From 456734aa0a6da47ad586f2ec021a429526e3152a Mon Sep 17 00:00:00 2001 From: Brian Paul Date: Sat, 28 Feb 2004 19:58:19 +0000 Subject: [PATCH] consolidate some code --- src/mesa/main/colortab.c | 264 ++++++++++++++++++++++------------------------- 1 file changed, 126 insertions(+), 138 deletions(-) diff --git a/src/mesa/main/colortab.c b/src/mesa/main/colortab.c index d0fa323c39b..ac1d17cd6c5 100644 --- a/src/mesa/main/colortab.c +++ b/src/mesa/main/colortab.c @@ -171,6 +171,107 @@ set_component_sizes( struct gl_color_table *table ) +/** + * Update/replace all or part of a color table. Helper function + * used by _mesa_ColorTable() and _mesa_ColorSubTable(). + * The table->Table buffer should already be allocated. + * \param start - first entry to update + * \param count - number of entries to update + * \param format - format of user-provided table data + * \param type - datatype of user-provided table data + * \param data - user-provided table data + * \param [rgba]Scale - RGBA scale factors + * \param [rgba]Bias - RGBA bias factors + */ +static void +store_colortable_entries(GLcontext *ctx, struct gl_color_table *table, + GLsizei start, GLsizei count, + GLenum format, GLenum type, const GLvoid *data, + GLfloat rScale, GLfloat rBias, + GLfloat gScale, GLfloat gBias, + GLfloat bScale, GLfloat bBias, + GLfloat aScale, GLfloat aBias) +{ + if (table->Type == GL_FLOAT) { + /* convert user-provided data to GLfloat values */ + GLfloat tempTab[MAX_COLOR_TABLE_SIZE * 4]; + GLfloat *tableF; + GLint i; + + _mesa_unpack_float_color_span(ctx, + count, /* number of pixels */ + table->Format, /* dest format */ + tempTab, /* dest address */ + format, type, data, /* src data */ + &ctx->Unpack, + 0, /* transfer ops */ + GL_FALSE); /* clamping */ + + tableF = (GLfloat *) table->Table; + + switch (table->Format) { + case GL_INTENSITY: + for (i = 0; i < count; i++) { + GLuint j = start + i; + tableF[j] = CLAMP(tempTab[i] * rScale + rBias, 0.0F, 1.0F); + } + break; + case GL_LUMINANCE: + for (i = 0; i < count; i++) { + GLuint j = start + i; + tableF[j] = CLAMP(tempTab[i] * rScale + rBias, 0.0F, 1.0F); + } + break; + case GL_ALPHA: + for (i = 0; i < count; i++) { + GLuint j = start + i; + tableF[j] = CLAMP(tempTab[i] * aScale + aBias, 0.0F, 1.0F); + } + break; + case GL_LUMINANCE_ALPHA: + for (i = 0; i < count; i++) { + GLuint j = start + i; + tableF[j*2+0] = CLAMP(tempTab[i*2+0] * rScale + rBias, 0.0F, 1.0F); + tableF[j*2+1] = CLAMP(tempTab[i*2+1] * aScale + aBias, 0.0F, 1.0F); + } + break; + case GL_RGB: + for (i = 0; i < count; i++) { + GLuint j = start + i; + tableF[j*3+0] = CLAMP(tempTab[i*3+0] * rScale + rBias, 0.0F, 1.0F); + tableF[j*3+1] = CLAMP(tempTab[i*3+1] * gScale + gBias, 0.0F, 1.0F); + tableF[j*3+2] = CLAMP(tempTab[i*3+2] * bScale + bBias, 0.0F, 1.0F); + } + break; + case GL_RGBA: + for (i = 0; i < count; i++) { + GLuint j = start + i; + tableF[j*4+0] = CLAMP(tempTab[i*4+0] * rScale + rBias, 0.0F, 1.0F); + tableF[j*4+1] = CLAMP(tempTab[i*4+1] * gScale + gBias, 0.0F, 1.0F); + tableF[j*4+2] = CLAMP(tempTab[i*4+2] * bScale + bBias, 0.0F, 1.0F); + tableF[j*4+3] = CLAMP(tempTab[i*4+3] * aScale + aBias, 0.0F, 1.0F); + } + break; + default: + _mesa_problem(ctx, "Bad format in store_colortable_entries"); + return; + } + } + else { + /* non-float (GLchan) */ + const GLint comps = _mesa_components_in_format(table->Format); + GLchan *dest = (GLchan *) table->Table + start * comps; + _mesa_unpack_chan_color_span(ctx, count, /* number of entries */ + table->Format, /* dest format */ + dest, /* dest address */ + format, type, data, /* src data */ + &ctx->Unpack, + 0); /* transfer ops */ + } +} + + + void GLAPIENTRY _mesa_ColorTable( GLenum target, GLenum internalFormat, GLsizei width, GLenum format, GLenum type, @@ -365,82 +466,30 @@ _mesa_ColorTable( GLenum target, GLenum internalFormat, FREE(table->Table); table->Table = NULL; } + if (width > 0) { if (tableType == GL_FLOAT) { - GLfloat tempTab[MAX_COLOR_TABLE_SIZE * 4]; - GLfloat *tableF; - GLint i; - - _mesa_unpack_float_color_span(ctx, width, table->Format, - tempTab, /* dest */ - format, type, data, &ctx->Unpack, - 0, GL_FALSE); - table->Type = GL_FLOAT; - table->Table = MALLOC(comps * width * sizeof(GLfloat)); - if (!table->Table) { - _mesa_error(ctx, GL_OUT_OF_MEMORY, "glColorTable"); - return; - } - - tableF = (GLfloat *) table->Table; - - switch (table->Format) { - case GL_INTENSITY: - for (i = 0; i < width; i++) { - tableF[i] = CLAMP(tempTab[i] * rScale + rBias, 0.0F, 1.0F); - } - break; - case GL_LUMINANCE: - for (i = 0; i < width; i++) { - tableF[i] = CLAMP(tempTab[i] * rScale + rBias, 0.0F, 1.0F); - } - break; - case GL_ALPHA: - for (i = 0; i < width; i++) { - tableF[i] = CLAMP(tempTab[i] * aScale + aBias, 0.0F, 1.0F); - } - break; - case GL_LUMINANCE_ALPHA: - for (i = 0; i < width; i++) { - tableF[i*2+0] = CLAMP(tempTab[i*2+0] * rScale + rBias, 0.0F, 1.0F); - tableF[i*2+1] = CLAMP(tempTab[i*2+1] * aScale + aBias, 0.0F, 1.0F); - } - break; - case GL_RGB: - for (i = 0; i < width; i++) { - tableF[i*3+0] = CLAMP(tempTab[i*3+0] * rScale + rBias, 0.0F, 1.0F); - tableF[i*3+1] = CLAMP(tempTab[i*3+1] * gScale + gBias, 0.0F, 1.0F); - tableF[i*3+2] = CLAMP(tempTab[i*3+2] * bScale + bBias, 0.0F, 1.0F); - } - break; - case GL_RGBA: - for (i = 0; i < width; i++) { - tableF[i*4+0] = CLAMP(tempTab[i*4+0] * rScale + rBias, 0.0F, 1.0F); - tableF[i*4+1] = CLAMP(tempTab[i*4+1] * gScale + gBias, 0.0F, 1.0F); - tableF[i*4+2] = CLAMP(tempTab[i*4+2] * bScale + bBias, 0.0F, 1.0F); - tableF[i*4+3] = CLAMP(tempTab[i*4+3] * aScale + aBias, 0.0F, 1.0F); - } - break; - default: - _mesa_problem(ctx, "Bad format in _mesa_ColorTable"); - return; - } - } - else { - /* store GLchan table */ + table->Table = MALLOC(comps * width * sizeof(GLfloat)); + } + else { table->Type = CHAN_TYPE; table->Table = MALLOC(comps * width * sizeof(GLchan)); - if (!table->Table) { - _mesa_error(ctx, GL_OUT_OF_MEMORY, "glColorTable"); - return; - } - _mesa_unpack_chan_color_span(ctx, width, table->Format, - (GLchan *) table->Table, /* dest */ - format, type, data, - &ctx->Unpack, 0); - } /* type==GL_FLOAT */ - } /* width > 0 */ + } + + if (!table->Table) { + _mesa_error(ctx, GL_OUT_OF_MEMORY, "glColorTable"); + return; + } + + store_colortable_entries(ctx, table, + 0, width, /* start, count */ + format, type, data, + rScale, rBias, + gScale, gBias, + bScale, bBias, + aScale, aBias); + } } /* proxy */ if (texObj || target == GL_SHARED_TEXTURE_PALETTE_EXT) { @@ -572,73 +621,12 @@ _mesa_ColorSubTable( GLenum target, GLsizei start, return; } - if (table->Type != GL_FLOAT) { - GLchan *dest = (GLchan *) table->Table + start * comps * sizeof(GLchan); - _mesa_unpack_chan_color_span(ctx, count, table->Format, dest, - format, type, data, &ctx->Unpack, 0); - } - else { - GLfloat tempTab[MAX_COLOR_TABLE_SIZE * 4]; - GLfloat *tableF; - GLint i; - - ASSERT(table->Type == GL_FLOAT); - - _mesa_unpack_float_color_span(ctx, count, table->Format, - tempTab, /* dest */ - format, type, data, &ctx->Unpack, - 0, GL_FALSE); - - tableF = (GLfloat *) table->Table; - - switch (table->Format) { - case GL_INTENSITY: - for (i = 0; i < count; i++) { - GLuint j = start + i; - tableF[j] = CLAMP(tempTab[i] * rScale + rBias, 0.0F, 1.0F); - } - break; - case GL_LUMINANCE: - for (i = 0; i < count; i++) { - GLuint j = start + i; - tableF[j] = CLAMP(tempTab[i] * rScale + rBias, 0.0F, 1.0F); - } - break; - case GL_ALPHA: - for (i = 0; i < count; i++) { - GLuint j = start + i; - tableF[j] = CLAMP(tempTab[i] * aScale + aBias, 0.0F, 1.0F); - } - break; - case GL_LUMINANCE_ALPHA: - for (i = 0; i < count; i++) { - GLuint j = start + i; - tableF[j*2+0] = CLAMP(tempTab[i*2+0] * rScale + rBias, 0.0F, 1.0F); - tableF[j*2+1] = CLAMP(tempTab[i*2+1] * aScale + aBias, 0.0F, 1.0F); - } - break; - case GL_RGB: - for (i = 0; i < count; i++) { - GLuint j = start + i; - tableF[j*3+0] = CLAMP(tempTab[i*3+0] * rScale + rBias, 0.0F, 1.0F); - tableF[j*3+1] = CLAMP(tempTab[i*3+1] * gScale + gBias, 0.0F, 1.0F); - tableF[j*3+2] = CLAMP(tempTab[i*3+2] * bScale + bBias, 0.0F, 1.0F); - } - break; - case GL_RGBA: - for (i = 0; i < count; i++) { - GLuint j = start + i; - tableF[j*4+0] = CLAMP(tempTab[i*4+0] * rScale + rBias, 0.0F, 1.0F); - tableF[j*4+1] = CLAMP(tempTab[i*4+1] * gScale + gBias, 0.0F, 1.0F); - tableF[j*4+2] = CLAMP(tempTab[i*4+2] * bScale + bBias, 0.0F, 1.0F); - tableF[j*4+3] = CLAMP(tempTab[i*4+3] * aScale + aBias, 0.0F, 1.0F); - } - break; - default: - _mesa_problem(ctx, "Bad format in _mesa_ColorSubTable"); - return; - } - } + store_colortable_entries(ctx, table, start, count, + format, type, data, + rScale, rBias, + gScale, gBias, + bScale, bBias, + aScale, aBias); if (texObj || target == GL_SHARED_TEXTURE_PALETTE_EXT) { /* per-texture object palette */ -- 2.11.0