diff options
Diffstat (limited to 'src/mesa/main/pixel.c')
| -rw-r--r-- | src/mesa/main/pixel.c | 77 |
1 files changed, 74 insertions, 3 deletions
diff --git a/src/mesa/main/pixel.c b/src/mesa/main/pixel.c index 1651fe1190c..213aa2c8944 100644 --- a/src/mesa/main/pixel.c +++ b/src/mesa/main/pixel.c @@ -1,4 +1,4 @@ -/* $Id: pixel.c,v 1.5 1999/11/11 01:22:27 brianp Exp $ */ +/* $Id: pixel.c,v 1.6 2000/04/08 18:57:45 brianp Exp $ */ /* * Mesa 3-D graphics library @@ -562,6 +562,30 @@ _mesa_PixelTransferf( GLenum pname, GLfloat param ) case GL_DEPTH_BIAS: ctx->Pixel.DepthBias = param; break; + case GL_POST_COLOR_MATRIX_RED_SCALE: + ctx->Pixel.PostColorMatrixRedScale = param; + break; + case GL_POST_COLOR_MATRIX_RED_BIAS: + ctx->Pixel.PostColorMatrixRedBias = param; + break; + case GL_POST_COLOR_MATRIX_GREEN_SCALE: + ctx->Pixel.PostColorMatrixGreenScale = param; + break; + case GL_POST_COLOR_MATRIX_GREEN_BIAS: + ctx->Pixel.PostColorMatrixGreenBias = param; + break; + case GL_POST_COLOR_MATRIX_BLUE_SCALE: + ctx->Pixel.PostColorMatrixBlueScale = param; + break; + case GL_POST_COLOR_MATRIX_BLUE_BIAS: + ctx->Pixel.PostColorMatrixBlueBias = param; + break; + case GL_POST_COLOR_MATRIX_ALPHA_SCALE: + ctx->Pixel.PostColorMatrixAlphaScale = param; + break; + case GL_POST_COLOR_MATRIX_ALPHA_BIAS: + ctx->Pixel.PostColorMatrixAlphaBias = param; + break; default: gl_error( ctx, GL_INVALID_ENUM, "glPixelTransfer(pname)" ); return; @@ -576,6 +600,20 @@ _mesa_PixelTransferf( GLenum pname, GLfloat param ) else { ctx->Pixel.ScaleOrBiasRGBA = GL_FALSE; } + + if (ctx->Pixel.PostColorMatrixRedScale!=1.0F || + ctx->Pixel.PostColorMatrixRedBias!=0.0F || + ctx->Pixel.PostColorMatrixGreenScale!=1.0F || + ctx->Pixel.PostColorMatrixGreenBias!=0.0F || + ctx->Pixel.PostColorMatrixBlueScale!=1.0F || + ctx->Pixel.PostColorMatrixBlueBias!=0.0F || + ctx->Pixel.PostColorMatrixAlphaScale!=1.0F || + ctx->Pixel.PostColorMatrixAlphaBias!=0.0F) { + ctx->Pixel.ScaleOrBiasRGBApcm = GL_TRUE; + } + else { + ctx->Pixel.ScaleOrBiasRGBApcm = GL_FALSE; + } } @@ -640,7 +678,9 @@ void gl_scale_and_bias_rgba( const GLcontext *ctx, GLuint n, GLubyte rgba[][4] ) /* * Apply scale and bias factors to an array of RGBA pixels. */ -void gl_scale_and_bias_rgba_float( const GLcontext *ctx, GLuint n, GLfloat rgba[][4] ) +void +_mesa_scale_and_bias_rgba_float(const GLcontext *ctx, GLuint n, + GLfloat rgba[][4]) { if (ctx->Pixel.RedScale != 1.0 || ctx->Pixel.RedBias != 0.0) { const GLfloat scale = ctx->Pixel.RedScale; @@ -703,7 +743,8 @@ void gl_map_rgba( const GLcontext *ctx, GLuint n, GLubyte rgba[][4] ) /* * Apply pixel mapping to an array of floating point RGBA pixels. */ -void gl_map_rgba_float( const GLcontext *ctx, GLuint n, GLfloat rgba[][4] ) +void +_mesa_map_rgba_float( const GLcontext *ctx, GLuint n, GLfloat rgba[][4] ) { const GLfloat rscale = ctx->Pixel.MapRtoRsize - 1; const GLfloat gscale = ctx->Pixel.MapGtoGsize - 1; @@ -724,6 +765,36 @@ void gl_map_rgba_float( const GLcontext *ctx, GLuint n, GLfloat rgba[][4] ) /* + * 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.PostColorMatrixRedScale; + const GLfloat rb = ctx->Pixel.PostColorMatrixRedBias; + const GLfloat gs = ctx->Pixel.PostColorMatrixGreenScale; + const GLfloat gb = ctx->Pixel.PostColorMatrixGreenBias; + const GLfloat bs = ctx->Pixel.PostColorMatrixBlueScale; + const GLfloat bb = ctx->Pixel.PostColorMatrixBlueBias; + const GLfloat as = ctx->Pixel.PostColorMatrixAlphaScale; + const GLfloat ab = ctx->Pixel.PostColorMatrixAlphaBias; + const GLfloat *m = ctx->ColorMatrix.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 pixel mapping to an array of RGBA pixels. */ void gl_map_color( const GLcontext *ctx, GLuint n, |