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;
}
}
}
/**
* Called by glPolygonStipple.
*/
void GLAPIENTRY
_mesa_GetnPolygonStippleARB( GLsizei bufSize, GLubyte *dest )
{
GET_CURRENT_CONTEXT(ctx);
if (MESA_VERBOSE&VERBOSE_API)
_mesa_debug(ctx, "glGetPolygonStipple\n");
dest = _mesa_map_validate_pbo_dest(ctx, 2,
&ctx->Pack, 32, 32, 1,
GL_COLOR_INDEX, GL_BITMAP,
bufSize, dest, "glGetPolygonStipple");
if (!dest)
return;
_mesa_pack_polygon_stipple(ctx->PolygonStipple, dest, &ctx->Pack);
_mesa_unmap_pbo_dest(ctx, &ctx->Pack);
}
static void GLAPIENTRY
_mesa_GetColorTable( GLenum target, GLenum format,
GLenum type, GLvoid *data )
{
GET_CURRENT_CONTEXT(ctx);
struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
struct gl_color_table *table = NULL;
GLfloat rgba[MAX_COLOR_TABLE_SIZE][4];
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
if (ctx->NewState) {
_mesa_update_state(ctx);
}
switch (target) {
case GL_SHARED_TEXTURE_PALETTE_EXT:
table = &ctx->Texture.Palette;
break;
case GL_COLOR_TABLE:
table = &ctx->ColorTable[COLORTABLE_PRECONVOLUTION];
break;
case GL_TEXTURE_COLOR_TABLE_SGI:
if (!ctx->Extensions.SGI_texture_color_table) {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTable(target)");
return;
}
table = &(texUnit->ColorTable);
break;
case GL_POST_CONVOLUTION_COLOR_TABLE:
table = &ctx->ColorTable[COLORTABLE_POSTCONVOLUTION];
break;
case GL_POST_COLOR_MATRIX_COLOR_TABLE:
table = &ctx->ColorTable[COLORTABLE_POSTCOLORMATRIX];
break;
default:
/* try texture targets */
{
struct gl_texture_object *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, "glGetColorTable(target)");
return;
}
}
}
ASSERT(table);
if (table->Size <= 0) {
return;
}
switch (table->_BaseFormat) {
case GL_ALPHA:
{
GLuint i;
for (i = 0; i < table->Size; i++) {
rgba[i][RCOMP] = 0;
rgba[i][GCOMP] = 0;
rgba[i][BCOMP] = 0;
rgba[i][ACOMP] = table->TableF[i];
}
}
break;
case GL_LUMINANCE:
{
GLuint i;
for (i = 0; i < table->Size; i++) {
rgba[i][RCOMP] =
rgba[i][GCOMP] =
rgba[i][BCOMP] = table->TableF[i];
rgba[i][ACOMP] = 1.0F;
}
}
break;
case GL_LUMINANCE_ALPHA:
{
GLuint i;
for (i = 0; i < table->Size; i++) {
rgba[i][RCOMP] =
rgba[i][GCOMP] =
rgba[i][BCOMP] = table->TableF[i*2+0];
rgba[i][ACOMP] = table->TableF[i*2+1];
}
}
break;
case GL_INTENSITY:
{
GLuint i;
for (i = 0; i < table->Size; i++) {
rgba[i][RCOMP] =
rgba[i][GCOMP] =
rgba[i][BCOMP] =
rgba[i][ACOMP] = table->TableF[i];
}
}
break;
case GL_RGB:
{
GLuint i;
for (i = 0; i < table->Size; i++) {
rgba[i][RCOMP] = table->TableF[i*3+0];
rgba[i][GCOMP] = table->TableF[i*3+1];
rgba[i][BCOMP] = table->TableF[i*3+2];
rgba[i][ACOMP] = 1.0F;
}
}
break;
case GL_RGBA:
_mesa_memcpy(rgba, table->TableF, 4 * table->Size * sizeof(GLfloat));
break;
default:
_mesa_problem(ctx, "bad table format in glGetColorTable");
return;
}
data = _mesa_map_validate_pbo_dest(ctx,
1, &ctx->Pack, table->Size, 1, 1,
format, type, data,
"glGetColorTable");
if (!data)
return;
_mesa_pack_rgba_span_float(ctx, table->Size, rgba,
format, type, data, &ctx->Pack, 0x0);
_mesa_unmap_pbo_dest(ctx, &ctx->Pack);
}
static void GLAPIENTRY
_mesa_GetnColorTableARB( GLenum target, GLenum format, GLenum type,
GLsizei bufSize, GLvoid *data )
{
GET_CURRENT_CONTEXT(ctx);
struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
struct gl_color_table *table = NULL;
GLfloat rgba[MAX_COLOR_TABLE_SIZE][4];
GLbitfield transferOps = 0;
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
if (ctx->NewState) {
_mesa_update_state(ctx);
}
switch (target) {
case GL_SHARED_TEXTURE_PALETTE_EXT:
table = &ctx->Texture.Palette;
break;
default:
/* try texture targets */
{
struct gl_texture_object *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, "glGetColorTable(target)");
return;
}
}
}
ASSERT(table);
if (table->Size <= 0) {
return;
}
switch (table->_BaseFormat) {
case GL_ALPHA:
{
GLuint i;
for (i = 0; i < table->Size; i++) {
rgba[i][RCOMP] = 0;
rgba[i][GCOMP] = 0;
rgba[i][BCOMP] = 0;
rgba[i][ACOMP] = table->TableF[i];
}
}
break;
case GL_LUMINANCE:
{
GLuint i;
for (i = 0; i < table->Size; i++) {
rgba[i][RCOMP] =
rgba[i][GCOMP] =
rgba[i][BCOMP] = table->TableF[i];
rgba[i][ACOMP] = 1.0F;
}
}
break;
case GL_LUMINANCE_ALPHA:
{
GLuint i;
for (i = 0; i < table->Size; i++) {
rgba[i][RCOMP] =
rgba[i][GCOMP] =
rgba[i][BCOMP] = table->TableF[i*2+0];
rgba[i][ACOMP] = table->TableF[i*2+1];
}
}
break;
case GL_INTENSITY:
{
GLuint i;
for (i = 0; i < table->Size; i++) {
rgba[i][RCOMP] =
rgba[i][GCOMP] =
rgba[i][BCOMP] =
rgba[i][ACOMP] = table->TableF[i];
}
}
break;
case GL_RGB:
{
GLuint i;
for (i = 0; i < table->Size; i++) {
rgba[i][RCOMP] = table->TableF[i*3+0];
rgba[i][GCOMP] = table->TableF[i*3+1];
rgba[i][BCOMP] = table->TableF[i*3+2];
rgba[i][ACOMP] = 1.0F;
}
}
break;
case GL_RGBA:
memcpy(rgba, table->TableF, 4 * table->Size * sizeof(GLfloat));
break;
default:
_mesa_problem(ctx, "bad table format in glGetColorTable");
return;
}
data = _mesa_map_validate_pbo_dest(ctx,
1, &ctx->Pack, table->Size, 1, 1,
format, type, bufSize, data,
"glGetColorTable");
if (!data)
return;
/* TODO: is this correct? */
if(ctx->Color._ClampReadColor)
transferOps |= IMAGE_CLAMP_BIT;
_mesa_pack_rgba_span_float(ctx, table->Size, rgba,
format, type, data, &ctx->Pack, transferOps);
_mesa_unmap_pbo_dest(ctx, &ctx->Pack);
}
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);
}
}
