static void GLAPIENTRY
_mesa_GetHistogram(GLenum target, GLboolean reset, GLenum format, GLenum type, GLvoid *values)
{
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
if (!ctx->Extensions.EXT_histogram && !ctx->Extensions.ARB_imaging) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glGetHistogram");
return;
}
if (target != GL_HISTOGRAM) {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetHistogram(target)");
return;
}
if (format != GL_RED &&
format != GL_GREEN &&
format != GL_BLUE &&
format != GL_ALPHA &&
format != GL_RGB &&
format != GL_BGR &&
format != GL_RGBA &&
format != GL_BGRA &&
format != GL_ABGR_EXT &&
format != GL_LUMINANCE &&
format != GL_LUMINANCE_ALPHA) {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetHistogram(format)");
}
if (!_mesa_is_legal_format_and_type(ctx, format, type)) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glGetHistogram(format or type)");
return;
}
values = _mesa_map_validate_pbo_dest(ctx, 1, &ctx->Pack,
ctx->Histogram.Width, 1, 1,
format, type, values,
"glGetHistogram");
if (!values)
return;
pack_histogram(ctx, ctx->Histogram.Width,
(CONST GLuint (*)[4]) ctx->Histogram.Count,
format, type, values, &ctx->Pack);
_mesa_unmap_pbo_dest(ctx, &ctx->Pack);
if (reset) {
GLuint i;
for (i = 0; i < HISTOGRAM_TABLE_SIZE; i++) {
ctx->Histogram.Count[i][0] = 0;
ctx->Histogram.Count[i][1] = 0;
ctx->Histogram.Count[i][2] = 0;
ctx->Histogram.Count[i][3] = 0;
}
}
}
void
_mesa_GetSeparableFilter(GLenum target, GLenum format, GLenum type, GLvoid *row, GLvoid *column, GLvoid *span)
{
const GLint colStart = MAX_CONVOLUTION_WIDTH * 4;
const struct gl_convolution_attrib *filter;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (ctx->NewState) {
_mesa_update_state(ctx);
}
if (target != GL_SEPARABLE_2D) {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetSeparableFilter(target)");
return;
}
if (!_mesa_is_legal_format_and_type(format, type)) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glGetConvolutionFilter(format or type)");
return;
}
if (format == GL_COLOR_INDEX ||
format == GL_STENCIL_INDEX ||
format == GL_DEPTH_COMPONENT ||
format == GL_INTENSITY ||
type == GL_BITMAP) {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetConvolutionFilter(format or type)");
return;
}
filter = &ctx->Separable2D;
/* Row filter */
{
GLvoid *dst = _mesa_image_address( &ctx->Pack, row, filter->Width,
filter->Height, format, type,
0, 0, 0);
_mesa_pack_float_rgba_span(ctx, filter->Width,
(const GLfloat (*)[4]) filter->Filter,
format, type, dst, &ctx->Pack, 0);
}
/* Column filter */
{
GLvoid *dst = _mesa_image_address( &ctx->Pack, column, filter->Width,
1, format, type,
0, 0, 0);
const GLfloat *src = filter->Filter + colStart;
_mesa_pack_float_rgba_span(ctx, filter->Height,
(const GLfloat (*)[4]) src,
format, type, dst, &ctx->Pack, 0);
}
(void) span; /* unused at this time */
}
void
_mesa_GetConvolutionFilter(GLenum target, GLenum format, GLenum type, GLvoid *image)
{
const struct gl_convolution_attrib *filter;
GLuint row;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (ctx->NewState) {
_mesa_update_state(ctx);
}
if (!_mesa_is_legal_format_and_type(format, type)) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glGetConvolutionFilter(format or type)");
return;
}
if (format == GL_COLOR_INDEX ||
format == GL_STENCIL_INDEX ||
format == GL_DEPTH_COMPONENT ||
format == GL_INTENSITY ||
type == GL_BITMAP) {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetConvolutionFilter(format or type)");
return;
}
switch (target) {
case GL_CONVOLUTION_1D:
filter = &(ctx->Convolution1D);
break;
case GL_CONVOLUTION_2D:
filter = &(ctx->Convolution2D);
break;
default:
_mesa_error(ctx, GL_INVALID_ENUM, "glGetConvolutionFilter(target)");
return;
}
for (row = 0; row < filter->Height; row++) {
GLvoid *dst = _mesa_image_address( &ctx->Pack, image, filter->Width,
filter->Height, format, type,
0, row, 0);
const GLfloat *src = filter->Filter + row * filter->Width * 4;
_mesa_pack_float_rgba_span(ctx, filter->Width,
(const GLfloat (*)[4]) src,
format, type, dst, &ctx->Pack, 0);
}
}
void GLAPIENTRY
_mesa_ColorSubTable( GLenum target, GLsizei start,
GLsizei count, GLenum format, GLenum type,
const GLvoid *data )
{
static const GLfloat one[4] = { 1.0, 1.0, 1.0, 1.0 };
static const GLfloat zero[4] = { 0.0, 0.0, 0.0, 0.0 };
GET_CURRENT_CONTEXT(ctx);
struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
struct gl_texture_object *texObj = NULL;
struct gl_color_table *table = NULL;
const GLfloat *scale = one, *bias = zero;
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
switch (target) {
case GL_SHARED_TEXTURE_PALETTE_EXT:
table = &ctx->Texture.Palette;
break;
case GL_COLOR_TABLE:
table = &ctx->ColorTable[COLORTABLE_PRECONVOLUTION];
scale = ctx->Pixel.ColorTableScale[COLORTABLE_PRECONVOLUTION];
bias = ctx->Pixel.ColorTableBias[COLORTABLE_PRECONVOLUTION];
break;
case GL_TEXTURE_COLOR_TABLE_SGI:
if (!ctx->Extensions.SGI_texture_color_table) {
_mesa_error(ctx, GL_INVALID_ENUM, "glColorSubTable(target)");
return;
}
table = &(texUnit->ColorTable);
scale = ctx->Pixel.TextureColorTableScale;
bias = ctx->Pixel.TextureColorTableBias;
break;
case GL_POST_CONVOLUTION_COLOR_TABLE:
table = &ctx->ColorTable[COLORTABLE_POSTCONVOLUTION];
scale = ctx->Pixel.ColorTableScale[COLORTABLE_POSTCONVOLUTION];
bias = ctx->Pixel.ColorTableBias[COLORTABLE_POSTCONVOLUTION];
break;
case GL_POST_COLOR_MATRIX_COLOR_TABLE:
table = &ctx->ColorTable[COLORTABLE_POSTCOLORMATRIX];
scale = ctx->Pixel.ColorTableScale[COLORTABLE_POSTCOLORMATRIX];
bias = ctx->Pixel.ColorTableBias[COLORTABLE_POSTCOLORMATRIX];
break;
default:
/* try texture targets */
texObj = _mesa_select_tex_object(ctx, texUnit, target);
if (texObj && !_mesa_is_proxy_texture(target)) {
table = &texObj->Palette;
}
else {
_mesa_error(ctx, GL_INVALID_ENUM, "glColorSubTable(target)");
return;
}
}
assert(table);
if (!_mesa_is_legal_format_and_type(ctx, format, type) ||
format == GL_INTENSITY) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glColorSubTable(format or type)");
return;
}
if (count < 1) {
_mesa_error(ctx, GL_INVALID_VALUE, "glColorSubTable(count)");
return;
}
/* error should have been caught sooner */
assert(_mesa_components_in_format(table->_BaseFormat) > 0);
if (start + count > (GLint) table->Size) {
_mesa_error(ctx, GL_INVALID_VALUE, "glColorSubTable(count)");
return;
}
if (!table->TableF || !table->TableUB) {
/* a GL_OUT_OF_MEMORY error would have been recorded previously */
return;
}
store_colortable_entries(ctx, table, start, count,
format, type, data,
scale[0], bias[0],
scale[1], bias[1],
scale[2], bias[2],
scale[3], bias[3]);
if (texObj || target == GL_SHARED_TEXTURE_PALETTE_EXT) {
/* per-texture object palette */
if (ctx->Driver.UpdateTexturePalette) {
(*ctx->Driver.UpdateTexturePalette)( ctx, texObj );
}
}
ctx->NewState |= _NEW_PIXEL;
}
void GLAPIENTRY
_mesa_ColorTable( GLenum target, GLenum internalFormat,
GLsizei width, GLenum format, GLenum type,
const GLvoid *data )
{
static const GLfloat one[4] = { 1.0, 1.0, 1.0, 1.0 };
static const GLfloat zero[4] = { 0.0, 0.0, 0.0, 0.0 };
GET_CURRENT_CONTEXT(ctx);
struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
struct gl_texture_object *texObj = NULL;
struct gl_color_table *table = NULL;
GLboolean proxy = GL_FALSE;
GLint baseFormat;
const GLfloat *scale = one, *bias = zero;
GLint comps;
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); /* too complex */
switch (target) {
case GL_SHARED_TEXTURE_PALETTE_EXT:
table = &ctx->Texture.Palette;
break;
case GL_COLOR_TABLE:
table = &ctx->ColorTable[COLORTABLE_PRECONVOLUTION];
scale = ctx->Pixel.ColorTableScale[COLORTABLE_PRECONVOLUTION];
bias = ctx->Pixel.ColorTableBias[COLORTABLE_PRECONVOLUTION];
break;
case GL_PROXY_COLOR_TABLE:
table = &ctx->ProxyColorTable[COLORTABLE_PRECONVOLUTION];
proxy = GL_TRUE;
break;
case GL_TEXTURE_COLOR_TABLE_SGI:
if (!ctx->Extensions.SGI_texture_color_table) {
_mesa_error(ctx, GL_INVALID_ENUM, "glColorTable(target)");
return;
}
table = &(texUnit->ColorTable);
scale = ctx->Pixel.TextureColorTableScale;
bias = ctx->Pixel.TextureColorTableBias;
break;
case GL_PROXY_TEXTURE_COLOR_TABLE_SGI:
if (!ctx->Extensions.SGI_texture_color_table) {
_mesa_error(ctx, GL_INVALID_ENUM, "glColorTable(target)");
return;
}
table = &(texUnit->ProxyColorTable);
proxy = GL_TRUE;
break;
case GL_POST_CONVOLUTION_COLOR_TABLE:
table = &ctx->ColorTable[COLORTABLE_POSTCONVOLUTION];
scale = ctx->Pixel.ColorTableScale[COLORTABLE_POSTCONVOLUTION];
bias = ctx->Pixel.ColorTableBias[COLORTABLE_POSTCONVOLUTION];
break;
case GL_PROXY_POST_CONVOLUTION_COLOR_TABLE:
table = &ctx->ProxyColorTable[COLORTABLE_POSTCONVOLUTION];
proxy = GL_TRUE;
break;
case GL_POST_COLOR_MATRIX_COLOR_TABLE:
table = &ctx->ColorTable[COLORTABLE_POSTCOLORMATRIX];
scale = ctx->Pixel.ColorTableScale[COLORTABLE_POSTCOLORMATRIX];
bias = ctx->Pixel.ColorTableBias[COLORTABLE_POSTCOLORMATRIX];
break;
case GL_PROXY_POST_COLOR_MATRIX_COLOR_TABLE:
table = &ctx->ProxyColorTable[COLORTABLE_POSTCOLORMATRIX];
proxy = GL_TRUE;
break;
default:
/* try texture targets */
{
struct gl_texture_object *texobj
= _mesa_select_tex_object(ctx, texUnit, target);
if (texobj) {
table = &texobj->Palette;
proxy = _mesa_is_proxy_texture(target);
}
else {
_mesa_error(ctx, GL_INVALID_ENUM, "glColorTable(target)");
return;
}
}
}
assert(table);
if (!_mesa_is_legal_format_and_type(ctx, format, type) ||
format == GL_INTENSITY) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glColorTable(format or type)");
return;
}
baseFormat = base_colortab_format(internalFormat);
if (baseFormat < 0) {
_mesa_error(ctx, GL_INVALID_ENUM, "glColorTable(internalFormat)");
return;
}
if (width < 0 || (width != 0 && !_mesa_is_pow_two(width))) {
/* error */
if (proxy) {
table->Size = 0;
table->InternalFormat = (GLenum) 0;
table->_BaseFormat = (GLenum) 0;
}
else {
_mesa_error(ctx, GL_INVALID_VALUE, "glColorTable(width=%d)", width);
}
return;
}
if (width > (GLsizei) ctx->Const.MaxColorTableSize) {
if (proxy) {
table->Size = 0;
table->InternalFormat = (GLenum) 0;
table->_BaseFormat = (GLenum) 0;
}
else {
_mesa_error(ctx, GL_TABLE_TOO_LARGE, "glColorTable(width)");
}
return;
}
table->Size = width;
table->InternalFormat = internalFormat;
table->_BaseFormat = (GLenum) baseFormat;
comps = _mesa_components_in_format(table->_BaseFormat);
assert(comps > 0); /* error should have been caught sooner */
if (!proxy) {
_mesa_free_colortable_data(table);
if (width > 0) {
table->TableF = (GLfloat *) _mesa_malloc(comps * width * sizeof(GLfloat));
table->TableUB = (GLubyte *) _mesa_malloc(comps * width * sizeof(GLubyte));
if (!table->TableF || !table->TableUB) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glColorTable");
return;
}
store_colortable_entries(ctx, table,
0, width, /* start, count */
format, type, data,
scale[0], bias[0],
scale[1], bias[1],
scale[2], bias[2],
scale[3], bias[3]);
}
} /* proxy */
/* do this after the table's Type and Format are set */
set_component_sizes(table);
if (texObj || target == GL_SHARED_TEXTURE_PALETTE_EXT) {
/* texture object palette, texObj==NULL means the shared palette */
if (ctx->Driver.UpdateTexturePalette) {
(*ctx->Driver.UpdateTexturePalette)( ctx, texObj );
}
}
ctx->NewState |= _NEW_PIXEL;
}
/**
* Do error checking of the format/type parameters to glReadPixels and
* glDrawPixels.
* \param drawing if GL_TRUE do checking for DrawPixels, else do checking
* for ReadPixels.
* \return GL_TRUE if error detected, GL_FALSE if no errors
*/
GLboolean
_mesa_error_check_format_type(GLcontext *ctx, GLenum format, GLenum type,
GLboolean drawing)
{
const char *readDraw = drawing ? "Draw" : "Read";
if (ctx->Extensions.EXT_packed_depth_stencil
&& type == GL_UNSIGNED_INT_24_8_EXT
&& format != GL_DEPTH_STENCIL_EXT) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"gl%sPixels(format is not GL_DEPTH_STENCIL_EXT)", readDraw);
return GL_TRUE;
}
/* basic combinations test */
if (!_mesa_is_legal_format_and_type(ctx, format, type)) {
_mesa_error(ctx, GL_INVALID_ENUM,
"gl%sPixels(format or type)", readDraw);
return GL_TRUE;
}
/* additional checks */
switch (format) {
case GL_RED:
case GL_GREEN:
case GL_BLUE:
case GL_ALPHA:
case GL_LUMINANCE:
case GL_LUMINANCE_ALPHA:
case GL_RGB:
case GL_BGR:
case GL_RGBA:
case GL_BGRA:
case GL_ABGR_EXT:
if (drawing && !ctx->Visual.rgbMode) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glDrawPixels(drawing RGB pixels into color index buffer)");
return GL_TRUE;
}
if (!drawing && !_mesa_dest_buffer_exists(ctx, GL_COLOR)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glReadPixels(no color buffer)");
return GL_TRUE;
}
break;
case GL_COLOR_INDEX:
if (!drawing && ctx->Visual.rgbMode) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glReadPixels(reading color index format from RGB buffer)");
return GL_TRUE;
}
if (!drawing && !_mesa_dest_buffer_exists(ctx, GL_COLOR)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glReadPixels(no color buffer)");
return GL_TRUE;
}
break;
case GL_STENCIL_INDEX:
if ((drawing && !_mesa_dest_buffer_exists(ctx, format)) ||
(!drawing && !_mesa_source_buffer_exists(ctx, format))) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"gl%sPixels(no stencil buffer)", readDraw);
return GL_TRUE;
}
break;
case GL_DEPTH_COMPONENT:
if ((drawing && !_mesa_dest_buffer_exists(ctx, format))) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"gl%sPixels(no depth buffer)", readDraw);
return GL_TRUE;
}
break;
case GL_DEPTH_STENCIL_EXT:
if (!ctx->Extensions.EXT_packed_depth_stencil ||
type != GL_UNSIGNED_INT_24_8_EXT) {
_mesa_error(ctx, GL_INVALID_ENUM, "gl%sPixels(type)", readDraw);
return GL_TRUE;
}
if ((drawing && !_mesa_dest_buffer_exists(ctx, format)) ||
(!drawing && !_mesa_source_buffer_exists(ctx, format))) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"gl%sPixels(no depth or stencil buffer)", readDraw);
return GL_TRUE;
}
break;
default:
/* this should have been caught in _mesa_is_legal_format_type() */
_mesa_problem(ctx, "unexpected format in _mesa_%sPixels", readDraw);
return GL_TRUE;
}
/* no errors */
return GL_FALSE;
}
/**
* Do error checking of the format/type parameters to glReadPixels and
* glDrawPixels.
* \param drawing if GL_TRUE do checking for DrawPixels, else do checking
* for ReadPixels.
* \return GL_TRUE if error detected, GL_FALSE if no errors
*/
GLboolean
_mesa_error_check_format_type(struct gl_context *ctx, GLenum format,
GLenum type, GLboolean drawing)
{
const char *readDraw = drawing ? "Draw" : "Read";
const GLboolean reading = !drawing;
/* state validation should have already been done */
ASSERT(ctx->NewState == 0x0);
if (ctx->Extensions.EXT_packed_depth_stencil
&& type == GL_UNSIGNED_INT_24_8_EXT
&& format != GL_DEPTH_STENCIL_EXT) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"gl%sPixels(format is not GL_DEPTH_STENCIL_EXT)", readDraw);
return GL_TRUE;
}
if (ctx->Extensions.ARB_depth_buffer_float
&& type == GL_FLOAT_32_UNSIGNED_INT_24_8_REV
&& format != GL_DEPTH_STENCIL_EXT) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"gl%sPixels(format is not GL_DEPTH_STENCIL_EXT)", readDraw);
return GL_TRUE;
}
/* basic combinations test */
if (!_mesa_is_legal_format_and_type(ctx, format, type)) {
_mesa_error(ctx, GL_INVALID_ENUM,
"gl%sPixels(format or type)", readDraw);
return GL_TRUE;
}
/* additional checks */
switch (format) {
case GL_RG:
case GL_RED:
case GL_GREEN:
case GL_BLUE:
case GL_ALPHA:
case GL_LUMINANCE:
case GL_LUMINANCE_ALPHA:
case GL_RGB:
case GL_BGR:
case GL_RGBA:
case GL_BGRA:
case GL_ABGR_EXT:
case GL_RED_INTEGER_EXT:
case GL_GREEN_INTEGER_EXT:
case GL_BLUE_INTEGER_EXT:
case GL_ALPHA_INTEGER_EXT:
case GL_RGB_INTEGER_EXT:
case GL_RGBA_INTEGER_EXT:
case GL_BGR_INTEGER_EXT:
case GL_BGRA_INTEGER_EXT:
case GL_LUMINANCE_INTEGER_EXT:
case GL_LUMINANCE_ALPHA_INTEGER_EXT:
if (!drawing) {
/* reading */
if (!_mesa_source_buffer_exists(ctx, GL_COLOR)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glReadPixels(no color buffer)");
return GL_TRUE;
}
}
break;
case GL_COLOR_INDEX:
if (drawing) {
if (ctx->PixelMaps.ItoR.Size == 0 ||
ctx->PixelMaps.ItoG.Size == 0 ||
ctx->PixelMaps.ItoB.Size == 0) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glDrawPixels(drawing color index pixels into RGB buffer)");
return GL_TRUE;
}
}
else {
/* reading */
if (!_mesa_source_buffer_exists(ctx, GL_COLOR)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glReadPixels(no color buffer)");
return GL_TRUE;
}
/* We no longer support CI-mode color buffers so trying to read
* GL_COLOR_INDEX pixels is always an error.
*/
_mesa_error(ctx, GL_INVALID_OPERATION,
"glReadPixels(color buffer is RGB)");
return GL_TRUE;
}
break;
case GL_STENCIL_INDEX:
if ((drawing && !_mesa_dest_buffer_exists(ctx, format)) ||
(reading && !_mesa_source_buffer_exists(ctx, format))) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"gl%sPixels(no stencil buffer)", readDraw);
return GL_TRUE;
}
break;
case GL_DEPTH_COMPONENT:
if ((drawing && !_mesa_dest_buffer_exists(ctx, format))) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"gl%sPixels(no depth buffer)", readDraw);
return GL_TRUE;
}
break;
case GL_DEPTH_STENCIL_EXT:
/* Check validity of the type first. */
switch (type) {
case GL_UNSIGNED_INT_24_8_EXT:
if (!ctx->Extensions.EXT_packed_depth_stencil) {
_mesa_error(ctx, GL_INVALID_ENUM, "gl%sPixels(type)", readDraw);
return GL_TRUE;
}
break;
case GL_FLOAT_32_UNSIGNED_INT_24_8_REV:
if (!ctx->Extensions.ARB_depth_buffer_float) {
_mesa_error(ctx, GL_INVALID_ENUM, "gl%sPixels(type)", readDraw);
return GL_TRUE;
}
break;
default:
_mesa_error(ctx, GL_INVALID_ENUM, "gl%sPixels(type)", readDraw);
return GL_TRUE;
}
if ((drawing && !_mesa_dest_buffer_exists(ctx, format)) ||
(reading && !_mesa_source_buffer_exists(ctx, format))) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"gl%sPixels(no depth or stencil buffer)", readDraw);
return GL_TRUE;
}
break;
default:
/* this should have been caught in _mesa_is_legal_format_type() */
_mesa_problem(ctx, "unexpected format in _mesa_%sPixels", readDraw);
return GL_TRUE;
}
/* no errors */
return GL_FALSE;
}
static void GLAPIENTRY
_mesa_GetMinmax(GLenum target, GLboolean reset, GLenum format, GLenum type, GLvoid *values)
{
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
if (!ctx->Extensions.EXT_histogram && !ctx->Extensions.ARB_imaging) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glGetMinmax");
return;
}
if (target != GL_MINMAX) {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetMinmax(target)");
return;
}
if (format != GL_RED &&
format != GL_GREEN &&
format != GL_BLUE &&
format != GL_ALPHA &&
format != GL_RGB &&
format != GL_BGR &&
format != GL_RGBA &&
format != GL_BGRA &&
format != GL_ABGR_EXT &&
format != GL_LUMINANCE &&
format != GL_LUMINANCE_ALPHA) {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetMinMax(format)");
}
if (!_mesa_is_legal_format_and_type(ctx, format, type)) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glGetMinmax(format or type)");
return;
}
values = _mesa_map_validate_pbo_dest(ctx, 1, &ctx->Pack, 2, 1, 1,
format, type, values, "glGetMinmax");
if (!values)
return;
{
GLfloat minmax[2][4];
minmax[0][RCOMP] = CLAMP(ctx->MinMax.Min[RCOMP], 0.0F, 1.0F);
minmax[0][GCOMP] = CLAMP(ctx->MinMax.Min[GCOMP], 0.0F, 1.0F);
minmax[0][BCOMP] = CLAMP(ctx->MinMax.Min[BCOMP], 0.0F, 1.0F);
minmax[0][ACOMP] = CLAMP(ctx->MinMax.Min[ACOMP], 0.0F, 1.0F);
minmax[1][RCOMP] = CLAMP(ctx->MinMax.Max[RCOMP], 0.0F, 1.0F);
minmax[1][GCOMP] = CLAMP(ctx->MinMax.Max[GCOMP], 0.0F, 1.0F);
minmax[1][BCOMP] = CLAMP(ctx->MinMax.Max[BCOMP], 0.0F, 1.0F);
minmax[1][ACOMP] = CLAMP(ctx->MinMax.Max[ACOMP], 0.0F, 1.0F);
_mesa_pack_rgba_span_float(ctx, 2, minmax,
format, type, values, &ctx->Pack, 0x0);
}
_mesa_unmap_pbo_dest(ctx, &ctx->Pack);
if (reset) {
_mesa_ResetMinmax(GL_MINMAX);
}
}
void GLAPIENTRY
_mesa_ColorSubTable( GLenum target, GLsizei start,
GLsizei count, GLenum format, GLenum type,
const GLvoid *data )
{
GET_CURRENT_CONTEXT(ctx);
struct gl_texture_unit *texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
struct gl_texture_object *texObj = NULL;
struct gl_color_table *table = NULL;
GLfloat rScale = 1.0, gScale = 1.0, bScale = 1.0, aScale = 1.0;
GLfloat rBias = 0.0, gBias = 0.0, bBias = 0.0, aBias = 0.0;
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
switch (target) {
case GL_TEXTURE_1D:
texObj = texUnit->Current1D;
table = &texObj->Palette;
break;
case GL_TEXTURE_2D:
texObj = texUnit->Current2D;
table = &texObj->Palette;
break;
case GL_TEXTURE_3D:
texObj = texUnit->Current3D;
table = &texObj->Palette;
break;
case GL_TEXTURE_CUBE_MAP_ARB:
if (!ctx->Extensions.ARB_texture_cube_map) {
_mesa_error(ctx, GL_INVALID_ENUM, "glColorSubTable(target)");
return;
}
texObj = texUnit->CurrentCubeMap;
table = &texObj->Palette;
break;
case GL_SHARED_TEXTURE_PALETTE_EXT:
table = &ctx->Texture.Palette;
break;
case GL_COLOR_TABLE:
table = &ctx->ColorTable;
rScale = ctx->Pixel.ColorTableScale[0];
gScale = ctx->Pixel.ColorTableScale[1];
bScale = ctx->Pixel.ColorTableScale[2];
aScale = ctx->Pixel.ColorTableScale[3];
rBias = ctx->Pixel.ColorTableBias[0];
gBias = ctx->Pixel.ColorTableBias[1];
bBias = ctx->Pixel.ColorTableBias[2];
aBias = ctx->Pixel.ColorTableBias[3];
break;
case GL_TEXTURE_COLOR_TABLE_SGI:
if (!ctx->Extensions.SGI_texture_color_table) {
_mesa_error(ctx, GL_INVALID_ENUM, "glColorSubTable(target)");
return;
}
table = &(texUnit->ColorTable);
rScale = ctx->Pixel.TextureColorTableScale[0];
gScale = ctx->Pixel.TextureColorTableScale[1];
bScale = ctx->Pixel.TextureColorTableScale[2];
aScale = ctx->Pixel.TextureColorTableScale[3];
rBias = ctx->Pixel.TextureColorTableBias[0];
gBias = ctx->Pixel.TextureColorTableBias[1];
bBias = ctx->Pixel.TextureColorTableBias[2];
aBias = ctx->Pixel.TextureColorTableBias[3];
break;
case GL_POST_CONVOLUTION_COLOR_TABLE:
table = &ctx->PostConvolutionColorTable;
rScale = ctx->Pixel.PCCTscale[0];
gScale = ctx->Pixel.PCCTscale[1];
bScale = ctx->Pixel.PCCTscale[2];
aScale = ctx->Pixel.PCCTscale[3];
rBias = ctx->Pixel.PCCTbias[0];
gBias = ctx->Pixel.PCCTbias[1];
bBias = ctx->Pixel.PCCTbias[2];
aBias = ctx->Pixel.PCCTbias[3];
break;
case GL_POST_COLOR_MATRIX_COLOR_TABLE:
table = &ctx->PostColorMatrixColorTable;
rScale = ctx->Pixel.PCMCTscale[0];
gScale = ctx->Pixel.PCMCTscale[1];
bScale = ctx->Pixel.PCMCTscale[2];
aScale = ctx->Pixel.PCMCTscale[3];
rBias = ctx->Pixel.PCMCTbias[0];
gBias = ctx->Pixel.PCMCTbias[1];
bBias = ctx->Pixel.PCMCTbias[2];
aBias = ctx->Pixel.PCMCTbias[3];
break;
default:
_mesa_error(ctx, GL_INVALID_ENUM, "glColorSubTable(target)");
return;
}
assert(table);
if (!_mesa_is_legal_format_and_type(ctx, format, type) ||
format == GL_INTENSITY) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glColorSubTable(format or type)");
return;
}
if (count < 1) {
_mesa_error(ctx, GL_INVALID_VALUE, "glColorSubTable(count)");
return;
}
/* error should have been caught sooner */
assert(_mesa_components_in_format(table->Format) > 0);
if (start + count > (GLint) table->Size) {
_mesa_error(ctx, GL_INVALID_VALUE, "glColorSubTable(count)");
return;
}
if (!table->Table) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glColorSubTable");
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 */
if (ctx->Driver.UpdateTexturePalette) {
(*ctx->Driver.UpdateTexturePalette)( ctx, texObj );
}
}
ctx->NewState |= _NEW_PIXEL;
}
void GLAPIENTRY
_mesa_ColorTable( GLenum target, GLenum internalFormat,
GLsizei width, GLenum format, GLenum type,
const GLvoid *data )
{
GET_CURRENT_CONTEXT(ctx);
struct gl_texture_unit *texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
struct gl_texture_object *texObj = NULL;
struct gl_color_table *table = NULL;
GLboolean proxy = GL_FALSE;
GLint baseFormat;
GLfloat rScale = 1.0, gScale = 1.0, bScale = 1.0, aScale = 1.0;
GLfloat rBias = 0.0, gBias = 0.0, bBias = 0.0, aBias = 0.0;
GLenum tableType = CHAN_TYPE;
GLint comps;
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); /* too complex */
switch (target) {
case GL_TEXTURE_1D:
texObj = texUnit->Current1D;
table = &texObj->Palette;
break;
case GL_TEXTURE_2D:
texObj = texUnit->Current2D;
table = &texObj->Palette;
break;
case GL_TEXTURE_3D:
texObj = texUnit->Current3D;
table = &texObj->Palette;
break;
case GL_TEXTURE_CUBE_MAP_ARB:
if (!ctx->Extensions.ARB_texture_cube_map) {
_mesa_error(ctx, GL_INVALID_ENUM, "glColorTable(target)");
return;
}
texObj = texUnit->CurrentCubeMap;
table = &texObj->Palette;
break;
case GL_PROXY_TEXTURE_1D:
texObj = ctx->Texture.Proxy1D;
table = &texObj->Palette;
proxy = GL_TRUE;
break;
case GL_PROXY_TEXTURE_2D:
texObj = ctx->Texture.Proxy2D;
table = &texObj->Palette;
proxy = GL_TRUE;
break;
case GL_PROXY_TEXTURE_3D:
texObj = ctx->Texture.Proxy3D;
table = &texObj->Palette;
proxy = GL_TRUE;
break;
case GL_PROXY_TEXTURE_CUBE_MAP_ARB:
if (!ctx->Extensions.ARB_texture_cube_map) {
_mesa_error(ctx, GL_INVALID_ENUM, "glColorTable(target)");
return;
}
texObj = ctx->Texture.ProxyCubeMap;
table = &texObj->Palette;
break;
case GL_SHARED_TEXTURE_PALETTE_EXT:
table = &ctx->Texture.Palette;
break;
case GL_COLOR_TABLE:
table = &ctx->ColorTable;
tableType = GL_FLOAT;
rScale = ctx->Pixel.ColorTableScale[0];
gScale = ctx->Pixel.ColorTableScale[1];
bScale = ctx->Pixel.ColorTableScale[2];
aScale = ctx->Pixel.ColorTableScale[3];
rBias = ctx->Pixel.ColorTableBias[0];
gBias = ctx->Pixel.ColorTableBias[1];
bBias = ctx->Pixel.ColorTableBias[2];
aBias = ctx->Pixel.ColorTableBias[3];
break;
case GL_PROXY_COLOR_TABLE:
table = &ctx->ProxyColorTable;
proxy = GL_TRUE;
break;
case GL_TEXTURE_COLOR_TABLE_SGI:
if (!ctx->Extensions.SGI_texture_color_table) {
_mesa_error(ctx, GL_INVALID_ENUM, "glColorTable(target)");
return;
}
table = &(texUnit->ColorTable);
tableType = GL_FLOAT;
rScale = ctx->Pixel.TextureColorTableScale[0];
gScale = ctx->Pixel.TextureColorTableScale[1];
bScale = ctx->Pixel.TextureColorTableScale[2];
aScale = ctx->Pixel.TextureColorTableScale[3];
rBias = ctx->Pixel.TextureColorTableBias[0];
gBias = ctx->Pixel.TextureColorTableBias[1];
bBias = ctx->Pixel.TextureColorTableBias[2];
aBias = ctx->Pixel.TextureColorTableBias[3];
break;
case GL_PROXY_TEXTURE_COLOR_TABLE_SGI:
if (!ctx->Extensions.SGI_texture_color_table) {
_mesa_error(ctx, GL_INVALID_ENUM, "glColorTable(target)");
return;
}
table = &(texUnit->ProxyColorTable);
proxy = GL_TRUE;
break;
case GL_POST_CONVOLUTION_COLOR_TABLE:
table = &ctx->PostConvolutionColorTable;
tableType = GL_FLOAT;
rScale = ctx->Pixel.PCCTscale[0];
gScale = ctx->Pixel.PCCTscale[1];
bScale = ctx->Pixel.PCCTscale[2];
aScale = ctx->Pixel.PCCTscale[3];
rBias = ctx->Pixel.PCCTbias[0];
gBias = ctx->Pixel.PCCTbias[1];
bBias = ctx->Pixel.PCCTbias[2];
aBias = ctx->Pixel.PCCTbias[3];
break;
case GL_PROXY_POST_CONVOLUTION_COLOR_TABLE:
table = &ctx->ProxyPostConvolutionColorTable;
proxy = GL_TRUE;
break;
case GL_POST_COLOR_MATRIX_COLOR_TABLE:
table = &ctx->PostColorMatrixColorTable;
tableType = GL_FLOAT;
rScale = ctx->Pixel.PCMCTscale[0];
gScale = ctx->Pixel.PCMCTscale[1];
bScale = ctx->Pixel.PCMCTscale[2];
aScale = ctx->Pixel.PCMCTscale[3];
rBias = ctx->Pixel.PCMCTbias[0];
gBias = ctx->Pixel.PCMCTbias[1];
bBias = ctx->Pixel.PCMCTbias[2];
aBias = ctx->Pixel.PCMCTbias[3];
break;
case GL_PROXY_POST_COLOR_MATRIX_COLOR_TABLE:
table = &ctx->ProxyPostColorMatrixColorTable;
proxy = GL_TRUE;
break;
default:
_mesa_error(ctx, GL_INVALID_ENUM, "glColorTable(target)");
return;
}
assert(table);
if (!_mesa_is_legal_format_and_type(ctx, format, type) ||
format == GL_INTENSITY) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glColorTable(format or type)");
return;
}
baseFormat = base_colortab_format(internalFormat);
if (baseFormat < 0 || baseFormat == GL_COLOR_INDEX) {
_mesa_error(ctx, GL_INVALID_ENUM, "glColorTable(internalFormat)");
return;
}
if (width < 0 || (width != 0 && _mesa_bitcount(width) != 1)) {
/* error */
if (proxy) {
table->Size = 0;
table->IntFormat = (GLenum) 0;
table->Format = (GLenum) 0;
}
else {
_mesa_error(ctx, GL_INVALID_VALUE, "glColorTable(width=%d)", width);
}
return;
}
if (width > (GLsizei) ctx->Const.MaxColorTableSize) {
if (proxy) {
table->Size = 0;
table->IntFormat = (GLenum) 0;
table->Format = (GLenum) 0;
}
else {
_mesa_error(ctx, GL_TABLE_TOO_LARGE, "glColorTable(width)");
}
return;
}
table->Size = width;
table->IntFormat = internalFormat;
table->Format = (GLenum) baseFormat;
set_component_sizes(table);
comps = _mesa_components_in_format(table->Format);
assert(comps > 0); /* error should have been caught sooner */
if (!proxy) {
/* free old table, if any */
if (table->Table) {
FREE(table->Table);
table->Table = NULL;
}
if (width > 0) {
if (tableType == GL_FLOAT) {
table->Type = GL_FLOAT;
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;
}
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) {
/* texture object palette, texObj==NULL means the shared palette */
if (ctx->Driver.UpdateTexturePalette) {
(*ctx->Driver.UpdateTexturePalette)( ctx, texObj );
}
}
ctx->NewState |= _NEW_PIXEL;
}
void
_mesa_SeparableFilter2D(GLenum target, GLenum internalFormat, GLsizei width, GLsizei height, GLenum format, GLenum type, const GLvoid *row, const GLvoid *column)
{
const GLint colStart = MAX_CONVOLUTION_WIDTH * 4;
GLint baseFormat;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
if (target != GL_SEPARABLE_2D) {
_mesa_error(ctx, GL_INVALID_ENUM, "glSeparableFilter2D(target)");
return;
}
baseFormat = base_filter_format(internalFormat);
if (baseFormat < 0 || baseFormat == GL_COLOR_INDEX) {
_mesa_error(ctx, GL_INVALID_ENUM, "glSeparableFilter2D(internalFormat)");
return;
}
if (width < 0 || width > MAX_CONVOLUTION_WIDTH) {
_mesa_error(ctx, GL_INVALID_VALUE, "glSeparableFilter2D(width)");
return;
}
if (height < 0 || height > MAX_CONVOLUTION_HEIGHT) {
_mesa_error(ctx, GL_INVALID_VALUE, "glSeparableFilter2D(height)");
return;
}
if (!_mesa_is_legal_format_and_type(format, type)) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glSeparableFilter2D(format or type)");
return;
}
if (format == GL_COLOR_INDEX ||
format == GL_STENCIL_INDEX ||
format == GL_DEPTH_COMPONENT ||
format == GL_INTENSITY ||
type == GL_BITMAP) {
_mesa_error(ctx, GL_INVALID_ENUM, "glSeparableFilter2D(format or type)");
return;
}
ctx->Separable2D.Format = format;
ctx->Separable2D.InternalFormat = internalFormat;
ctx->Separable2D.Width = width;
ctx->Separable2D.Height = height;
/* unpack row filter */
_mesa_unpack_float_color_span(ctx, width, GL_RGBA,
ctx->Separable2D.Filter,
format, type, row, &ctx->Unpack,
0, GL_FALSE);
/* apply scale and bias */
{
const GLfloat *scale = ctx->Pixel.ConvolutionFilterScale[2];
const GLfloat *bias = ctx->Pixel.ConvolutionFilterBias[2];
GLint i;
for (i = 0; i < width; i++) {
GLfloat r = ctx->Separable2D.Filter[i * 4 + 0];
GLfloat g = ctx->Separable2D.Filter[i * 4 + 1];
GLfloat b = ctx->Separable2D.Filter[i * 4 + 2];
GLfloat a = ctx->Separable2D.Filter[i * 4 + 3];
r = r * scale[0] + bias[0];
g = g * scale[1] + bias[1];
b = b * scale[2] + bias[2];
a = a * scale[3] + bias[3];
ctx->Separable2D.Filter[i * 4 + 0] = r;
ctx->Separable2D.Filter[i * 4 + 1] = g;
ctx->Separable2D.Filter[i * 4 + 2] = b;
ctx->Separable2D.Filter[i * 4 + 3] = a;
}
}
/* unpack column filter */
_mesa_unpack_float_color_span(ctx, width, GL_RGBA,
&ctx->Separable2D.Filter[colStart],
format, type, column, &ctx->Unpack,
0, GL_FALSE);
/* apply scale and bias */
{
const GLfloat *scale = ctx->Pixel.ConvolutionFilterScale[2];
const GLfloat *bias = ctx->Pixel.ConvolutionFilterBias[2];
GLint i;
for (i = 0; i < width; i++) {
GLfloat r = ctx->Separable2D.Filter[i * 4 + 0 + colStart];
GLfloat g = ctx->Separable2D.Filter[i * 4 + 1 + colStart];
GLfloat b = ctx->Separable2D.Filter[i * 4 + 2 + colStart];
GLfloat a = ctx->Separable2D.Filter[i * 4 + 3 + colStart];
r = r * scale[0] + bias[0];
g = g * scale[1] + bias[1];
b = b * scale[2] + bias[2];
a = a * scale[3] + bias[3];
ctx->Separable2D.Filter[i * 4 + 0 + colStart] = r;
ctx->Separable2D.Filter[i * 4 + 1 + colStart] = g;
ctx->Separable2D.Filter[i * 4 + 2 + colStart] = b;
ctx->Separable2D.Filter[i * 4 + 3 + colStart] = a;
}
}
ctx->NewState |= _NEW_PIXEL;
}
void
_mesa_ConvolutionFilter2D(GLenum target, GLenum internalFormat, GLsizei width, GLsizei height, GLenum format, GLenum type, const GLvoid *image)
{
GLint baseFormat;
GLint i, components;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
if (target != GL_CONVOLUTION_2D) {
_mesa_error(ctx, GL_INVALID_ENUM, "glConvolutionFilter2D(target)");
return;
}
baseFormat = base_filter_format(internalFormat);
if (baseFormat < 0 || baseFormat == GL_COLOR_INDEX) {
_mesa_error(ctx, GL_INVALID_ENUM, "glConvolutionFilter2D(internalFormat)");
return;
}
if (width < 0 || width > MAX_CONVOLUTION_WIDTH) {
_mesa_error(ctx, GL_INVALID_VALUE, "glConvolutionFilter2D(width)");
return;
}
if (height < 0 || height > MAX_CONVOLUTION_HEIGHT) {
_mesa_error(ctx, GL_INVALID_VALUE, "glConvolutionFilter2D(height)");
return;
}
if (!_mesa_is_legal_format_and_type(format, type)) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glConvolutionFilter2D(format or type)");
return;
}
if (format == GL_COLOR_INDEX ||
format == GL_STENCIL_INDEX ||
format == GL_DEPTH_COMPONENT ||
format == GL_INTENSITY ||
type == GL_BITMAP) {
_mesa_error(ctx, GL_INVALID_ENUM, "glConvolutionFilter2D(format or type)");
return;
}
components = _mesa_components_in_format(format);
assert(components > 0); /* this should have been caught earlier */
ctx->Convolution2D.Format = format;
ctx->Convolution2D.InternalFormat = internalFormat;
ctx->Convolution2D.Width = width;
ctx->Convolution2D.Height = height;
/* Unpack filter image. We always store filters in RGBA format. */
for (i = 0; i < height; i++) {
const GLvoid *src = _mesa_image_address(&ctx->Unpack, image, width,
height, format, type, 0, i, 0);
GLfloat *dst = ctx->Convolution2D.Filter + i * width * 4;
_mesa_unpack_float_color_span(ctx, width, GL_RGBA, dst,
format, type, src, &ctx->Unpack,
0, GL_FALSE);
}
/* apply scale and bias */
{
const GLfloat *scale = ctx->Pixel.ConvolutionFilterScale[1];
const GLfloat *bias = ctx->Pixel.ConvolutionFilterBias[1];
for (i = 0; i < width * height; i++) {
GLfloat r = ctx->Convolution2D.Filter[i * 4 + 0];
GLfloat g = ctx->Convolution2D.Filter[i * 4 + 1];
GLfloat b = ctx->Convolution2D.Filter[i * 4 + 2];
GLfloat a = ctx->Convolution2D.Filter[i * 4 + 3];
r = r * scale[0] + bias[0];
g = g * scale[1] + bias[1];
b = b * scale[2] + bias[2];
a = a * scale[3] + bias[3];
ctx->Convolution2D.Filter[i * 4 + 0] = r;
ctx->Convolution2D.Filter[i * 4 + 1] = g;
ctx->Convolution2D.Filter[i * 4 + 2] = b;
ctx->Convolution2D.Filter[i * 4 + 3] = a;
}
}
ctx->NewState |= _NEW_PIXEL;
}
void
_mesa_GetHistogram(GLenum target, GLboolean reset, GLenum format, GLenum type, GLvoid *values)
{
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
if (!ctx->Extensions.EXT_histogram && !ctx->Extensions.ARB_imaging) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glGetHistogram");
return;
}
if (target != GL_HISTOGRAM) {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetHistogram(target)");
return;
}
if (!_mesa_is_legal_format_and_type(format, type)) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glGetHistogram(format or type)");
return;
}
if (type != GL_UNSIGNED_BYTE &&
type != GL_BYTE &&
type != GL_UNSIGNED_SHORT &&
type != GL_SHORT &&
type != GL_UNSIGNED_INT &&
type != GL_INT &&
type != GL_FLOAT &&
type != GL_UNSIGNED_BYTE_3_3_2 &&
type != GL_UNSIGNED_BYTE_2_3_3_REV &&
type != GL_UNSIGNED_SHORT_5_6_5 &&
type != GL_UNSIGNED_SHORT_5_6_5_REV &&
type != GL_UNSIGNED_SHORT_4_4_4_4 &&
type != GL_UNSIGNED_SHORT_4_4_4_4_REV &&
type != GL_UNSIGNED_SHORT_5_5_5_1 &&
type != GL_UNSIGNED_SHORT_1_5_5_5_REV &&
type != GL_UNSIGNED_INT_8_8_8_8 &&
type != GL_UNSIGNED_INT_8_8_8_8_REV &&
type != GL_UNSIGNED_INT_10_10_10_2 &&
type != GL_UNSIGNED_INT_2_10_10_10_REV) {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetHistogram(type)");
return;
}
if (!values)
return;
pack_histogram(ctx, ctx->Histogram.Width,
(CONST GLuint (*)[4]) ctx->Histogram.Count,
format, type, values, &ctx->Pack);
if (reset) {
GLuint i;
for (i = 0; i < HISTOGRAM_TABLE_SIZE; i++) {
ctx->Histogram.Count[i][0] = 0;
ctx->Histogram.Count[i][1] = 0;
ctx->Histogram.Count[i][2] = 0;
ctx->Histogram.Count[i][3] = 0;
}
}
}
void
_mesa_GetMinmax(GLenum target, GLboolean reset, GLenum format, GLenum type, GLvoid *values)
{
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
if (!ctx->Extensions.EXT_histogram && !ctx->Extensions.ARB_imaging) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glGetMinmax");
return;
}
if (target != GL_MINMAX) {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetMinmax(target)");
return;
}
if (!_mesa_is_legal_format_and_type(format, type)) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glGetMinmax(format or type)");
return;
}
if (type != GL_UNSIGNED_BYTE &&
type != GL_BYTE &&
type != GL_UNSIGNED_SHORT &&
type != GL_SHORT &&
type != GL_UNSIGNED_INT &&
type != GL_INT &&
type != GL_FLOAT &&
type != GL_UNSIGNED_BYTE_3_3_2 &&
type != GL_UNSIGNED_BYTE_2_3_3_REV &&
type != GL_UNSIGNED_SHORT_5_6_5 &&
type != GL_UNSIGNED_SHORT_5_6_5_REV &&
type != GL_UNSIGNED_SHORT_4_4_4_4 &&
type != GL_UNSIGNED_SHORT_4_4_4_4_REV &&
type != GL_UNSIGNED_SHORT_5_5_5_1 &&
type != GL_UNSIGNED_SHORT_1_5_5_5_REV &&
type != GL_UNSIGNED_INT_8_8_8_8 &&
type != GL_UNSIGNED_INT_8_8_8_8_REV &&
type != GL_UNSIGNED_INT_10_10_10_2 &&
type != GL_UNSIGNED_INT_2_10_10_10_REV) {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetMinmax(type)");
return;
}
if (!values)
return;
{
GLfloat minmax[2][4];
minmax[0][RCOMP] = CLAMP(ctx->MinMax.Min[RCOMP], 0.0F, 1.0F);
minmax[0][GCOMP] = CLAMP(ctx->MinMax.Min[GCOMP], 0.0F, 1.0F);
minmax[0][BCOMP] = CLAMP(ctx->MinMax.Min[BCOMP], 0.0F, 1.0F);
minmax[0][ACOMP] = CLAMP(ctx->MinMax.Min[ACOMP], 0.0F, 1.0F);
minmax[1][RCOMP] = CLAMP(ctx->MinMax.Max[RCOMP], 0.0F, 1.0F);
minmax[1][GCOMP] = CLAMP(ctx->MinMax.Max[GCOMP], 0.0F, 1.0F);
minmax[1][BCOMP] = CLAMP(ctx->MinMax.Max[BCOMP], 0.0F, 1.0F);
minmax[1][ACOMP] = CLAMP(ctx->MinMax.Max[ACOMP], 0.0F, 1.0F);
_mesa_pack_float_rgba_span(ctx, 2, (CONST GLfloat (*)[4]) minmax,
format, type, values, &ctx->Pack, 0);
}
if (reset) {
_mesa_ResetMinmax(GL_MINMAX);
}
}
