALSE; |
| ctx->Pack.ClientStorage = GL_FALSE; |
| ctx->Pack.Invert = GL_FALSE; |
| #if FEATURE_EXT_pixel_buffer_object |
| ctx->Pack.BufferObj = ctx->Array.NullBufferObj; |
| #endif |
| ctx->Unpack.Alignment = 4; |
| ctx->Unpack.RowLength = 0; |
| ctx->Unpack.ImageHeight = 0; |
| ctx->Unpack.SkipPixels = 0; |
| ctx->Unpack.SkipRows = 0; |
| ctx->Unpack.SkipImages = 0; |
| ctx->Unpack.SwapBytes = GL_FALSE; |
| ctx->Unpack.LsbFirst = GL_FALSE; |
| ctx->Unpack.ClientStorage = GL_FALSE; |
| ctx->Unpack.Invert = GL_FALSE; |
| #if FEATURE_EXT_pixel_buffer_object |
| ctx->Unpack.BufferObj = ctx->Array.NullBufferObj; |
| #endif |
| |
| /* |
| * _mesa_unpack_image() returns image data in this format. When we |
| * execute image commands (glDrawPixels(), glTexImage(), etc) from |
| * within display lists we have to be sure to set the current |
| * unpacking parameters to these values! |
| */ |
| ctx->DefaultPacking.Alignment = 1; |
| ctx->DefaultPacking.RowLength = 0; |
| ctx->DefaultPacking.SkipPixels = 0; |
| ctx->DefaultPacking.SkipRows = 0; |
| ctx->DefaultPacking.ImageHeight = 0; |
| ctx->DefaultPacking.SkipImages = 0; |
| ctx->DefaultPacking.SwapBytes = GL_FALSE; |
| ctx->DefaultPacking.LsbFirst = GL_FALSE; |
| ctx->DefaultPacking.ClientStorage = GL_FALSE; |
| ctx->DefaultPacking.Invert = GL_FALSE; |
| #if FEATURE_EXT_pixel_buffer_object |
| ctx->DefaultPacking.BufferObj = ctx->Array.NullBufferObj; |
| #endif |
| |
| if (ctx->Visual.doubleBufferMode) { |
| ctx->Pixel.ReadBuffer = GL_BACK; |
| } |
| else { |
| ctx->Pixel.ReadBuffer = GL_FRONT; |
| } |
| |
| /* Miscellaneous */ |
| ctx->_ImageTransferState = 0; |
| } |
