diff options
Diffstat (limited to 'src/mesa/main/pixel.c')
| -rw-r--r-- | src/mesa/main/pixel.c | 433 |
1 files changed, 11 insertions, 422 deletions
diff --git a/src/mesa/main/pixel.c b/src/mesa/main/pixel.c index f14b225c1dc..c9c4289f699 100644 --- a/src/mesa/main/pixel.c +++ b/src/mesa/main/pixel.c @@ -1,8 +1,8 @@ /* * Mesa 3-D graphics library - * Version: 6.5.3 + * Version: 7.1 * - * Copyright (C) 1999-2007 Brian Paul All Rights Reserved. + * 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"), @@ -22,6 +22,12 @@ * 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" @@ -742,426 +748,6 @@ _mesa_PixelTransferi( GLenum pname, GLint 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) / (GLfloat)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); - } -} - - -void -_mesa_scale_and_bias_depth_uint(const GLcontext *ctx, GLuint n, - GLuint depthValues[]) -{ - const GLdouble max = (double) 0xffffffff; - const GLdouble scale = ctx->Pixel.DepthScale; - const GLdouble bias = ctx->Pixel.DepthBias * max; - GLuint i; - for (i = 0; i < n; i++) { - GLdouble d = (GLdouble) depthValues[i] * scale + bias; - d = CLAMP(d, 0.0, max); - depthValues[i] = (GLuint) d; - } -} - - -/**********************************************************************/ /***** State Management *****/ /**********************************************************************/ @@ -1232,6 +818,9 @@ update_image_transfer_state(GLcontext *ctx) } +/** + * Update meas pixel transfer derived state. + */ void _mesa_update_pixel( GLcontext *ctx, GLuint new_state ) { if (new_state & _NEW_COLOR_MATRIX) |