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Diffstat (limited to 'src/mesa/main/colortab.c')
-rw-r--r--src/mesa/main/colortab.c312
1 files changed, 312 insertions, 0 deletions
diff --git a/src/mesa/main/colortab.c b/src/mesa/main/colortab.c
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+++ b/src/mesa/main/colortab.c
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+/* $Id: colortab.c,v 1.1 1999/08/19 00:55:41 jtg Exp $ */
+
+/*
+ * Mesa 3-D graphics library
+ * Version: 3.1
+ *
+ * Copyright (C) 1999 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.
+ */
+
+
+
+
+
+#ifdef PC_HEADER
+#include "all.h"
+#else
+#include "colortab.h"
+#include "context.h"
+#include "macros.h"
+#ifdef XFree86Server
+#include "GL/xf86glx.h"
+#endif
+#endif
+
+
+
+/*
+ * Return GL_TRUE if k is a power of two, else return GL_FALSE.
+ */
+static GLboolean power_of_two( GLint k )
+{
+ GLint i, m = 1;
+ for (i=0; i<32; i++) {
+ if (k == m)
+ return GL_TRUE;
+ m = m << 1;
+ }
+ return GL_FALSE;
+}
+
+
+static GLint decode_internal_format( GLint format )
+{
+ switch (format) {
+ case GL_ALPHA:
+ case GL_ALPHA4:
+ case GL_ALPHA8:
+ case GL_ALPHA12:
+ case GL_ALPHA16:
+ return GL_ALPHA;
+ case 1:
+ case GL_LUMINANCE:
+ case GL_LUMINANCE4:
+ case GL_LUMINANCE8:
+ case GL_LUMINANCE12:
+ case GL_LUMINANCE16:
+ return GL_LUMINANCE;
+ case 2:
+ case GL_LUMINANCE_ALPHA:
+ case GL_LUMINANCE4_ALPHA4:
+ case GL_LUMINANCE6_ALPHA2:
+ case GL_LUMINANCE8_ALPHA8:
+ case GL_LUMINANCE12_ALPHA4:
+ case GL_LUMINANCE12_ALPHA12:
+ case GL_LUMINANCE16_ALPHA16:
+ return GL_LUMINANCE_ALPHA;
+ case GL_INTENSITY:
+ case GL_INTENSITY4:
+ case GL_INTENSITY8:
+ case GL_INTENSITY12:
+ case GL_INTENSITY16:
+ return GL_INTENSITY;
+ case 3:
+ case GL_RGB:
+ case GL_R3_G3_B2:
+ case GL_RGB4:
+ case GL_RGB5:
+ case GL_RGB8:
+ case GL_RGB10:
+ case GL_RGB12:
+ case GL_RGB16:
+ return GL_RGB;
+ case 4:
+ case GL_RGBA:
+ case GL_RGBA2:
+ case GL_RGBA4:
+ case GL_RGB5_A1:
+ case GL_RGBA8:
+ case GL_RGB10_A2:
+ case GL_RGBA12:
+ case GL_RGBA16:
+ return GL_RGBA;
+ default:
+ return -1; /* error */
+ }
+}
+
+
+void gl_ColorTable( GLcontext *ctx, GLenum target,
+ GLenum internalFormat, struct gl_image *table )
+{
+ struct gl_texture_unit *texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
+ struct gl_texture_object *texObj;
+ GLboolean proxy = GL_FALSE;
+
+ ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glColorTable");
+
+ if (decode_internal_format(internalFormat) < 0) {
+ gl_error( ctx, GL_INVALID_ENUM, "glColorTable(internalFormat)" );
+ return;
+ }
+
+ switch (target) {
+ case GL_TEXTURE_1D:
+ texObj = texUnit->CurrentD[1];
+ break;
+ case GL_TEXTURE_2D:
+ texObj = texUnit->CurrentD[2];
+ break;
+ case GL_TEXTURE_3D_EXT:
+ texObj = texUnit->CurrentD[3];
+ break;
+ case GL_PROXY_TEXTURE_1D:
+ texObj = ctx->Texture.Proxy1D;
+ proxy = GL_TRUE;
+ break;
+ case GL_PROXY_TEXTURE_2D:
+ texObj = ctx->Texture.Proxy2D;
+ proxy = GL_TRUE;
+ break;
+ case GL_PROXY_TEXTURE_3D_EXT:
+ texObj = ctx->Texture.Proxy3D;
+ proxy = GL_TRUE;
+ break;
+ case GL_SHARED_TEXTURE_PALETTE_EXT:
+ texObj = NULL;
+ break;
+ default:
+ gl_error(ctx, GL_INVALID_ENUM, "glColorTableEXT(target)");
+ return;
+ }
+
+ /* internalformat = just like glTexImage */
+
+ if (table->Width < 1 || table->Width > MAX_TEXTURE_PALETTE_SIZE
+ || !power_of_two(table->Width)) {
+ gl_error(ctx, GL_INVALID_VALUE, "glColorTableEXT(width)");
+ if (proxy) {
+ texObj->PaletteSize = 0;
+ texObj->PaletteIntFormat = (GLenum) 0;
+ texObj->PaletteFormat = (GLenum) 0;
+ }
+ return;
+ }
+
+ if (texObj) {
+ /* per-texture object palette */
+ texObj->PaletteSize = table->Width;
+ texObj->PaletteIntFormat = internalFormat;
+ texObj->PaletteFormat = (GLenum) decode_internal_format(internalFormat);
+ if (!proxy) {
+ MEMCPY(texObj->Palette, table->Data, table->Width*table->Components);
+ if (ctx->Driver.UpdateTexturePalette) {
+ (*ctx->Driver.UpdateTexturePalette)( ctx, texObj );
+ }
+ }
+ }
+ else {
+ /* shared texture palette */
+ ctx->Texture.PaletteSize = table->Width;
+ ctx->Texture.PaletteIntFormat = internalFormat;
+ ctx->Texture.PaletteFormat = (GLenum) decode_internal_format(internalFormat);
+ MEMCPY(ctx->Texture.Palette, table->Data, table->Width*table->Components);
+ if (ctx->Driver.UpdateTexturePalette) {
+ (*ctx->Driver.UpdateTexturePalette)( ctx, NULL );
+ }
+ }
+}
+
+
+
+void gl_ColorSubTable( GLcontext *ctx, GLenum target,
+ GLsizei start, struct gl_image *data )
+{
+ /* XXX TODO */
+ gl_problem(ctx, "glColorSubTableEXT not implemented");
+ (void) target;
+ (void) start;
+ (void) data;
+}
+
+
+
+void gl_GetColorTable( GLcontext *ctx, GLenum target, GLenum format,
+ GLenum type, GLvoid *table )
+{
+ ASSERT_OUTSIDE_BEGIN_END(ctx, "glGetBooleanv");
+
+ switch (target) {
+ case GL_TEXTURE_1D:
+ break;
+ case GL_TEXTURE_2D:
+ break;
+ case GL_TEXTURE_3D_EXT:
+ break;
+ case GL_SHARED_TEXTURE_PALETTE_EXT:
+ break;
+ default:
+ gl_error(ctx, GL_INVALID_ENUM, "glGetColorTableEXT(target)");
+ return;
+ }
+
+ gl_problem(ctx, "glGetColorTableEXT not implemented!");
+ (void) format;
+ (void) type;
+ (void) table;
+}
+
+
+
+void gl_GetColorTableParameterfv( GLcontext *ctx, GLenum target,
+ GLenum pname, GLfloat *params )
+{
+ GLint iparams[10];
+
+ gl_GetColorTableParameteriv( ctx, target, pname, iparams );
+ *params = (GLfloat) iparams[0];
+}
+
+
+
+void gl_GetColorTableParameteriv( GLcontext *ctx, GLenum target,
+ GLenum pname, GLint *params )
+{
+ struct gl_texture_unit *texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
+ struct gl_texture_object *texObj;
+
+ ASSERT_OUTSIDE_BEGIN_END(ctx, "glGetColorTableParameter");
+
+ switch (target) {
+ case GL_TEXTURE_1D:
+ texObj = texUnit->CurrentD[1];
+ break;
+ case GL_TEXTURE_2D:
+ texObj = texUnit->CurrentD[2];
+ break;
+ case GL_TEXTURE_3D_EXT:
+ texObj = texUnit->CurrentD[3];
+ break;
+ case GL_SHARED_TEXTURE_PALETTE_EXT:
+ texObj = NULL;
+ break;
+ default:
+ gl_error(ctx, GL_INVALID_ENUM, "glGetColorTableParameter(target)");
+ return;
+ }
+
+ switch (pname) {
+ case GL_COLOR_TABLE_FORMAT_EXT:
+ if (texObj)
+ *params = texObj->PaletteIntFormat;
+ else
+ *params = ctx->Texture.PaletteIntFormat;
+ break;
+ case GL_COLOR_TABLE_WIDTH_EXT:
+ if (texObj)
+ *params = texObj->PaletteSize;
+ else
+ *params = ctx->Texture.PaletteSize;
+ break;
+ case GL_COLOR_TABLE_RED_SIZE_EXT:
+ *params = 8;
+ break;
+ case GL_COLOR_TABLE_GREEN_SIZE_EXT:
+ *params = 8;
+ break;
+ case GL_COLOR_TABLE_BLUE_SIZE_EXT:
+ *params = 8;
+ break;
+ case GL_COLOR_TABLE_ALPHA_SIZE_EXT:
+ *params = 8;
+ break;
+ case GL_COLOR_TABLE_LUMINANCE_SIZE_EXT:
+ *params = 8;
+ break;
+ case GL_COLOR_TABLE_INTENSITY_SIZE_EXT:
+ *params = 8;
+ break;
+ default:
+ gl_error(ctx, GL_INVALID_ENUM, "glGetColorTableParameter" );
+ return;
+ }
+}
+
+
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