static void
make_state_key(GLcontext *ctx, struct state_key *key)
{
static const GLfloat zero[4] = { 0.0f, 0.0f, 0.0f, 0.0f };
static const GLfloat one[4] = { 1.0f, 1.0f, 1.0f, 1.0f };
memset(key, 0, sizeof(*key));
if (ctx->Pixel.RedBias != 0.0 || ctx->Pixel.RedScale != 1.0 ||
ctx->Pixel.GreenBias != 0.0 || ctx->Pixel.GreenScale != 1.0 ||
ctx->Pixel.BlueBias != 0.0 || ctx->Pixel.BlueScale != 1.0 ||
ctx->Pixel.AlphaBias != 0.0 || ctx->Pixel.AlphaScale != 1.0) {
key->scaleAndBias = 1;
}
if (!is_identity(ctx->ColorMatrixStack.Top->m)) {
key->colorMatrix = 1;
}
if (!TEST_EQ_4V(ctx->Pixel.PostColorMatrixScale, one) ||
!TEST_EQ_4V(ctx->Pixel.PostColorMatrixBias, zero)) {
key->colorMatrixPostScaleBias = 1;
}
key->pixelMaps = ctx->Pixel.MapColorFlag;
}
void GLAPIENTRY
_mesa_TexBumpParameterfvATI( GLenum pname, const GLfloat *param )
{
struct gl_texture_unit *texUnit;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (!ctx->Extensions.ATI_envmap_bumpmap) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glTexBumpParameterfvATI");
return;
}
texUnit = _mesa_get_current_tex_unit(ctx);
if (pname == GL_BUMP_ROT_MATRIX_ATI) {
if (TEST_EQ_4V(param, texUnit->RotMatrix))
return;
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
COPY_4FV(texUnit->RotMatrix, param);
}
else {
_mesa_error( ctx, GL_INVALID_ENUM, "glTexBumpParameter(pname)" );
return;
}
/* Drivers might want to know about this, instead of dedicated function
just shove it into TexEnv where it really belongs anyway */
if (ctx->Driver.TexEnv) {
(*ctx->Driver.TexEnv)( ctx, 0, pname, param );
}
}
/**
* Try to accumulate this glBitmap call in the bitmap cache.
* \return GL_TRUE for success, GL_FALSE if bitmap is too large, etc.
*/
static GLboolean
accum_bitmap(struct st_context *st,
GLint x, GLint y, GLsizei width, GLsizei height,
const struct gl_pixelstore_attrib *unpack,
const GLubyte *bitmap )
{
struct bitmap_cache *cache = st->bitmap.cache;
int px = -999, py = -999;
const GLfloat z = st->ctx->Current.RasterPos[2];
if (width > BITMAP_CACHE_WIDTH ||
height > BITMAP_CACHE_HEIGHT)
return GL_FALSE; /* too big to cache */
if (!cache->empty) {
px = x - cache->xpos; /* pos in buffer */
py = y - cache->ypos;
if (px < 0 || px + width > BITMAP_CACHE_WIDTH ||
py < 0 || py + height > BITMAP_CACHE_HEIGHT ||
!TEST_EQ_4V(st->ctx->Current.RasterColor, cache->color) ||
((fabs(z - cache->zpos) > Z_EPSILON))) {
/* This bitmap would extend beyond cache bounds, or the bitmap
* color is changing
* so flush and continue.
*/
st_flush_bitmap_cache(st);
}
}
if (cache->empty) {
/* Initialize. Center bitmap vertically in the buffer. */
px = 0;
py = (BITMAP_CACHE_HEIGHT - height) / 2;
cache->xpos = x;
cache->ypos = y - py;
cache->zpos = z;
cache->empty = GL_FALSE;
COPY_4FV(cache->color, st->ctx->Current.RasterColor);
}
assert(px != -999);
assert(py != -999);
if (x < cache->xmin)
cache->xmin = x;
if (y < cache->ymin)
cache->ymin = y;
if (x + width > cache->xmax)
cache->xmax = x + width;
if (y + height > cache->ymax)
cache->ymax = y + height;
/* create the transfer if needed */
create_cache_trans(st);
unpack_bitmap(st, px, py, width, height, unpack, bitmap,
cache->buffer, BITMAP_CACHE_WIDTH);
return GL_TRUE; /* accumulated */
}
/**
* Set the blending color.
*
* \param red red color component.
* \param green green color component.
* \param blue blue color component.
* \param alpha alpha color component.
*
* \sa glBlendColor().
*
* Clamps the parameters and updates gl_colorbuffer_attrib::BlendColor. On a
* change, flushes the vertices and notifies the driver via
* dd_function_table::BlendColor callback.
*/
void GLAPIENTRY
_mesa_BlendColor( GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha )
{
GLfloat tmp[4];
GET_CURRENT_CONTEXT(ctx);
tmp[0] = red;
tmp[1] = green;
tmp[2] = blue;
tmp[3] = alpha;
if (TEST_EQ_4V(tmp, ctx->Color.BlendColorUnclamped))
return;
FLUSH_VERTICES(ctx, _NEW_COLOR);
COPY_4FV( ctx->Color.BlendColorUnclamped, tmp );
ctx->Color.BlendColor[0] = CLAMP(tmp[0], 0.0F, 1.0F);
ctx->Color.BlendColor[1] = CLAMP(tmp[1], 0.0F, 1.0F);
ctx->Color.BlendColor[2] = CLAMP(tmp[2], 0.0F, 1.0F);
ctx->Color.BlendColor[3] = CLAMP(tmp[3], 0.0F, 1.0F);
if (ctx->Driver.BlendColor)
ctx->Driver.BlendColor(ctx, ctx->Color.BlendColor);
}
/**
* Enable or disable writing of frame buffer color components.
*
* \param red whether to mask writing of the red color component.
* \param green whether to mask writing of the green color component.
* \param blue whether to mask writing of the blue color component.
* \param alpha whether to mask writing of the alpha color component.
*
* \sa glColorMask().
*
* Sets the appropriate value of gl_colorbuffer_attrib::ColorMask. On a
* change, flushes the vertices and notifies the driver via the
* dd_function_table::ColorMask callback.
*/
void GLAPIENTRY
_mesa_ColorMask( GLboolean red, GLboolean green,
GLboolean blue, GLboolean alpha )
{
GET_CURRENT_CONTEXT(ctx);
GLubyte tmp[4];
GLuint i;
GLboolean flushed;
if (MESA_VERBOSE & VERBOSE_API)
_mesa_debug(ctx, "glColorMask(%d, %d, %d, %d)\n",
red, green, blue, alpha);
/* Shouldn't have any information about channel depth in core mesa
* -- should probably store these as the native booleans:
*/
tmp[RCOMP] = red ? 0xff : 0x0;
tmp[GCOMP] = green ? 0xff : 0x0;
tmp[BCOMP] = blue ? 0xff : 0x0;
tmp[ACOMP] = alpha ? 0xff : 0x0;
flushed = GL_FALSE;
for (i = 0; i < ctx->Const.MaxDrawBuffers; i++) {
if (!TEST_EQ_4V(tmp, ctx->Color.ColorMask[i])) {
if (!flushed) {
FLUSH_VERTICES(ctx, _NEW_COLOR);
}
flushed = GL_TRUE;
COPY_4UBV(ctx->Color.ColorMask[i], tmp);
}
}
if (ctx->Driver.ColorMask)
ctx->Driver.ColorMask( ctx, red, green, blue, alpha );
}
/**
* For GL_EXT_draw_buffers2 and GL3
*/
void GLAPIENTRY
_mesa_ColorMaski( GLuint buf, GLboolean red, GLboolean green,
GLboolean blue, GLboolean alpha )
{
GLubyte tmp[4];
GET_CURRENT_CONTEXT(ctx);
if (MESA_VERBOSE & VERBOSE_API)
_mesa_debug(ctx, "glColorMaskIndexed %u %d %d %d %d\n",
buf, red, green, blue, alpha);
if (buf >= ctx->Const.MaxDrawBuffers) {
_mesa_error(ctx, GL_INVALID_VALUE, "glColorMaskIndexed(buf=%u)", buf);
return;
}
/* Shouldn't have any information about channel depth in core mesa
* -- should probably store these as the native booleans:
*/
tmp[RCOMP] = red ? 0xff : 0x0;
tmp[GCOMP] = green ? 0xff : 0x0;
tmp[BCOMP] = blue ? 0xff : 0x0;
tmp[ACOMP] = alpha ? 0xff : 0x0;
if (TEST_EQ_4V(tmp, ctx->Color.ColorMask[buf]))
return;
FLUSH_VERTICES(ctx, _NEW_COLOR);
COPY_4UBV(ctx->Color.ColorMask[buf], tmp);
}
void GLAPIENTRY
_mesa_ClipPlane( GLenum plane, const GLdouble *eq )
{
GET_CURRENT_CONTEXT(ctx);
GLint p;
GLfloat equation[4];
ASSERT_OUTSIDE_BEGIN_END(ctx);
p = (GLint) plane - (GLint) GL_CLIP_PLANE0;
if (p < 0 || p >= (GLint) ctx->Const.MaxClipPlanes) {
_mesa_error( ctx, GL_INVALID_ENUM, "glClipPlane" );
return;
}
equation[0] = (GLfloat) eq[0];
equation[1] = (GLfloat) eq[1];
equation[2] = (GLfloat) eq[2];
equation[3] = (GLfloat) eq[3];
/*
* The equation is transformed by the transpose of the inverse of the
* current modelview matrix and stored in the resulting eye coordinates.
*
* KW: Eqn is then transformed to the current clip space, where user
* clipping now takes place. The clip-space equations are recalculated
* whenever the projection matrix changes.
*/
if (_math_matrix_is_dirty(ctx->ModelviewMatrixStack.Top))
_math_matrix_analyse( ctx->ModelviewMatrixStack.Top );
_mesa_transform_vector( equation, equation,
ctx->ModelviewMatrixStack.Top->inv );
if (TEST_EQ_4V(ctx->Transform.EyeUserPlane[p], equation))
return;
FLUSH_VERTICES(ctx, _NEW_TRANSFORM);
COPY_4FV(ctx->Transform.EyeUserPlane[p], equation);
/* Update derived state. This state also depends on the projection
* matrix, and is recalculated on changes to the projection matrix by
* code in _mesa_update_state().
*/
if (ctx->Transform.ClipPlanesEnabled & (1 << p)) {
if (_math_matrix_is_dirty(ctx->ProjectionMatrixStack.Top))
_math_matrix_analyse( ctx->ProjectionMatrixStack.Top );
_mesa_transform_vector( ctx->Transform._ClipUserPlane[p],
ctx->Transform.EyeUserPlane[p],
ctx->ProjectionMatrixStack.Top->inv );
}
if (ctx->Driver.ClipPlane)
ctx->Driver.ClipPlane( ctx, plane, equation );
}
static void set_texgen_matrix( r200ContextPtr rmesa,
GLuint unit,
GLfloat *s_plane,
GLfloat *t_plane )
{
static const GLfloat scale_identity[4] = { 1,1,1,1 };
if (!TEST_EQ_4V( s_plane, scale_identity) ||
!(TEST_EQ_4V( t_plane, scale_identity))) {
rmesa->TexGenEnabled |= R200_TEXMAT_0_ENABLE<<unit;
rmesa->TexGenMatrix[unit].m[0] = s_plane[0];
rmesa->TexGenMatrix[unit].m[4] = s_plane[1];
rmesa->TexGenMatrix[unit].m[8] = s_plane[2];
rmesa->TexGenMatrix[unit].m[12] = s_plane[3];
rmesa->TexGenMatrix[unit].m[1] = t_plane[0];
rmesa->TexGenMatrix[unit].m[5] = t_plane[1];
rmesa->TexGenMatrix[unit].m[9] = t_plane[2];
rmesa->TexGenMatrix[unit].m[13] = t_plane[3];
rmesa->NewGLState |= _NEW_TEXTURE_MATRIX;
}
}
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);
}
static void
set_env_color(GLcontext *ctx,
struct gl_texture_unit *texUnit,
const GLfloat *color)
{
GLfloat tmp[4];
tmp[0] = CLAMP(color[0], 0.0F, 1.0F);
tmp[1] = CLAMP(color[1], 0.0F, 1.0F);
tmp[2] = CLAMP(color[2], 0.0F, 1.0F);
tmp[3] = CLAMP(color[3], 0.0F, 1.0F);
if (TEST_EQ_4V(tmp, texUnit->EnvColor))
return;
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
COPY_4FV(texUnit->EnvColor, tmp);
}
void GLAPIENTRY
_mesa_ClearAccum( GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha )
{
GLfloat tmp[4];
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
tmp[0] = CLAMP( red, -1.0F, 1.0F );
tmp[1] = CLAMP( green, -1.0F, 1.0F );
tmp[2] = CLAMP( blue, -1.0F, 1.0F );
tmp[3] = CLAMP( alpha, -1.0F, 1.0F );
if (TEST_EQ_4V(tmp, ctx->Accum.ClearColor))
return;
COPY_4FV( ctx->Accum.ClearColor, tmp );
}
/**
* GL_EXT_texture_integer
*/
void GLAPIENTRY
_mesa_ClearColorIiEXT(GLint r, GLint g, GLint b, GLint a)
{
GLint tmp[4];
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
tmp[0] = r;
tmp[1] = g;
tmp[2] = b;
tmp[3] = a;
if (TEST_EQ_4V(tmp, ctx->Color.ClearColor.i))
return; /* no change */
FLUSH_VERTICES(ctx, _NEW_COLOR);
COPY_4V(ctx->Color.ClearColor.i, tmp);
}
/**
* Specify the clear values for the color buffers.
*
* \param red red color component.
* \param green green color component.
* \param blue blue color component.
* \param alpha alpha component.
*
* \sa glClearColor().
*
* Clamps the parameters and updates gl_colorbuffer_attrib::ClearColor. On a
* change, flushes the vertices and notifies the driver via the
* dd_function_table::ClearColor callback.
*/
void GLAPIENTRY
_mesa_ClearColor( GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha )
{
GLfloat tmp[4];
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
tmp[0] = red;
tmp[1] = green;
tmp[2] = blue;
tmp[3] = alpha;
if (TEST_EQ_4V(tmp, ctx->Color.ClearColor.f))
return; /* no change */
FLUSH_VERTICES(ctx, _NEW_COLOR);
COPY_4V(ctx->Color.ClearColor.f, tmp);
}
/**
* Set the blending color.
*
* \param red red color component.
* \param green green color component.
* \param blue blue color component.
* \param alpha alpha color component.
*
* \sa glBlendColor().
*
* Clamps the parameters and updates gl_colorbuffer_attrib::BlendColor. On a
* change, flushes the vertices and notifies the driver via
* dd_function_table::BlendColor callback.
*/
void GLAPIENTRY
_mesa_BlendColor( GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha )
{
GLfloat tmp[4];
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
tmp[0] = CLAMP( red, 0.0F, 1.0F );
tmp[1] = CLAMP( green, 0.0F, 1.0F );
tmp[2] = CLAMP( blue, 0.0F, 1.0F );
tmp[3] = CLAMP( alpha, 0.0F, 1.0F );
if (TEST_EQ_4V(tmp, ctx->Color.BlendColor))
return;
FLUSH_VERTICES(ctx, _NEW_COLOR);
COPY_4FV( ctx->Color.BlendColor, tmp );
if (ctx->Driver.BlendColor)
(*ctx->Driver.BlendColor)(ctx, tmp);
}
void
_mesa_ClearColor( GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha )
{
GLfloat tmp[4];
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
tmp[0] = CLAMP(red, 0.0F, 1.0F);
tmp[1] = CLAMP(green, 0.0F, 1.0F);
tmp[2] = CLAMP(blue, 0.0F, 1.0F);
tmp[3] = CLAMP(alpha, 0.0F, 1.0F);
if (TEST_EQ_4V(tmp, ctx->Color.ClearColor))
return; /* no change */
FLUSH_VERTICES(ctx, _NEW_COLOR);
COPY_4V(ctx->Color.ClearColor, tmp);
if (ctx->Visual.rgbMode && ctx->Driver.ClearColor) {
/* it's OK to call glClearColor in CI mode but it should be a NOP */
(*ctx->Driver.ClearColor)(ctx, ctx->Color.ClearColor);
}
}
void GLAPIENTRY
_mesa_Fogfv( GLenum pname, const GLfloat *params )
{
GET_CURRENT_CONTEXT(ctx);
GLenum m;
switch (pname) {
case GL_FOG_MODE:
m = (GLenum) (GLint) *params;
switch (m) {
case GL_LINEAR:
ctx->Fog._PackedMode = FOG_LINEAR;
break;
case GL_EXP:
ctx->Fog._PackedMode = FOG_EXP;
break;
case GL_EXP2:
ctx->Fog._PackedMode = FOG_EXP2;
break;
default:
_mesa_error( ctx, GL_INVALID_ENUM, "glFog" );
return;
}
if (ctx->Fog.Mode == m)
return;
FLUSH_VERTICES(ctx, _NEW_FOG);
ctx->Fog.Mode = m;
ctx->Fog._PackedEnabledMode = ctx->Fog.Enabled ?
ctx->Fog._PackedMode : FOG_NONE;
break;
case GL_FOG_DENSITY:
if (*params<0.0F) {
_mesa_error( ctx, GL_INVALID_VALUE, "glFog" );
return;
}
if (ctx->Fog.Density == *params)
return;
FLUSH_VERTICES(ctx, _NEW_FOG);
ctx->Fog.Density = *params;
break;
case GL_FOG_START:
if (ctx->Fog.Start == *params)
return;
FLUSH_VERTICES(ctx, _NEW_FOG);
ctx->Fog.Start = *params;
break;
case GL_FOG_END:
if (ctx->Fog.End == *params)
return;
FLUSH_VERTICES(ctx, _NEW_FOG);
ctx->Fog.End = *params;
break;
case GL_FOG_INDEX:
if (ctx->API != API_OPENGL_COMPAT)
goto invalid_pname;
if (ctx->Fog.Index == *params)
return;
FLUSH_VERTICES(ctx, _NEW_FOG);
ctx->Fog.Index = *params;
break;
case GL_FOG_COLOR:
if (TEST_EQ_4V(ctx->Fog.Color, params))
return;
FLUSH_VERTICES(ctx, _NEW_FOG);
ctx->Fog.ColorUnclamped[0] = params[0];
ctx->Fog.ColorUnclamped[1] = params[1];
ctx->Fog.ColorUnclamped[2] = params[2];
ctx->Fog.ColorUnclamped[3] = params[3];
ctx->Fog.Color[0] = CLAMP(params[0], 0.0F, 1.0F);
ctx->Fog.Color[1] = CLAMP(params[1], 0.0F, 1.0F);
ctx->Fog.Color[2] = CLAMP(params[2], 0.0F, 1.0F);
ctx->Fog.Color[3] = CLAMP(params[3], 0.0F, 1.0F);
break;
case GL_FOG_COORDINATE_SOURCE_EXT: {
GLenum p = (GLenum) (GLint) *params;
if (ctx->API != API_OPENGL_COMPAT ||
(p != GL_FOG_COORDINATE_EXT && p != GL_FRAGMENT_DEPTH_EXT)) {
_mesa_error(ctx, GL_INVALID_ENUM, "glFog");
return;
}
if (ctx->Fog.FogCoordinateSource == p)
return;
FLUSH_VERTICES(ctx, _NEW_FOG);
ctx->Fog.FogCoordinateSource = p;
break;
}
case GL_FOG_DISTANCE_MODE_NV: {
GLenum p = (GLenum) (GLint) *params;
if (ctx->API != API_OPENGL_COMPAT || !ctx->Extensions.NV_fog_distance ||
(p != GL_EYE_RADIAL_NV && p != GL_EYE_PLANE && p != GL_EYE_PLANE_ABSOLUTE_NV)) {
_mesa_error(ctx, GL_INVALID_ENUM, "glFog");
return;
}
if (ctx->Fog.FogDistanceMode == p)
return;
FLUSH_VERTICES(ctx, _NEW_FOG);
ctx->Fog.FogDistanceMode = p;
break;
}
default:
goto invalid_pname;
}
if (ctx->Driver.Fogfv) {
ctx->Driver.Fogfv( ctx, pname, params );
}
return;
invalid_pname:
_mesa_error( ctx, GL_INVALID_ENUM, "glFog" );
return;
}
void
_mesa_Lightfv( GLenum light, GLenum pname, const GLfloat *params )
{
GET_CURRENT_CONTEXT(ctx);
GLint i = (GLint) (light - GL_LIGHT0);
struct gl_light *l = &ctx->Light.Light[i];
if (i < 0 || i >= (GLint) ctx->Const.MaxLights) {
_mesa_error( ctx, GL_INVALID_ENUM, "glLight" );
return;
}
switch (pname) {
case GL_AMBIENT:
if (TEST_EQ_4V(l->Ambient, params))
return;
FLUSH_VERTICES(ctx, _NEW_LIGHT);
COPY_4V( l->Ambient, params );
break;
case GL_DIFFUSE:
if (TEST_EQ_4V(l->Diffuse, params))
return;
FLUSH_VERTICES(ctx, _NEW_LIGHT);
COPY_4V( l->Diffuse, params );
break;
case GL_SPECULAR:
if (TEST_EQ_4V(l->Specular, params))
return;
FLUSH_VERTICES(ctx, _NEW_LIGHT);
COPY_4V( l->Specular, params );
break;
case GL_POSITION: {
GLfloat tmp[4];
/* transform position by ModelView matrix */
TRANSFORM_POINT( tmp, ctx->ModelView.m, params );
if (TEST_EQ_4V(l->EyePosition, tmp))
return;
FLUSH_VERTICES(ctx, _NEW_LIGHT);
COPY_4V(l->EyePosition, tmp);
if (l->EyePosition[3] != 0.0F)
l->_Flags |= LIGHT_POSITIONAL;
else
l->_Flags &= ~LIGHT_POSITIONAL;
break;
}
case GL_SPOT_DIRECTION: {
GLfloat tmp[4];
/* transform direction by inverse modelview */
if (ctx->ModelView.flags & MAT_DIRTY_INVERSE) {
_math_matrix_analyse( &ctx->ModelView );
}
TRANSFORM_NORMAL( tmp, params, ctx->ModelView.inv );
if (TEST_EQ_3V(l->EyeDirection, tmp))
return;
FLUSH_VERTICES(ctx, _NEW_LIGHT);
COPY_3V(l->EyeDirection, tmp);
break;
}
case GL_SPOT_EXPONENT:
if (params[0]<0.0 || params[0]>128.0) {
_mesa_error( ctx, GL_INVALID_VALUE, "glLight" );
return;
}
if (l->SpotExponent == params[0])
return;
FLUSH_VERTICES(ctx, _NEW_LIGHT);
l->SpotExponent = params[0];
_mesa_invalidate_spot_exp_table( l );
break;
case GL_SPOT_CUTOFF:
if ((params[0]<0.0 || params[0]>90.0) && params[0]!=180.0) {
_mesa_error( ctx, GL_INVALID_VALUE, "glLight" );
return;
}
if (l->SpotCutoff == params[0])
return;
FLUSH_VERTICES(ctx, _NEW_LIGHT);
l->SpotCutoff = params[0];
l->_CosCutoff = (GLfloat) cos(params[0]*DEG2RAD);
if (l->_CosCutoff < 0)
l->_CosCutoff = 0;
if (l->SpotCutoff != 180.0F)
l->_Flags |= LIGHT_SPOT;
else
l->_Flags &= ~LIGHT_SPOT;
break;
case GL_CONSTANT_ATTENUATION:
if (params[0]<0.0) {
_mesa_error( ctx, GL_INVALID_VALUE, "glLight" );
return;
}
if (l->ConstantAttenuation == params[0])
return;
FLUSH_VERTICES(ctx, _NEW_LIGHT);
l->ConstantAttenuation = params[0];
break;
case GL_LINEAR_ATTENUATION:
if (params[0]<0.0) {
_mesa_error( ctx, GL_INVALID_VALUE, "glLight" );
return;
}
if (l->LinearAttenuation == params[0])
return;
FLUSH_VERTICES(ctx, _NEW_LIGHT);
l->LinearAttenuation = params[0];
break;
case GL_QUADRATIC_ATTENUATION:
if (params[0]<0.0) {
_mesa_error( ctx, GL_INVALID_VALUE, "glLight" );
return;
}
if (l->QuadraticAttenuation == params[0])
return;
FLUSH_VERTICES(ctx, _NEW_LIGHT);
l->QuadraticAttenuation = params[0];
break;
default:
_mesa_error( ctx, GL_INVALID_ENUM, "glLight" );
return;
}
if (ctx->Driver.Lightfv)
ctx->Driver.Lightfv( ctx, light, pname, params );
}
void GLAPIENTRY
_mesa_TexEnvfv( GLenum target, GLenum pname, const GLfloat *param )
{
GLuint maxUnit;
GET_CURRENT_CONTEXT(ctx);
struct gl_texture_unit *texUnit;
ASSERT_OUTSIDE_BEGIN_END(ctx);
maxUnit = (target == GL_POINT_SPRITE_NV && pname == GL_COORD_REPLACE_NV)
? ctx->Const.MaxTextureCoordUnits : ctx->Const.MaxTextureImageUnits;
if (ctx->Texture.CurrentUnit >= maxUnit) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glTexEnvfv(current unit)");
return;
}
texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
#define TE_ERROR(errCode, msg, value) \
_mesa_error(ctx, errCode, msg, _mesa_lookup_enum_by_nr(value));
if (target == GL_TEXTURE_ENV) {
switch (pname) {
case GL_TEXTURE_ENV_MODE:
{
GLenum mode = (GLenum) (GLint) *param;
if (mode == GL_REPLACE_EXT)
mode = GL_REPLACE;
if (texUnit->EnvMode == mode)
return;
if (mode == GL_MODULATE ||
mode == GL_BLEND ||
mode == GL_DECAL ||
mode == GL_REPLACE ||
(mode == GL_ADD && ctx->Extensions.EXT_texture_env_add) ||
(mode == GL_COMBINE &&
(ctx->Extensions.EXT_texture_env_combine ||
ctx->Extensions.ARB_texture_env_combine))) {
/* legal */
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texUnit->EnvMode = mode;
}
else {
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", mode);
return;
}
}
break;
case GL_TEXTURE_ENV_COLOR:
{
GLfloat tmp[4];
tmp[0] = CLAMP( param[0], 0.0F, 1.0F );
tmp[1] = CLAMP( param[1], 0.0F, 1.0F );
tmp[2] = CLAMP( param[2], 0.0F, 1.0F );
tmp[3] = CLAMP( param[3], 0.0F, 1.0F );
if (TEST_EQ_4V(tmp, texUnit->EnvColor))
return;
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
COPY_4FV(texUnit->EnvColor, tmp);
}
break;
case GL_COMBINE_RGB:
if (ctx->Extensions.EXT_texture_env_combine ||
ctx->Extensions.ARB_texture_env_combine) {
const GLenum mode = (GLenum) (GLint) *param;
if (texUnit->Combine.ModeRGB == mode)
return;
switch (mode) {
case GL_REPLACE:
case GL_MODULATE:
case GL_ADD:
case GL_ADD_SIGNED:
case GL_INTERPOLATE:
/* OK */
break;
case GL_SUBTRACT:
if (!ctx->Extensions.ARB_texture_env_combine) {
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", mode);
return;
}
break;
case GL_DOT3_RGB_EXT:
case GL_DOT3_RGBA_EXT:
if (!ctx->Extensions.EXT_texture_env_dot3) {
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", mode);
return;
}
break;
case GL_DOT3_RGB:
case GL_DOT3_RGBA:
if (!ctx->Extensions.ARB_texture_env_dot3) {
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", mode);
return;
}
break;
case GL_MODULATE_ADD_ATI:
case GL_MODULATE_SIGNED_ADD_ATI:
case GL_MODULATE_SUBTRACT_ATI:
if (!ctx->Extensions.ATI_texture_env_combine3) {
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", mode);
return;
}
break;
default:
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", mode);
return;
}
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texUnit->Combine.ModeRGB = mode;
}
else {
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
return;
}
break;
case GL_COMBINE_ALPHA:
if (ctx->Extensions.EXT_texture_env_combine ||
ctx->Extensions.ARB_texture_env_combine) {
const GLenum mode = (GLenum) (GLint) *param;
if (texUnit->Combine.ModeA == mode)
return;
switch (mode) {
case GL_REPLACE:
case GL_MODULATE:
case GL_ADD:
case GL_ADD_SIGNED:
case GL_INTERPOLATE:
/* OK */
break;
case GL_SUBTRACT:
if (!ctx->Extensions.ARB_texture_env_combine) {
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", mode);
return;
}
break;
case GL_MODULATE_ADD_ATI:
case GL_MODULATE_SIGNED_ADD_ATI:
case GL_MODULATE_SUBTRACT_ATI:
if (!ctx->Extensions.ATI_texture_env_combine3) {
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", mode);
return;
}
break;
default:
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", mode);
return;
}
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texUnit->Combine.ModeA = mode;
}
else {
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
return;
}
break;
case GL_SOURCE0_RGB:
case GL_SOURCE1_RGB:
case GL_SOURCE2_RGB:
if (ctx->Extensions.EXT_texture_env_combine ||
ctx->Extensions.ARB_texture_env_combine) {
const GLenum source = (GLenum) (GLint) *param;
const GLuint s = pname - GL_SOURCE0_RGB;
if (texUnit->Combine.SourceRGB[s] == source)
return;
if (source == GL_TEXTURE ||
source == GL_CONSTANT ||
source == GL_PRIMARY_COLOR ||
source == GL_PREVIOUS ||
(ctx->Extensions.ARB_texture_env_crossbar &&
source >= GL_TEXTURE0 &&
source < GL_TEXTURE0 + ctx->Const.MaxTextureUnits) ||
(ctx->Extensions.ATI_texture_env_combine3 &&
(source == GL_ZERO || source == GL_ONE))) {
/* legal */
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texUnit->Combine.SourceRGB[s] = source;
}
else {
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", source);
return;
}
}
else {
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
return;
}
break;
case GL_SOURCE0_ALPHA:
case GL_SOURCE1_ALPHA:
case GL_SOURCE2_ALPHA:
if (ctx->Extensions.EXT_texture_env_combine ||
ctx->Extensions.ARB_texture_env_combine) {
const GLenum source = (GLenum) (GLint) *param;
const GLuint s = pname - GL_SOURCE0_ALPHA;
if (texUnit->Combine.SourceA[s] == source)
return;
if (source == GL_TEXTURE ||
source == GL_CONSTANT ||
source == GL_PRIMARY_COLOR ||
source == GL_PREVIOUS ||
(ctx->Extensions.ARB_texture_env_crossbar &&
source >= GL_TEXTURE0 &&
source < GL_TEXTURE0 + ctx->Const.MaxTextureUnits) ||
(ctx->Extensions.ATI_texture_env_combine3 &&
(source == GL_ZERO || source == GL_ONE))) {
/* legal */
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texUnit->Combine.SourceA[s] = source;
}
else {
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", source);
return;
}
}
else {
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
return;
}
break;
case GL_OPERAND0_RGB:
case GL_OPERAND1_RGB:
if (ctx->Extensions.EXT_texture_env_combine ||
ctx->Extensions.ARB_texture_env_combine) {
const GLenum operand = (GLenum) (GLint) *param;
const GLuint s = pname - GL_OPERAND0_RGB;
if (texUnit->Combine.OperandRGB[s] == operand)
return;
switch (operand) {
case GL_SRC_COLOR:
case GL_ONE_MINUS_SRC_COLOR:
case GL_SRC_ALPHA:
case GL_ONE_MINUS_SRC_ALPHA:
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texUnit->Combine.OperandRGB[s] = operand;
break;
default:
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", operand);
return;
}
}
else {
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
return;
}
break;
case GL_OPERAND0_ALPHA:
case GL_OPERAND1_ALPHA:
if (ctx->Extensions.EXT_texture_env_combine ||
ctx->Extensions.ARB_texture_env_combine) {
const GLenum operand = (GLenum) (GLint) *param;
if (texUnit->Combine.OperandA[pname-GL_OPERAND0_ALPHA] == operand)
return;
switch (operand) {
case GL_SRC_ALPHA:
case GL_ONE_MINUS_SRC_ALPHA:
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texUnit->Combine.OperandA[pname-GL_OPERAND0_ALPHA] = operand;
break;
default:
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", operand);
return;
}
}
else {
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
return;
}
break;
case GL_OPERAND2_RGB:
if (ctx->Extensions.ARB_texture_env_combine) {
const GLenum operand = (GLenum) (GLint) *param;
if (texUnit->Combine.OperandRGB[2] == operand)
return;
switch (operand) {
case GL_SRC_COLOR: /* ARB combine only */
case GL_ONE_MINUS_SRC_COLOR: /* ARB combine only */
case GL_SRC_ALPHA:
case GL_ONE_MINUS_SRC_ALPHA: /* ARB combine only */
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texUnit->Combine.OperandRGB[2] = operand;
break;
default:
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", operand);
return;
}
}
else if (ctx->Extensions.EXT_texture_env_combine) {
const GLenum operand = (GLenum) (GLint) *param;
if (texUnit->Combine.OperandRGB[2] == operand)
return;
/* operand must be GL_SRC_ALPHA which is the initial value - thus
don't need to actually compare the operand to the possible value */
else {
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", operand);
return;
}
}
else {
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
return;
}
break;
case GL_OPERAND2_ALPHA:
if (ctx->Extensions.ARB_texture_env_combine) {
const GLenum operand = (GLenum) (GLint) *param;
if (texUnit->Combine.OperandA[2] == operand)
return;
switch (operand) {
case GL_SRC_ALPHA:
case GL_ONE_MINUS_SRC_ALPHA: /* ARB combine only */
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texUnit->Combine.OperandA[2] = operand;
break;
default:
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", operand);
return;
}
}
else if (ctx->Extensions.EXT_texture_env_combine) {
const GLenum operand = (GLenum) (GLint) *param;
if (texUnit->Combine.OperandA[2] == operand)
return;
/* operand must be GL_SRC_ALPHA which is the initial value - thus
don't need to actually compare the operand to the possible value */
else {
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", operand);
return;
}
}
else {
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
return;
}
break;
case GL_RGB_SCALE:
if (ctx->Extensions.EXT_texture_env_combine ||
ctx->Extensions.ARB_texture_env_combine) {
GLuint newshift;
if (*param == 1.0) {
newshift = 0;
}
else if (*param == 2.0) {
newshift = 1;
}
else if (*param == 4.0) {
newshift = 2;
}
else {
_mesa_error( ctx, GL_INVALID_VALUE,
"glTexEnv(GL_RGB_SCALE not 1, 2 or 4)" );
return;
}
if (texUnit->Combine.ScaleShiftRGB == newshift)
return;
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texUnit->Combine.ScaleShiftRGB = newshift;
}
else {
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
return;
}
break;
case GL_ALPHA_SCALE:
if (ctx->Extensions.EXT_texture_env_combine ||
ctx->Extensions.ARB_texture_env_combine) {
GLuint newshift;
if (*param == 1.0) {
newshift = 0;
}
else if (*param == 2.0) {
newshift = 1;
}
else if (*param == 4.0) {
newshift = 2;
}
else {
_mesa_error( ctx, GL_INVALID_VALUE,
"glTexEnv(GL_ALPHA_SCALE not 1, 2 or 4)" );
return;
}
if (texUnit->Combine.ScaleShiftA == newshift)
return;
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texUnit->Combine.ScaleShiftA = newshift;
}
else {
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
return;
}
break;
default:
_mesa_error( ctx, GL_INVALID_ENUM, "glTexEnv(pname)" );
return;
}
}
else if (target == GL_TEXTURE_FILTER_CONTROL_EXT) {
/* GL_EXT_texture_lod_bias */
if (!ctx->Extensions.EXT_texture_lod_bias) {
_mesa_error( ctx, GL_INVALID_ENUM, "glTexEnv(target=0x%x)", target );
return;
}
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) {
const GLenum value = (GLenum) param[0];
if (value == GL_TRUE || value == GL_FALSE) {
/* It's kind of weird to set point state via glTexEnv,
* but that's what the spec calls for.
*/
const GLboolean state = (GLboolean) value;
if (ctx->Point.CoordReplace[ctx->Texture.CurrentUnit] == state)
return;
FLUSH_VERTICES(ctx, _NEW_POINT);
ctx->Point.CoordReplace[ctx->Texture.CurrentUnit] = state;
}
else {
_mesa_error( ctx, GL_INVALID_VALUE, "glTexEnv(param=0x%x)", value);
return;
}
}
else {
_mesa_error( ctx, GL_INVALID_ENUM, "glTexEnv(pname=0x%x)", pname );
return;
}
}
else {
_mesa_error( ctx, GL_INVALID_ENUM, "glTexEnv(target=0x%x)",target );
return;
}
if (MESA_VERBOSE&(VERBOSE_API|VERBOSE_TEXTURE))
_mesa_debug(ctx, "glTexEnv %s %s %.1f(%s) ...\n",
_mesa_lookup_enum_by_nr(target),
_mesa_lookup_enum_by_nr(pname),
*param,
_mesa_lookup_enum_by_nr((GLenum) (GLint) *param));
/* Tell device driver about the new texture environment */
if (ctx->Driver.TexEnv) {
(*ctx->Driver.TexEnv)( ctx, target, pname, param );
}
}
void GLAPIENTRY
_mesa_TexGenfv( GLenum coord, GLenum pname, const GLfloat *params )
{
struct gl_texture_unit *texUnit;
struct gl_texgen *texgen;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (MESA_VERBOSE&(VERBOSE_API|VERBOSE_TEXTURE))
_mesa_debug(ctx, "glTexGen %s %s %.1f(%s)...\n",
_mesa_lookup_enum_by_nr(coord),
_mesa_lookup_enum_by_nr(pname),
*params,
_mesa_lookup_enum_by_nr((GLenum) (GLint) *params));
if (ctx->Texture.CurrentUnit >= ctx->Const.MaxTextureCoordUnits) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glTexGen(current unit)");
return;
}
texUnit = _mesa_get_current_tex_unit(ctx);
texgen = get_texgen(texUnit, coord);
if (!texgen) {
_mesa_error(ctx, GL_INVALID_ENUM, "glTexGen(coord)");
return;
}
switch (pname) {
case GL_TEXTURE_GEN_MODE:
{
GLenum mode = (GLenum) (GLint) params[0];
GLbitfield bit = 0x0;
if (texgen->Mode == mode)
return;
switch (mode) {
case GL_OBJECT_LINEAR:
bit = TEXGEN_OBJ_LINEAR;
break;
case GL_EYE_LINEAR:
bit = TEXGEN_EYE_LINEAR;
break;
case GL_SPHERE_MAP:
if (coord == GL_S || coord == GL_T)
bit = TEXGEN_SPHERE_MAP;
break;
case GL_REFLECTION_MAP_NV:
if (coord != GL_Q)
bit = TEXGEN_REFLECTION_MAP_NV;
break;
case GL_NORMAL_MAP_NV:
if (coord != GL_Q)
bit = TEXGEN_NORMAL_MAP_NV;
break;
default:
; /* nop */
}
if (!bit) {
_mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(param)" );
return;
}
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texgen->Mode = mode;
texgen->_ModeBit = bit;
}
break;
case GL_OBJECT_PLANE:
{
if (TEST_EQ_4V(texgen->ObjectPlane, params))
return;
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
COPY_4FV(texgen->ObjectPlane, params);
}
break;
case GL_EYE_PLANE:
{
GLfloat tmp[4];
/* Transform plane equation by the inverse modelview matrix */
if (_math_matrix_is_dirty(ctx->ModelviewMatrixStack.Top)) {
_math_matrix_analyse(ctx->ModelviewMatrixStack.Top);
}
_mesa_transform_vector(tmp, params,
ctx->ModelviewMatrixStack.Top->inv);
if (TEST_EQ_4V(texgen->EyePlane, tmp))
return;
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
COPY_4FV(texgen->EyePlane, tmp);
}
break;
default:
_mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(pname)" );
return;
}
if (ctx->Driver.TexGen)
ctx->Driver.TexGen( ctx, coord, pname, params );
}
void GLAPIENTRY
_mesa_Fogfv( GLenum pname, const GLfloat *params )
{
GET_CURRENT_CONTEXT(ctx);
GLenum m;
ASSERT_OUTSIDE_BEGIN_END(ctx);
switch (pname) {
case GL_FOG_MODE:
m = (GLenum) (GLint) *params;
switch (m) {
case GL_LINEAR:
case GL_EXP:
case GL_EXP2:
break;
default:
_mesa_error( ctx, GL_INVALID_ENUM, "glFog" );
return;
}
if (ctx->Fog.Mode == m)
return;
FLUSH_VERTICES(ctx, _NEW_FOG);
ctx->Fog.Mode = m;
break;
case GL_FOG_DENSITY:
if (*params<0.0) {
_mesa_error( ctx, GL_INVALID_VALUE, "glFog" );
return;
}
if (ctx->Fog.Density == *params)
return;
FLUSH_VERTICES(ctx, _NEW_FOG);
ctx->Fog.Density = *params;
break;
case GL_FOG_START:
if (ctx->Fog.Start == *params)
return;
FLUSH_VERTICES(ctx, _NEW_FOG);
ctx->Fog.Start = *params;
UPDATE_FOG_SCALE(ctx);
break;
case GL_FOG_END:
if (ctx->Fog.End == *params)
return;
FLUSH_VERTICES(ctx, _NEW_FOG);
ctx->Fog.End = *params;
UPDATE_FOG_SCALE(ctx);
break;
case GL_FOG_INDEX:
if (ctx->Fog.Index == *params)
return;
FLUSH_VERTICES(ctx, _NEW_FOG);
ctx->Fog.Index = *params;
break;
case GL_FOG_COLOR:
if (TEST_EQ_4V(ctx->Fog.Color, params))
return;
FLUSH_VERTICES(ctx, _NEW_FOG);
ctx->Fog.Color[0] = CLAMP(params[0], 0.0F, 1.0F);
ctx->Fog.Color[1] = CLAMP(params[1], 0.0F, 1.0F);
ctx->Fog.Color[2] = CLAMP(params[2], 0.0F, 1.0F);
ctx->Fog.Color[3] = CLAMP(params[3], 0.0F, 1.0F);
break;
case GL_FOG_COORDINATE_SOURCE_EXT: {
GLenum p = (GLenum) (GLint) *params;
if (!ctx->Extensions.EXT_fog_coord ||
(p != GL_FOG_COORDINATE_EXT && p != GL_FRAGMENT_DEPTH_EXT)) {
_mesa_error(ctx, GL_INVALID_ENUM, "glFog");
return;
}
if (ctx->Fog.FogCoordinateSource == p)
return;
FLUSH_VERTICES(ctx, _NEW_FOG);
ctx->Fog.FogCoordinateSource = p;
break;
}
default:
_mesa_error( ctx, GL_INVALID_ENUM, "glFog" );
return;
}
if (ctx->Driver.Fogfv) {
(*ctx->Driver.Fogfv)( ctx, pname, params );
}
}
/**
* Leave meta state. This is like a light-weight version of glPopAttrib().
*/
void
_mesa_meta_end(struct gl_context *ctx)
{
struct save_state *save = &ctx->Meta->Save[--ctx->Meta->SaveStackDepth];
const GLbitfield state = save->SavedState;
if (state & MESA_META_ALPHA_TEST) {
if (ctx->Color.AlphaEnabled != save->AlphaEnabled)
_mesa_set_enable(ctx, GL_ALPHA_TEST, save->AlphaEnabled);
_mesa_AlphaFunc(save->AlphaFunc, save->AlphaRef);
}
if (state & MESA_META_BLEND) {
if (ctx->Color.BlendEnabled != save->BlendEnabled) {
_mesa_set_enable(ctx, GL_BLEND, (save->BlendEnabled & 1));
}
if (ctx->Color.ColorLogicOpEnabled != save->ColorLogicOpEnabled)
_mesa_set_enable(ctx, GL_COLOR_LOGIC_OP, save->ColorLogicOpEnabled);
}
if (state & MESA_META_COLOR_MASK) {
if (!TEST_EQ_4V(ctx->Color.ColorMask, save->ColorMask)) {
_mesa_ColorMask(save->ColorMask[0], save->ColorMask[1],
save->ColorMask[2], save->ColorMask[3]);
}
}
if (state & MESA_META_DEPTH_TEST) {
if (ctx->Depth.Test != save->Depth.Test)
_mesa_set_enable(ctx, GL_DEPTH_TEST, save->Depth.Test);
_mesa_DepthFunc(save->Depth.Func);
_mesa_DepthMask(save->Depth.Mask);
}
if (state & MESA_META_FOG) {
_mesa_set_enable(ctx, GL_FOG, save->Fog);
}
if (state & MESA_META_PIXEL_STORE) {
ctx->Pack = save->Pack;
ctx->Unpack = save->Unpack;
}
if (state & MESA_META_PIXEL_TRANSFER) {
ctx->Pixel.RedScale = save->RedScale;
ctx->Pixel.RedBias = save->RedBias;
ctx->Pixel.GreenScale = save->GreenScale;
ctx->Pixel.GreenBias = save->GreenBias;
ctx->Pixel.BlueScale = save->BlueScale;
ctx->Pixel.BlueBias = save->BlueBias;
ctx->Pixel.AlphaScale = save->AlphaScale;
ctx->Pixel.AlphaBias = save->AlphaBias;
ctx->Pixel.MapColorFlag = save->MapColorFlag;
/* XXX more state */
ctx->NewState |=_NEW_PIXEL;
}
if (state & MESA_META_RASTERIZATION) {
_mesa_PolygonMode(GL_FRONT, save->FrontPolygonMode);
_mesa_PolygonMode(GL_BACK, save->BackPolygonMode);
_mesa_set_enable(ctx, GL_POLYGON_STIPPLE, save->PolygonStipple);
_mesa_set_enable(ctx, GL_POLYGON_OFFSET_FILL, save->PolygonOffset);
_mesa_set_enable(ctx, GL_POLYGON_SMOOTH, save->PolygonSmooth);
_mesa_set_enable(ctx, GL_CULL_FACE, save->PolygonCull);
}
if (state & MESA_META_SCISSOR) {
_mesa_set_enable(ctx, GL_SCISSOR_TEST, save->Scissor.Enabled);
_mesa_Scissor(save->Scissor.X, save->Scissor.Y,
save->Scissor.Width, save->Scissor.Height);
}
if (state & MESA_META_STENCIL_TEST) {
const struct gl_stencil_attrib *stencil = &save->Stencil;
_mesa_set_enable(ctx, GL_STENCIL_TEST, stencil->Enabled);
_mesa_ClearStencil(stencil->Clear);
_mesa_StencilFunc(stencil->Function,
stencil->Ref,
stencil->ValueMask);
_mesa_StencilMask(stencil->WriteMask);
_mesa_StencilOp(stencil->FailFunc, stencil->ZFailFunc, stencil->ZPassFunc);
}
if (state & MESA_META_TEXTURE) {
GLuint tgt;
/* restore texenv for unit[0] */
_mesa_TexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, save->EnvMode);
/* restore texture objects for unit[0] only */
for (tgt = 0; tgt < NUM_TEXTURE_TARGETS; tgt++) {
if (ctx->Texture.Unit.CurrentTex[tgt] != save->CurrentTexture[tgt]) {
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
_mesa_reference_texobj(&ctx->Texture.Unit.CurrentTex[tgt],
save->CurrentTexture[tgt]);
}
_mesa_reference_texobj(&save->CurrentTexture[tgt], NULL);
}
/* Restore fixed function texture enables, texgen */
if (ctx->Texture.Unit.Enabled != save->TexEnabled) {
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
ctx->Texture.Unit.Enabled = save->TexEnabled;
}
if (ctx->Texture.Unit.TexGenEnabled != save->TexGenEnabled) {
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
ctx->Texture.Unit.TexGenEnabled = save->TexGenEnabled;
}
}
if (state & MESA_META_TRANSFORM) {
_mesa_MatrixMode(GL_TEXTURE);
_mesa_LoadMatrixf(save->TextureMatrix);
_mesa_MatrixMode(GL_MODELVIEW);
_mesa_LoadMatrixf(save->ModelviewMatrix);
_mesa_MatrixMode(GL_PROJECTION);
_mesa_LoadMatrixf(save->ProjectionMatrix);
_mesa_MatrixMode(save->MatrixMode);
}
if (state & MESA_META_CLIP) {
if (save->ClipPlanesEnabled) {
GLuint i;
for (i = 0; i < ctx->Const.MaxClipPlanes; i++) {
if (save->ClipPlanesEnabled & (1 << i)) {
_mesa_set_enable(ctx, GL_CLIP_PLANE0 + i, GL_TRUE);
}
}
}
}
if (state & MESA_META_VIEWPORT) {
if (save->ViewportX != ctx->Viewport.X ||
save->ViewportY != ctx->Viewport.Y ||
save->ViewportW != ctx->Viewport.Width ||
save->ViewportH != ctx->Viewport.Height) {
_mesa_set_viewport(ctx, save->ViewportX, save->ViewportY,
save->ViewportW, save->ViewportH);
}
_mesa_DepthRange(save->DepthNear, save->DepthFar);
}
/* misc */
if (save->Lighting) {
_mesa_set_enable(ctx, GL_LIGHTING, GL_TRUE);
}
if (save->RasterDiscard) {
_mesa_set_enable(ctx, GL_RASTERIZER_DISCARD, GL_TRUE);
}
}
void
_mesa_LightModelfv( GLenum pname, const GLfloat *params )
{
GLenum newenum;
GLboolean newbool;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
switch (pname) {
case GL_LIGHT_MODEL_AMBIENT:
if (TEST_EQ_4V( ctx->Light.Model.Ambient, params ))
return;
FLUSH_VERTICES(ctx, _NEW_LIGHT);
COPY_4V( ctx->Light.Model.Ambient, params );
break;
case GL_LIGHT_MODEL_LOCAL_VIEWER:
newbool = (params[0]!=0.0);
if (ctx->Light.Model.LocalViewer == newbool)
return;
FLUSH_VERTICES(ctx, _NEW_LIGHT);
ctx->Light.Model.LocalViewer = newbool;
break;
case GL_LIGHT_MODEL_TWO_SIDE:
newbool = (params[0]!=0.0);
if (ctx->Light.Model.TwoSide == newbool)
return;
FLUSH_VERTICES(ctx, _NEW_LIGHT);
ctx->Light.Model.TwoSide = newbool;
if (ctx->Light.Enabled && ctx->Light.Model.TwoSide)
ctx->_TriangleCaps |= DD_TRI_LIGHT_TWOSIDE;
else
ctx->_TriangleCaps &= ~DD_TRI_LIGHT_TWOSIDE;
break;
case GL_LIGHT_MODEL_COLOR_CONTROL:
if (params[0] == (GLfloat) GL_SINGLE_COLOR)
newenum = GL_SINGLE_COLOR;
else if (params[0] == (GLfloat) GL_SEPARATE_SPECULAR_COLOR)
newenum = GL_SEPARATE_SPECULAR_COLOR;
else {
_mesa_error( ctx, GL_INVALID_ENUM, "glLightModel(param)" );
return;
}
if (ctx->Light.Model.ColorControl == newenum)
return;
FLUSH_VERTICES(ctx, _NEW_LIGHT);
ctx->Light.Model.ColorControl = newenum;
if ((ctx->Light.Enabled &&
ctx->Light.Model.ColorControl==GL_SEPARATE_SPECULAR_COLOR)
|| ctx->Fog.ColorSumEnabled)
ctx->_TriangleCaps |= DD_SEPARATE_SPECULAR;
else
ctx->_TriangleCaps &= ~DD_SEPARATE_SPECULAR;
break;
default:
_mesa_error( ctx, GL_INVALID_ENUM, "glLightModel" );
break;
}
if (ctx->Driver.LightModelfv)
ctx->Driver.LightModelfv( ctx, pname, params );
}
