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1c78515d93994e529cb4fd8d009476c90c55365c
third_party_mesa3d/src/mesa/main/texenv.c
Mathias Fröhlich 1c78515d93 mesa: Add gl_point_attrib::CoordReplaceBits bitfield. 
The aim is to replace the CoordReplace array by
a bitfield. Until all drivers are converted,
establish the bitfield in parallel to the
CoordReplace array.

v2: Fix bitmask logic.

Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Signed-off-by: Mathias Fröhlich <Mathias.Froehlich@web.de>
2016-06-16 05:50:52 +02:00

762 lines
21 KiB
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/*
* Mesa 3-D graphics library
*
* Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
* Copyright (C) 2009 VMware, Inc. 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
* THE AUTHORS OR COPYRIGHT HOLDERS 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.
*/
/**
* \file texenv.c
*
* glTexEnv-related functions
*/
#include "main/glheader.h"
#include "main/context.h"
#include "main/blend.h"
#include "main/enums.h"
#include "main/macros.h"
#include "main/mtypes.h"
#include "main/state.h"
#include "main/texenv.h"
#include "main/texstate.h"
#define TE_ERROR(errCode, msg, value) \
_mesa_error(ctx, errCode, msg, _mesa_enum_to_string(value));
/** Set texture env mode */
static void
set_env_mode(struct gl_context *ctx,
struct gl_texture_unit *texUnit,
GLenum mode)
{
GLboolean legal;
if (texUnit->EnvMode == mode)
return;
switch (mode) {
case GL_MODULATE:
case GL_BLEND:
case GL_DECAL:
case GL_REPLACE:
case GL_ADD:
case GL_COMBINE:
legal = GL_TRUE;
break;
case GL_REPLACE_EXT:
mode = GL_REPLACE; /* GL_REPLACE_EXT != GL_REPLACE */
legal = GL_TRUE;
break;
case GL_COMBINE4_NV:
legal = ctx->Extensions.NV_texture_env_combine4;
break;
default:
legal = GL_FALSE;
}
if (legal) {
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texUnit->EnvMode = mode;
}
else {
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", mode);
}
}
static void
set_env_color(struct gl_context *ctx,
struct gl_texture_unit *texUnit,
const GLfloat *color)
{
if (TEST_EQ_4V(color, texUnit->EnvColorUnclamped))
return;
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
COPY_4FV(texUnit->EnvColorUnclamped, color);
texUnit->EnvColor[0] = CLAMP(color[0], 0.0F, 1.0F);
texUnit->EnvColor[1] = CLAMP(color[1], 0.0F, 1.0F);
texUnit->EnvColor[2] = CLAMP(color[2], 0.0F, 1.0F);
texUnit->EnvColor[3] = CLAMP(color[3], 0.0F, 1.0F);
}
/** Set an RGB or A combiner mode/function */
static void
set_combiner_mode(struct gl_context *ctx,
struct gl_texture_unit *texUnit,
GLenum pname, GLenum mode)
{
GLboolean legal;
switch (mode) {
case GL_REPLACE:
case GL_MODULATE:
case GL_ADD:
case GL_ADD_SIGNED:
case GL_INTERPOLATE:
legal = GL_TRUE;
break;
case GL_SUBTRACT:
legal = ctx->Extensions.ARB_texture_env_combine;
break;
case GL_DOT3_RGB_EXT:
case GL_DOT3_RGBA_EXT:
legal = (ctx->API == API_OPENGL_COMPAT &&
ctx->Extensions.EXT_texture_env_dot3 &&
pname == GL_COMBINE_RGB);
break;
case GL_DOT3_RGB:
case GL_DOT3_RGBA:
legal = (ctx->Extensions.ARB_texture_env_dot3 &&
pname == GL_COMBINE_RGB);
break;
case GL_MODULATE_ADD_ATI:
case GL_MODULATE_SIGNED_ADD_ATI:
case GL_MODULATE_SUBTRACT_ATI:
legal = (ctx->API == API_OPENGL_COMPAT &&
ctx->Extensions.ATI_texture_env_combine3);
break;
default:
legal = GL_FALSE;
}
if (!legal) {
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", mode);
return;
}
switch (pname) {
case GL_COMBINE_RGB:
if (texUnit->Combine.ModeRGB == mode)
return;
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texUnit->Combine.ModeRGB = mode;
break;
case GL_COMBINE_ALPHA:
if (texUnit->Combine.ModeA == mode)
return;
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texUnit->Combine.ModeA = mode;
break;
default:
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
}
}
/** Set an RGB or A combiner source term */
static void
set_combiner_source(struct gl_context *ctx,
struct gl_texture_unit *texUnit,
GLenum pname, GLenum param)
{
GLuint term;
GLboolean alpha, legal;
/*
* Translate pname to (term, alpha).
*
* The enums were given sequential values for a reason.
*/
switch (pname) {
case GL_SOURCE0_RGB:
case GL_SOURCE1_RGB:
case GL_SOURCE2_RGB:
case GL_SOURCE3_RGB_NV:
term = pname - GL_SOURCE0_RGB;
alpha = GL_FALSE;
break;
case GL_SOURCE0_ALPHA:
case GL_SOURCE1_ALPHA:
case GL_SOURCE2_ALPHA:
case GL_SOURCE3_ALPHA_NV:
term = pname - GL_SOURCE0_ALPHA;
alpha = GL_TRUE;
break;
default:
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
return;
}
if ((term == 3) && (ctx->API != API_OPENGL_COMPAT
|| !ctx->Extensions.NV_texture_env_combine4)) {
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
return;
}
assert(term < MAX_COMBINER_TERMS);
/*
* Error-check param (the source term)
*/
switch (param) {
case GL_TEXTURE:
case GL_CONSTANT:
case GL_PRIMARY_COLOR:
case GL_PREVIOUS:
legal = GL_TRUE;
break;
case GL_TEXTURE0:
case GL_TEXTURE1:
case GL_TEXTURE2:
case GL_TEXTURE3:
case GL_TEXTURE4:
case GL_TEXTURE5:
case GL_TEXTURE6:
case GL_TEXTURE7:
legal = (ctx->Extensions.ARB_texture_env_crossbar &&
param - GL_TEXTURE0 < ctx->Const.MaxTextureUnits);
break;
case GL_ZERO:
legal = (ctx->API == API_OPENGL_COMPAT &&
(ctx->Extensions.ATI_texture_env_combine3 ||
ctx->Extensions.NV_texture_env_combine4));
break;
case GL_ONE:
legal = (ctx->API == API_OPENGL_COMPAT &&
ctx->Extensions.ATI_texture_env_combine3);
break;
default:
legal = GL_FALSE;
}
if (!legal) {
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", param);
return;
}
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
if (alpha)
texUnit->Combine.SourceA[term] = param;
else
texUnit->Combine.SourceRGB[term] = param;
}
/** Set an RGB or A combiner operand term */
static void
set_combiner_operand(struct gl_context *ctx,
struct gl_texture_unit *texUnit,
GLenum pname, GLenum param)
{
GLuint term;
GLboolean alpha, legal;
/* The enums were given sequential values for a reason.
*/
switch (pname) {
case GL_OPERAND0_RGB:
case GL_OPERAND1_RGB:
case GL_OPERAND2_RGB:
case GL_OPERAND3_RGB_NV:
term = pname - GL_OPERAND0_RGB;
alpha = GL_FALSE;
break;
case GL_OPERAND0_ALPHA:
case GL_OPERAND1_ALPHA:
case GL_OPERAND2_ALPHA:
case GL_OPERAND3_ALPHA_NV:
term = pname - GL_OPERAND0_ALPHA;
alpha = GL_TRUE;
break;
default:
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
return;
}
if ((term == 3) && (ctx->API != API_OPENGL_COMPAT
|| !ctx->Extensions.NV_texture_env_combine4)) {
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
return;
}
assert(term < MAX_COMBINER_TERMS);
/*
* Error-check param (the source operand)
*/
switch (param) {
case GL_SRC_COLOR:
case GL_ONE_MINUS_SRC_COLOR:
/* The color input can only be used with GL_OPERAND[01]_RGB in the EXT
* version. In the ARB and NV versions and OpenGL ES 1.x they can be
* used for any RGB operand.
*/
legal = !alpha
&& ((term < 2) || ctx->Extensions.ARB_texture_env_combine
|| ctx->Extensions.NV_texture_env_combine4);
break;
case GL_ONE_MINUS_SRC_ALPHA:
/* GL_ONE_MINUS_SRC_ALPHA can only be used with
* GL_OPERAND[01]_(RGB|ALPHA) in the EXT version. In the ARB and NV
* versions and OpenGL ES 1.x it can be used for any operand.
*/
legal = (term < 2) || ctx->Extensions.ARB_texture_env_combine
|| ctx->Extensions.NV_texture_env_combine4;
break;
case GL_SRC_ALPHA:
legal = GL_TRUE;
break;
default:
legal = GL_FALSE;
}
if (!legal) {
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", param);
return;
}
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
if (alpha)
texUnit->Combine.OperandA[term] = param;
else
texUnit->Combine.OperandRGB[term] = param;
}
static void
set_combiner_scale(struct gl_context *ctx,
struct gl_texture_unit *texUnit,
GLenum pname, GLfloat scale)
{
GLuint shift;
if (scale == 1.0F) {
shift = 0;
}
else if (scale == 2.0F) {
shift = 1;
}
else if (scale == 4.0F) {
shift = 2;
}
else {
_mesa_error( ctx, GL_INVALID_VALUE,
"glTexEnv(GL_RGB_SCALE not 1, 2 or 4)" );
return;
}
switch (pname) {
case GL_RGB_SCALE:
if (texUnit->Combine.ScaleShiftRGB == shift)
return;
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texUnit->Combine.ScaleShiftRGB = shift;
break;
case GL_ALPHA_SCALE:
if (texUnit->Combine.ScaleShiftA == shift)
return;
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texUnit->Combine.ScaleShiftA = shift;
break;
default:
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
}
}
void GLAPIENTRY
_mesa_TexEnvfv( GLenum target, GLenum pname, const GLfloat *param )
{
const GLint iparam0 = (GLint) param[0];
struct gl_texture_unit *texUnit;
GLuint maxUnit;
GET_CURRENT_CONTEXT(ctx);
maxUnit = (target == GL_POINT_SPRITE_NV && pname == GL_COORD_REPLACE_NV)
? ctx->Const.MaxTextureCoordUnits : ctx->Const.MaxCombinedTextureImageUnits;
if (ctx->Texture.CurrentUnit >= maxUnit) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glTexEnvfv(current unit)");
return;
}
texUnit = _mesa_get_current_tex_unit(ctx);
if (target == GL_TEXTURE_ENV) {
switch (pname) {
case GL_TEXTURE_ENV_MODE:
set_env_mode(ctx, texUnit, (GLenum) iparam0);
break;
case GL_TEXTURE_ENV_COLOR:
set_env_color(ctx, texUnit, param);
break;
case GL_COMBINE_RGB:
case GL_COMBINE_ALPHA:
set_combiner_mode(ctx, texUnit, pname, (GLenum) iparam0);
break;
case GL_SOURCE0_RGB:
case GL_SOURCE1_RGB:
case GL_SOURCE2_RGB:
case GL_SOURCE3_RGB_NV:
case GL_SOURCE0_ALPHA:
case GL_SOURCE1_ALPHA:
case GL_SOURCE2_ALPHA:
case GL_SOURCE3_ALPHA_NV:
set_combiner_source(ctx, texUnit, pname, (GLenum) iparam0);
break;
case GL_OPERAND0_RGB:
case GL_OPERAND1_RGB:
case GL_OPERAND2_RGB:
case GL_OPERAND3_RGB_NV:
case GL_OPERAND0_ALPHA:
case GL_OPERAND1_ALPHA:
case GL_OPERAND2_ALPHA:
case GL_OPERAND3_ALPHA_NV:
set_combiner_operand(ctx, texUnit, pname, (GLenum) iparam0);
break;
case GL_RGB_SCALE:
case GL_ALPHA_SCALE:
set_combiner_scale(ctx, texUnit, pname, param[0]);
break;
default:
_mesa_error( ctx, GL_INVALID_ENUM, "glTexEnv(pname)" );
return;
}
}
else if (target == GL_TEXTURE_FILTER_CONTROL_EXT) {
if (pname == GL_TEXTURE_LOD_BIAS_EXT) {
if (texUnit->LodBias == param[0])
return;
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texUnit->LodBias = param[0];
}
else {
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
return;
}
}
else if (target == GL_POINT_SPRITE_NV) {
/* GL_ARB_point_sprite / GL_NV_point_sprite */
if (!ctx->Extensions.NV_point_sprite
&& !ctx->Extensions.ARB_point_sprite) {
_mesa_error( ctx, GL_INVALID_ENUM, "glTexEnv(target=0x%x)", target );
return;
}
if (pname == GL_COORD_REPLACE_NV) {
/* It's kind of weird to set point state via glTexEnv,
* but that's what the spec calls for.
*/
if (iparam0 == GL_TRUE) {
if (ctx->Point.CoordReplaceBits & (1u << ctx->Texture.CurrentUnit))
return;
ctx->Point.CoordReplaceBits |= (1u << ctx->Texture.CurrentUnit);
ctx->Point.CoordReplace[ctx->Texture.CurrentUnit] = GL_TRUE;
} else if (iparam0 == GL_FALSE) {
if (~(ctx->Point.CoordReplaceBits) & (1u << ctx->Texture.CurrentUnit))
return;
ctx->Point.CoordReplaceBits &= ~(1u << ctx->Texture.CurrentUnit);
ctx->Point.CoordReplace[ctx->Texture.CurrentUnit] = GL_FALSE;
} else {
_mesa_error( ctx, GL_INVALID_VALUE, "glTexEnv(param=0x%x)", iparam0);
return;
}
FLUSH_VERTICES(ctx, _NEW_POINT);
}
else {
_mesa_error( ctx, GL_INVALID_ENUM, "glTexEnv(pname=0x%x)", pname );
return;
}
}
else {
_mesa_error(ctx, GL_INVALID_ENUM, "glTexEnv(target=%s)",
_mesa_enum_to_string(target));
return;
}
if (MESA_VERBOSE&(VERBOSE_API|VERBOSE_TEXTURE))
_mesa_debug(ctx, "glTexEnv %s %s %.1f(%s) ...\n",
_mesa_enum_to_string(target),
_mesa_enum_to_string(pname),
*param,
_mesa_enum_to_string((GLenum) iparam0));
/* Tell device driver about the new texture environment */
if (ctx->Driver.TexEnv) {
ctx->Driver.TexEnv(ctx, target, pname, param);
}
}
void GLAPIENTRY
_mesa_TexEnvf( GLenum target, GLenum pname, GLfloat param )
{
GLfloat p[4];
p[0] = param;
p[1] = p[2] = p[3] = 0.0;
_mesa_TexEnvfv( target, pname, p );
}
void GLAPIENTRY
_mesa_TexEnvi( GLenum target, GLenum pname, GLint param )
{
GLfloat p[4];
p[0] = (GLfloat) param;
p[1] = p[2] = p[3] = 0.0;
_mesa_TexEnvfv( target, pname, p );
}
void GLAPIENTRY
_mesa_TexEnviv( GLenum target, GLenum pname, const GLint *param )
{
GLfloat p[4];
if (pname == GL_TEXTURE_ENV_COLOR) {
p[0] = INT_TO_FLOAT( param[0] );
p[1] = INT_TO_FLOAT( param[1] );
p[2] = INT_TO_FLOAT( param[2] );
p[3] = INT_TO_FLOAT( param[3] );
}
else {
p[0] = (GLfloat) param[0];
p[1] = p[2] = p[3] = 0; /* init to zero, just to be safe */
}
_mesa_TexEnvfv( target, pname, p );
}
/**
* Helper for glGetTexEnvi/f()
* \return value of queried pname or -1 if error.
*/
static GLint
get_texenvi(struct gl_context *ctx, const struct gl_texture_unit *texUnit,
GLenum pname)
{
switch (pname) {
case GL_TEXTURE_ENV_MODE:
return texUnit->EnvMode;
break;
case GL_COMBINE_RGB:
return texUnit->Combine.ModeRGB;
case GL_COMBINE_ALPHA:
return texUnit->Combine.ModeA;
case GL_SOURCE0_RGB:
case GL_SOURCE1_RGB:
case GL_SOURCE2_RGB: {
const unsigned rgb_idx = pname - GL_SOURCE0_RGB;
return texUnit->Combine.SourceRGB[rgb_idx];
}
case GL_SOURCE3_RGB_NV:
if (ctx->API == API_OPENGL_COMPAT && ctx->Extensions.NV_texture_env_combine4) {
return texUnit->Combine.SourceRGB[3];
}
else {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
}
break;
case GL_SOURCE0_ALPHA:
case GL_SOURCE1_ALPHA:
case GL_SOURCE2_ALPHA: {
const unsigned alpha_idx = pname - GL_SOURCE0_ALPHA;
return texUnit->Combine.SourceA[alpha_idx];
}
case GL_SOURCE3_ALPHA_NV:
if (ctx->API == API_OPENGL_COMPAT && ctx->Extensions.NV_texture_env_combine4) {
return texUnit->Combine.SourceA[3];
}
else {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
}
break;
case GL_OPERAND0_RGB:
case GL_OPERAND1_RGB:
case GL_OPERAND2_RGB: {
const unsigned op_rgb = pname - GL_OPERAND0_RGB;
return texUnit->Combine.OperandRGB[op_rgb];
}
case GL_OPERAND3_RGB_NV:
if (ctx->API == API_OPENGL_COMPAT && ctx->Extensions.NV_texture_env_combine4) {
return texUnit->Combine.OperandRGB[3];
}
else {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
}
break;
case GL_OPERAND0_ALPHA:
case GL_OPERAND1_ALPHA:
case GL_OPERAND2_ALPHA: {
const unsigned op_alpha = pname - GL_OPERAND0_ALPHA;
return texUnit->Combine.OperandA[op_alpha];
}
case GL_OPERAND3_ALPHA_NV:
if (ctx->API == API_OPENGL_COMPAT && ctx->Extensions.NV_texture_env_combine4) {
return texUnit->Combine.OperandA[3];
}
else {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
}
break;
case GL_RGB_SCALE:
return 1 << texUnit->Combine.ScaleShiftRGB;
case GL_ALPHA_SCALE:
return 1 << texUnit->Combine.ScaleShiftA;
default:
_mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
break;
}
return -1; /* error */
}
void GLAPIENTRY
_mesa_GetTexEnvfv( GLenum target, GLenum pname, GLfloat *params )
{
GLuint maxUnit;
const struct gl_texture_unit *texUnit;
GET_CURRENT_CONTEXT(ctx);
maxUnit = (target == GL_POINT_SPRITE_NV && pname == GL_COORD_REPLACE_NV)
? ctx->Const.MaxTextureCoordUnits : ctx->Const.MaxCombinedTextureImageUnits;
if (ctx->Texture.CurrentUnit >= maxUnit) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexEnvfv(current unit)");
return;
}
texUnit = _mesa_get_current_tex_unit(ctx);
if (target == GL_TEXTURE_ENV) {
if (pname == GL_TEXTURE_ENV_COLOR) {
if(ctx->NewState & (_NEW_BUFFERS | _NEW_FRAG_CLAMP))
_mesa_update_state(ctx);
if (_mesa_get_clamp_fragment_color(ctx, ctx->DrawBuffer))
COPY_4FV( params, texUnit->EnvColor );
else
COPY_4FV( params, texUnit->EnvColorUnclamped );
}
else {
GLint val = get_texenvi(ctx, texUnit, pname);
if (val >= 0) {
*params = (GLfloat) val;
}
}
}
else if (target == GL_TEXTURE_FILTER_CONTROL_EXT) {
if (pname == GL_TEXTURE_LOD_BIAS_EXT) {
*params = texUnit->LodBias;
}
else {
_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)" );
return;
}
}
else if (target == GL_POINT_SPRITE_NV) {
/* GL_ARB_point_sprite / GL_NV_point_sprite */
if (!ctx->Extensions.NV_point_sprite
&& !ctx->Extensions.ARB_point_sprite) {
_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnvfv(target)" );
return;
}
if (pname == GL_COORD_REPLACE_NV) {
if (ctx->Point.CoordReplaceBits & (1u << ctx->Texture.CurrentUnit))
*params = 1.0f;
else
*params = 0.0f;
}
else {
_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)" );
return;
}
}
else {
_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnvfv(target)" );
return;
}
}
void GLAPIENTRY
_mesa_GetTexEnviv( GLenum target, GLenum pname, GLint *params )
{
GLuint maxUnit;
const struct gl_texture_unit *texUnit;
GET_CURRENT_CONTEXT(ctx);
maxUnit = (target == GL_POINT_SPRITE_NV && pname == GL_COORD_REPLACE_NV)
? ctx->Const.MaxTextureCoordUnits : ctx->Const.MaxCombinedTextureImageUnits;
if (ctx->Texture.CurrentUnit >= maxUnit) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexEnviv(current unit)");
return;
}
texUnit = _mesa_get_current_tex_unit(ctx);
if (target == GL_TEXTURE_ENV) {
if (pname == GL_TEXTURE_ENV_COLOR) {
params[0] = FLOAT_TO_INT( texUnit->EnvColor[0] );
params[1] = FLOAT_TO_INT( texUnit->EnvColor[1] );
params[2] = FLOAT_TO_INT( texUnit->EnvColor[2] );
params[3] = FLOAT_TO_INT( texUnit->EnvColor[3] );
}
else {
GLint val = get_texenvi(ctx, texUnit, pname);
if (val >= 0) {
*params = val;
}
}
}
else if (target == GL_TEXTURE_FILTER_CONTROL_EXT) {
if (pname == GL_TEXTURE_LOD_BIAS_EXT) {
*params = (GLint) texUnit->LodBias;
}
else {
_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)" );
return;
}
}
else if (target == GL_POINT_SPRITE_NV) {
/* GL_ARB_point_sprite / GL_NV_point_sprite */
if (!ctx->Extensions.NV_point_sprite
&& !ctx->Extensions.ARB_point_sprite) {
_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnviv(target)" );
return;
}
if (pname == GL_COORD_REPLACE_NV) {
if (ctx->Point.CoordReplaceBits & (1u << ctx->Texture.CurrentUnit))
*params = GL_TRUE;
else
*params = GL_FALSE;
}
else {
_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)" );
return;
}
}
else {
_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnviv(target)" );
return;
}
}
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