void
i830_update_provoking_vertex(struct gl_context * ctx)
{
struct i830_context *i830 = i830_context(ctx);
I830_STATECHANGE(i830, I830_UPLOAD_RASTER_RULES);
i830->state.RasterRules[I830_RASTER_RULES] &= ~(LINE_STRIP_PROVOKE_VRTX_MASK |
TRI_FAN_PROVOKE_VRTX_MASK |
TRI_STRIP_PROVOKE_VRTX_MASK);
/* _NEW_LIGHT */
if (ctx->Light.ProvokingVertex == GL_LAST_VERTEX_CONVENTION) {
i830->state.RasterRules[I830_RASTER_RULES] |= (LINE_STRIP_PROVOKE_VRTX(1) |
TRI_FAN_PROVOKE_VRTX(2) |
TRI_STRIP_PROVOKE_VRTX(2));
} else {
i830->state.RasterRules[I830_RASTER_RULES] |= (LINE_STRIP_PROVOKE_VRTX(0) |
TRI_FAN_PROVOKE_VRTX(1) |
TRI_STRIP_PROVOKE_VRTX(0));
}
}
static void
i830ColorMask(struct gl_context * ctx,
GLboolean r, GLboolean g, GLboolean b, GLboolean a)
{
struct i830_context *i830 = i830_context(ctx);
GLuint tmp = 0;
DBG("%s r(%d) g(%d) b(%d) a(%d)\n", __FUNCTION__, r, g, b, a);
tmp = ((i830->state.Ctx[I830_CTXREG_ENABLES_2] & ~WRITEMASK_MASK) |
ENABLE_COLOR_MASK |
ENABLE_COLOR_WRITE |
((!r) << WRITEMASK_RED_SHIFT) |
((!g) << WRITEMASK_GREEN_SHIFT) |
((!b) << WRITEMASK_BLUE_SHIFT) | ((!a) << WRITEMASK_ALPHA_SHIFT));
if (tmp != i830->state.Ctx[I830_CTXREG_ENABLES_2]) {
I830_STATECHANGE(i830, I830_UPLOAD_CTX);
i830->state.Ctx[I830_CTXREG_ENABLES_2] = tmp;
}
}
/* =============================================================
* Hardware clipping
*/
static void
i830Scissor(struct gl_context * ctx, GLint x, GLint y, GLsizei w, GLsizei h)
{
struct i830_context *i830 = i830_context(ctx);
int x1, y1, x2, y2;
if (!ctx->DrawBuffer)
return;
DBG("%s %d,%d %dx%d\n", __FUNCTION__, x, y, w, h);
if (ctx->DrawBuffer->Name == 0) {
x1 = x;
y1 = ctx->DrawBuffer->Height - (y + h);
x2 = x + w - 1;
y2 = y1 + h - 1;
DBG("%s %d..%d,%d..%d (inverted)\n", __FUNCTION__, x1, x2, y1, y2);
}
else {
/* FBO - not inverted
*/
x1 = x;
y1 = y;
x2 = x + w - 1;
y2 = y + h - 1;
DBG("%s %d..%d,%d..%d (not inverted)\n", __FUNCTION__, x1, x2, y1, y2);
}
x1 = CLAMP(x1, 0, ctx->DrawBuffer->Width - 1);
y1 = CLAMP(y1, 0, ctx->DrawBuffer->Height - 1);
x2 = CLAMP(x2, 0, ctx->DrawBuffer->Width - 1);
y2 = CLAMP(y2, 0, ctx->DrawBuffer->Height - 1);
DBG("%s %d..%d,%d..%d (clamped)\n", __FUNCTION__, x1, x2, y1, y2);
I830_STATECHANGE(i830, I830_UPLOAD_BUFFERS);
i830->state.Buffer[I830_DESTREG_SR1] = (y1 << 16) | (x1 & 0xffff);
i830->state.Buffer[I830_DESTREG_SR2] = (y2 << 16) | (x2 & 0xffff);
}
/* In Mesa 3.5 we can reliably do native flatshading.
*/
static void i830ShadeModel(GLcontext *ctx, GLenum mode)
{
i830ContextPtr i830 = I830_CONTEXT(ctx);
I830_STATECHANGE(i830, I830_UPLOAD_CTX);
#define SHADE_MODE_MASK ((1<<10)|(1<<8)|(1<<6)|(1<<4))
i830->state.Ctx[I830_CTXREG_STATE3] &= ~SHADE_MODE_MASK;
if (mode == GL_FLAT) {
i830->state.Ctx[I830_CTXREG_STATE3] |= (ALPHA_SHADE_MODE(SHADE_MODE_FLAT) |
FOG_SHADE_MODE(SHADE_MODE_FLAT) |
SPEC_SHADE_MODE(SHADE_MODE_FLAT) |
COLOR_SHADE_MODE(SHADE_MODE_FLAT));
} else {
i830->state.Ctx[I830_CTXREG_STATE3] |= (ALPHA_SHADE_MODE(SHADE_MODE_LINEAR) |
FOG_SHADE_MODE(SHADE_MODE_LINEAR) |
SPEC_SHADE_MODE(SHADE_MODE_LINEAR) |
COLOR_SHADE_MODE(SHADE_MODE_LINEAR));
}
}
static void i830ColorMask(GLcontext *ctx,
GLboolean r, GLboolean g,
GLboolean b, GLboolean a)
{
i830ContextPtr i830 = I830_CONTEXT( ctx );
GLuint tmp = 0;
if (INTEL_DEBUG&DEBUG_DRI)
fprintf(stderr, "%s r(%d) g(%d) b(%d) a(%d)\n", __FUNCTION__, r, g, b, a);
tmp = ((i830->state.Ctx[I830_CTXREG_ENABLES_2] & ~WRITEMASK_MASK) |
ENABLE_COLOR_MASK |
ENABLE_COLOR_WRITE |
((!r) << WRITEMASK_RED_SHIFT) |
((!g) << WRITEMASK_GREEN_SHIFT) |
((!b) << WRITEMASK_BLUE_SHIFT) |
((!a) << WRITEMASK_ALPHA_SHIFT));
if (tmp != i830->state.Ctx[I830_CTXREG_ENABLES_2]) {
I830_STATECHANGE(i830, I830_UPLOAD_CTX);
i830->state.Ctx[I830_CTXREG_ENABLES_2] = tmp;
}
}
/**
* Makes sure that the proper enables are set for LogicOp, Independant Alpha
* Blend, and Blending. It needs to be called from numerous places where we
* could change the LogicOp or Independant Alpha Blend without subsequent
* calls to glEnable.
*
* \todo
* This function is substantially different from the old i830-specific driver.
* I'm not sure which is correct.
*/
static void i830EvalLogicOpBlendState(GLcontext *ctx)
{
i830ContextPtr i830 = I830_CONTEXT(ctx);
I830_STATECHANGE(i830, I830_UPLOAD_CTX);
if (RGBA_LOGICOP_ENABLED(ctx)) {
i830->state.Ctx[I830_CTXREG_ENABLES_1] &= ~(ENABLE_COLOR_BLEND |
ENABLE_LOGIC_OP_MASK);
i830->state.Ctx[I830_CTXREG_ENABLES_1] |= (DISABLE_COLOR_BLEND |
ENABLE_LOGIC_OP);
} else if (ctx->Color.BlendEnabled) {
i830->state.Ctx[I830_CTXREG_ENABLES_1] &= ~(ENABLE_COLOR_BLEND |
ENABLE_LOGIC_OP_MASK);
i830->state.Ctx[I830_CTXREG_ENABLES_1] |= (ENABLE_COLOR_BLEND |
DISABLE_LOGIC_OP);
} else {
i830->state.Ctx[I830_CTXREG_ENABLES_1] &= ~(ENABLE_COLOR_BLEND |
ENABLE_LOGIC_OP_MASK);
i830->state.Ctx[I830_CTXREG_ENABLES_1] |= (DISABLE_COLOR_BLEND |
DISABLE_LOGIC_OP);
}
}
static void
i830StencilFuncSeparate(struct gl_context * ctx, GLenum face, GLenum func, GLint ref,
GLuint mask)
{
struct i830_context *i830 = i830_context(ctx);
int test = intel_translate_compare_func(func);
mask = mask & 0xff;
DBG("%s : func: %s, ref : 0x%x, mask: 0x%x\n", __FUNCTION__,
_mesa_lookup_enum_by_nr(func), ref, mask);
I830_STATECHANGE(i830, I830_UPLOAD_CTX);
i830->state.Ctx[I830_CTXREG_STATE4] &= ~MODE4_ENABLE_STENCIL_TEST_MASK;
i830->state.Ctx[I830_CTXREG_STATE4] |= (ENABLE_STENCIL_TEST_MASK |
STENCIL_TEST_MASK(mask));
i830->state.Ctx[I830_CTXREG_STENCILTST] &= ~(STENCIL_REF_VALUE_MASK |
ENABLE_STENCIL_TEST_FUNC_MASK);
i830->state.Ctx[I830_CTXREG_STENCILTST] |= (ENABLE_STENCIL_REF_VALUE |
ENABLE_STENCIL_TEST_FUNC |
STENCIL_REF_VALUE(ref) |
STENCIL_TEST_FUNC(test));
}
static void
i830_render_start(struct intel_context *intel)
{
GLcontext *ctx = &intel->ctx;
struct i830_context *i830 = i830_context(ctx);
TNLcontext *tnl = TNL_CONTEXT(ctx);
struct vertex_buffer *VB = &tnl->vb;
DECLARE_RENDERINPUTS(index_bitset);
GLuint v0 = _3DSTATE_VFT0_CMD;
GLuint v2 = _3DSTATE_VFT1_CMD;
GLuint mcsb1 = 0;
RENDERINPUTS_COPY(index_bitset, tnl->render_inputs_bitset);
/* Important:
*/
VB->AttribPtr[VERT_ATTRIB_POS] = VB->NdcPtr;
intel->vertex_attr_count = 0;
/* EMIT_ATTR's must be in order as they tell t_vertex.c how to
* build up a hardware vertex.
*/
if (RENDERINPUTS_TEST_RANGE(index_bitset, _TNL_FIRST_TEX, _TNL_LAST_TEX)) {
EMIT_ATTR(_TNL_ATTRIB_POS, EMIT_4F_VIEWPORT, VFT0_XYZW);
intel->coloroffset = 4;
}
else {
EMIT_ATTR(_TNL_ATTRIB_POS, EMIT_3F_VIEWPORT, VFT0_XYZ);
intel->coloroffset = 3;
}
if (RENDERINPUTS_TEST(index_bitset, _TNL_ATTRIB_POINTSIZE)) {
EMIT_ATTR(_TNL_ATTRIB_POINTSIZE, EMIT_1F, VFT0_POINT_WIDTH);
}
EMIT_ATTR(_TNL_ATTRIB_COLOR0, EMIT_4UB_4F_BGRA, VFT0_DIFFUSE);
intel->specoffset = 0;
if (RENDERINPUTS_TEST(index_bitset, _TNL_ATTRIB_COLOR1) ||
RENDERINPUTS_TEST(index_bitset, _TNL_ATTRIB_FOG)) {
if (RENDERINPUTS_TEST(index_bitset, _TNL_ATTRIB_COLOR1)) {
intel->specoffset = intel->coloroffset + 1;
EMIT_ATTR(_TNL_ATTRIB_COLOR1, EMIT_3UB_3F_BGR, VFT0_SPEC);
}
else
EMIT_PAD(3);
if (RENDERINPUTS_TEST(index_bitset, _TNL_ATTRIB_FOG))
EMIT_ATTR(_TNL_ATTRIB_FOG, EMIT_1UB_1F, VFT0_SPEC);
else
EMIT_PAD(1);
}
if (RENDERINPUTS_TEST_RANGE(index_bitset, _TNL_FIRST_TEX, _TNL_LAST_TEX)) {
int i, count = 0;
for (i = 0; i < I830_TEX_UNITS; i++) {
if (RENDERINPUTS_TEST(index_bitset, _TNL_ATTRIB_TEX(i))) {
GLuint sz = VB->TexCoordPtr[i]->size;
GLuint emit;
GLuint mcs = (i830->state.Tex[i][I830_TEXREG_MCS] &
~TEXCOORDTYPE_MASK);
switch (sz) {
case 1:
case 2:
emit = EMIT_2F;
sz = 2;
mcs |= TEXCOORDTYPE_CARTESIAN;
break;
case 3:
emit = EMIT_3F;
sz = 3;
mcs |= TEXCOORDTYPE_VECTOR;
break;
case 4:
emit = EMIT_3F_XYW;
sz = 3;
mcs |= TEXCOORDTYPE_HOMOGENEOUS;
break;
default:
continue;
};
EMIT_ATTR(_TNL_ATTRIB_TEX0 + i, emit, 0);
v2 |= VRTX_TEX_SET_FMT(count, SZ_TO_HW(sz));
mcsb1 |= (count + 8) << (i * 4);
if (mcs != i830->state.Tex[i][I830_TEXREG_MCS]) {
I830_STATECHANGE(i830, I830_UPLOAD_TEX(i));
i830->state.Tex[i][I830_TEXREG_MCS] = mcs;
}
count++;
}
}
v0 |= VFT0_TEX_COUNT(count);
}
/* Only need to change the vertex emit code if there has been a
* statechange to a new hardware vertex format:
*/
if (v0 != i830->state.Ctx[I830_CTXREG_VF] ||
v2 != i830->state.Ctx[I830_CTXREG_VF2] ||
mcsb1 != i830->state.Ctx[I830_CTXREG_MCSB1] ||
!RENDERINPUTS_EQUAL(index_bitset, i830->last_index_bitset)) {
int k;
I830_STATECHANGE(i830, I830_UPLOAD_CTX);
/* Must do this *after* statechange, so as not to affect
* buffered vertices reliant on the old state:
*/
intel->vertex_size =
_tnl_install_attrs(ctx,
intel->vertex_attrs,
intel->vertex_attr_count,
intel->ViewportMatrix.m, 0);
intel->vertex_size >>= 2;
i830->state.Ctx[I830_CTXREG_VF] = v0;
i830->state.Ctx[I830_CTXREG_VF2] = v2;
i830->state.Ctx[I830_CTXREG_MCSB1] = mcsb1;
RENDERINPUTS_COPY(i830->last_index_bitset, index_bitset);
k = i830_check_vertex_size(intel, intel->vertex_size);
assert(k);
}
void i830ChooseVertexState( GLcontext *ctx )
{
TNLcontext *tnl = TNL_CONTEXT(ctx);
i830ContextPtr imesa = I830_CONTEXT( ctx );
GLuint ind = I830_XYZW_BIT|I830_RGBA_BIT;
if (ctx->_TriangleCaps & DD_SEPARATE_SPECULAR)
ind |= I830_SPEC_BIT;
if (ctx->Fog.Enabled)
ind |= I830_FOG_BIT;
/* unit 1 */
if (ctx->Texture._ReallyEnabled & TEXTURE1_ANY)
ind |= I830_TEX1_BIT|I830_TEX0_BIT;
/* unit 0 */
else if (ctx->Texture._ReallyEnabled & TEXTURE0_ANY)
ind |= I830_TEX0_BIT;
imesa->SetupIndex = ind;
if (I830_DEBUG & (DEBUG_VERTS|DEBUG_STATE))
i830PrintSetupFlags( __FUNCTION__, ind );
if (ctx->_TriangleCaps & (DD_TRI_LIGHT_TWOSIDE|DD_TRI_UNFILLED)) {
tnl->Driver.Render.Interp = i830_interp_extras;
tnl->Driver.Render.CopyPV = i830_copy_pv_extras;
} else {
tnl->Driver.Render.Interp = setup_tab[ind].interp;
tnl->Driver.Render.CopyPV = setup_tab[ind].copy_pv;
}
if (setup_tab[ind].vertex_format != imesa->vertex_format) {
int vfmt = setup_tab[ind].vertex_format;
I830_STATECHANGE(imesa, I830_UPLOAD_CTX);
imesa->Setup[I830_CTXREG_VF] = ~(1<<31) & vfmt;
if (vfmt & (1<<31)) {
/* Proj texturing */
imesa->Setup[I830_CTXREG_VF2] = (STATE3D_VERTEX_FORMAT_2_CMD |
VRTX_TEX_SET_0_FMT(TEXCOORDFMT_3D) |
VRTX_TEX_SET_1_FMT(TEXCOORDFMT_3D) |
VRTX_TEX_SET_2_FMT(TEXCOORDFMT_3D) |
VRTX_TEX_SET_3_FMT(TEXCOORDFMT_3D));
i830UpdateTexUnitProj( ctx, 0, GL_TRUE );
i830UpdateTexUnitProj( ctx, 1, GL_TRUE );
} else {
/* Normal texturing */
imesa->Setup[I830_CTXREG_VF2] = (STATE3D_VERTEX_FORMAT_2_CMD |
VRTX_TEX_SET_0_FMT(TEXCOORDFMT_2D) |
VRTX_TEX_SET_1_FMT(TEXCOORDFMT_2D) |
VRTX_TEX_SET_2_FMT(TEXCOORDFMT_2D) |
VRTX_TEX_SET_3_FMT(TEXCOORDFMT_2D));
i830UpdateTexUnitProj( ctx, 0, GL_FALSE );
i830UpdateTexUnitProj( ctx, 1, GL_FALSE );
}
imesa->vertex_format = vfmt;
imesa->vertex_size = setup_tab[ind].vertex_size;
imesa->vertex_stride_shift = setup_tab[ind].vertex_stride_shift;
}
}
/* Recalculate all state from scratch. Perhaps not the most
* efficient, but this has gotten complex enough that we need
* something which is understandable and reliable.
*/
static GLboolean
i830_update_tex_unit(struct intel_context *intel, GLuint unit, GLuint ss3)
{
GLcontext *ctx = &intel->ctx;
struct i830_context *i830 = i830_context(ctx);
struct gl_texture_object *tObj = ctx->Texture.Unit[unit]._Current;
struct intel_texture_object *intelObj = intel_texture_object(tObj);
struct gl_texture_image *firstImage;
GLuint *state = i830->state.Tex[unit], format, pitch;
memset(state, 0, sizeof(state));
/*We need to refcount these. */
if (i830->state.tex_buffer[unit] != NULL) {
dri_bo_unreference(i830->state.tex_buffer[unit]);
i830->state.tex_buffer[unit] = NULL;
}
if (!intelObj->imageOverride && !intel_finalize_mipmap_tree(intel, unit))
return GL_FALSE;
/* Get first image here, since intelObj->firstLevel will get set in
* the intel_finalize_mipmap_tree() call above.
*/
firstImage = tObj->Image[0][intelObj->firstLevel];
if (intelObj->imageOverride) {
i830->state.tex_buffer[unit] = NULL;
i830->state.tex_offset[unit] = intelObj->textureOffset;
switch (intelObj->depthOverride) {
case 32:
format = MAPSURF_32BIT | MT_32BIT_ARGB8888;
break;
case 24:
default:
format = MAPSURF_32BIT | MT_32BIT_XRGB8888;
break;
case 16:
format = MAPSURF_16BIT | MT_16BIT_RGB565;
break;
}
pitch = intelObj->pitchOverride;
} else {
dri_bo_reference(intelObj->mt->region->buffer);
i830->state.tex_buffer[unit] = intelObj->mt->region->buffer;
i830->state.tex_offset[unit] = intel_miptree_image_offset(intelObj->mt,
0, intelObj->
firstLevel);
format = translate_texture_format(firstImage->TexFormat->MesaFormat);
pitch = intelObj->mt->pitch * intelObj->mt->cpp;
}
state[I830_TEXREG_TM0LI] = (_3DSTATE_LOAD_STATE_IMMEDIATE_2 |
(LOAD_TEXTURE_MAP0 << unit) | 4);
/* state[I830_TEXREG_TM0S0] = (TM0S0_USE_FENCE | */
/* t->intel.TextureOffset); */
state[I830_TEXREG_TM0S1] =
(((firstImage->Height - 1) << TM0S1_HEIGHT_SHIFT) |
((firstImage->Width - 1) << TM0S1_WIDTH_SHIFT) | format);
state[I830_TEXREG_TM0S2] =
((((pitch / 4) - 1) << TM0S2_PITCH_SHIFT) | TM0S2_CUBE_FACE_ENA_MASK);
{
if (tObj->Target == GL_TEXTURE_CUBE_MAP)
state[I830_TEXREG_CUBE] = (_3DSTATE_MAP_CUBE | MAP_UNIT(unit) |
CUBE_NEGX_ENABLE |
CUBE_POSX_ENABLE |
CUBE_NEGY_ENABLE |
CUBE_POSY_ENABLE |
CUBE_NEGZ_ENABLE | CUBE_POSZ_ENABLE);
else
state[I830_TEXREG_CUBE] = (_3DSTATE_MAP_CUBE | MAP_UNIT(unit));
}
{
GLuint minFilt, mipFilt, magFilt;
switch (tObj->MinFilter) {
case GL_NEAREST:
minFilt = FILTER_NEAREST;
mipFilt = MIPFILTER_NONE;
break;
case GL_LINEAR:
minFilt = FILTER_LINEAR;
mipFilt = MIPFILTER_NONE;
break;
case GL_NEAREST_MIPMAP_NEAREST:
minFilt = FILTER_NEAREST;
mipFilt = MIPFILTER_NEAREST;
break;
case GL_LINEAR_MIPMAP_NEAREST:
minFilt = FILTER_LINEAR;
mipFilt = MIPFILTER_NEAREST;
break;
case GL_NEAREST_MIPMAP_LINEAR:
minFilt = FILTER_NEAREST;
mipFilt = MIPFILTER_LINEAR;
break;
case GL_LINEAR_MIPMAP_LINEAR:
minFilt = FILTER_LINEAR;
mipFilt = MIPFILTER_LINEAR;
break;
default:
return GL_FALSE;
}
if (tObj->MaxAnisotropy > 1.0) {
minFilt = FILTER_ANISOTROPIC;
magFilt = FILTER_ANISOTROPIC;
}
else {
switch (tObj->MagFilter) {
case GL_NEAREST:
magFilt = FILTER_NEAREST;
break;
case GL_LINEAR:
magFilt = FILTER_LINEAR;
break;
default:
return GL_FALSE;
}
}
state[I830_TEXREG_TM0S3] = i830->lodbias_tm0s3[unit];
#if 0
/* YUV conversion:
*/
if (firstImage->TexFormat->MesaFormat == MESA_FORMAT_YCBCR ||
firstImage->TexFormat->MesaFormat == MESA_FORMAT_YCBCR_REV)
state[I830_TEXREG_TM0S3] |= SS2_COLORSPACE_CONVERSION;
#endif
state[I830_TEXREG_TM0S3] |= ((intelObj->lastLevel -
intelObj->firstLevel) *
4) << TM0S3_MIN_MIP_SHIFT;
state[I830_TEXREG_TM0S3] |= ((minFilt << TM0S3_MIN_FILTER_SHIFT) |
(mipFilt << TM0S3_MIP_FILTER_SHIFT) |
(magFilt << TM0S3_MAG_FILTER_SHIFT));
}
{
GLenum ws = tObj->WrapS;
GLenum wt = tObj->WrapT;
/* 3D textures not available on i830
*/
if (tObj->Target == GL_TEXTURE_3D)
return GL_FALSE;
state[I830_TEXREG_MCS] = (_3DSTATE_MAP_COORD_SET_CMD |
MAP_UNIT(unit) |
ENABLE_TEXCOORD_PARAMS |
ss3 |
ENABLE_ADDR_V_CNTL |
TEXCOORD_ADDR_V_MODE(translate_wrap_mode(wt))
| ENABLE_ADDR_U_CNTL |
TEXCOORD_ADDR_U_MODE(translate_wrap_mode
(ws)));
}
state[I830_TEXREG_TM0S4] = INTEL_PACKCOLOR8888(tObj->_BorderChan[0],
tObj->_BorderChan[1],
tObj->_BorderChan[2],
tObj->_BorderChan[3]);
I830_ACTIVESTATE(i830, I830_UPLOAD_TEX(unit), GL_TRUE);
/* memcmp was already disabled, but definitely won't work as the
* region might now change and that wouldn't be detected:
*/
I830_STATECHANGE(i830, I830_UPLOAD_TEX(unit));
return GL_TRUE;
}
static void
i830StencilOpSeparate(struct gl_context * ctx, GLenum face, GLenum fail, GLenum zfail,
GLenum zpass)
{
struct i830_context *i830 = i830_context(ctx);
int fop, dfop, dpop;
DBG("%s: fail : %s, zfail: %s, zpass : %s\n", __FUNCTION__,
_mesa_lookup_enum_by_nr(fail),
_mesa_lookup_enum_by_nr(zfail),
_mesa_lookup_enum_by_nr(zpass));
fop = 0;
dfop = 0;
dpop = 0;
switch (fail) {
case GL_KEEP:
fop = STENCILOP_KEEP;
break;
case GL_ZERO:
fop = STENCILOP_ZERO;
break;
case GL_REPLACE:
fop = STENCILOP_REPLACE;
break;
case GL_INCR:
fop = STENCILOP_INCRSAT;
break;
case GL_DECR:
fop = STENCILOP_DECRSAT;
break;
case GL_INCR_WRAP:
fop = STENCILOP_INCR;
break;
case GL_DECR_WRAP:
fop = STENCILOP_DECR;
break;
case GL_INVERT:
fop = STENCILOP_INVERT;
break;
default:
break;
}
switch (zfail) {
case GL_KEEP:
dfop = STENCILOP_KEEP;
break;
case GL_ZERO:
dfop = STENCILOP_ZERO;
break;
case GL_REPLACE:
dfop = STENCILOP_REPLACE;
break;
case GL_INCR:
dfop = STENCILOP_INCRSAT;
break;
case GL_DECR:
dfop = STENCILOP_DECRSAT;
break;
case GL_INCR_WRAP:
dfop = STENCILOP_INCR;
break;
case GL_DECR_WRAP:
dfop = STENCILOP_DECR;
break;
case GL_INVERT:
dfop = STENCILOP_INVERT;
break;
default:
break;
}
switch (zpass) {
case GL_KEEP:
dpop = STENCILOP_KEEP;
break;
case GL_ZERO:
dpop = STENCILOP_ZERO;
break;
case GL_REPLACE:
dpop = STENCILOP_REPLACE;
break;
case GL_INCR:
dpop = STENCILOP_INCRSAT;
break;
case GL_DECR:
dpop = STENCILOP_DECRSAT;
break;
case GL_INCR_WRAP:
dpop = STENCILOP_INCR;
break;
case GL_DECR_WRAP:
dpop = STENCILOP_DECR;
break;
case GL_INVERT:
dpop = STENCILOP_INVERT;
break;
default:
break;
}
I830_STATECHANGE(i830, I830_UPLOAD_CTX);
i830->state.Ctx[I830_CTXREG_STENCILTST] &= ~(STENCIL_OPS_MASK);
i830->state.Ctx[I830_CTXREG_STENCILTST] |= (ENABLE_STENCIL_PARMS |
STENCIL_FAIL_OP(fop) |
STENCIL_PASS_DEPTH_FAIL_OP
(dfop) |
STENCIL_PASS_DEPTH_PASS_OP
(dpop));
}
static void
i830Enable(struct gl_context * ctx, GLenum cap, GLboolean state)
{
struct i830_context *i830 = i830_context(ctx);
switch (cap) {
case GL_LIGHTING:
case GL_COLOR_SUM:
update_specular(ctx);
break;
case GL_ALPHA_TEST:
I830_STATECHANGE(i830, I830_UPLOAD_CTX);
i830->state.Ctx[I830_CTXREG_ENABLES_1] &= ~ENABLE_DIS_ALPHA_TEST_MASK;
if (state)
i830->state.Ctx[I830_CTXREG_ENABLES_1] |= ENABLE_ALPHA_TEST;
else
i830->state.Ctx[I830_CTXREG_ENABLES_1] |= DISABLE_ALPHA_TEST;
break;
case GL_BLEND:
i830EvalLogicOpBlendState(ctx);
break;
case GL_COLOR_LOGIC_OP:
i830EvalLogicOpBlendState(ctx);
/* Logicop doesn't seem to work at 16bpp:
*/
if (i830->intel.ctx.Visual.rgbBits == 16)
FALLBACK(&i830->intel, I830_FALLBACK_LOGICOP, state);
break;
case GL_DITHER:
I830_STATECHANGE(i830, I830_UPLOAD_CTX);
i830->state.Ctx[I830_CTXREG_ENABLES_2] &= ~ENABLE_DITHER;
if (state)
i830->state.Ctx[I830_CTXREG_ENABLES_2] |= ENABLE_DITHER;
else
i830->state.Ctx[I830_CTXREG_ENABLES_2] |= DISABLE_DITHER;
break;
case GL_DEPTH_TEST:
I830_STATECHANGE(i830, I830_UPLOAD_CTX);
i830->state.Ctx[I830_CTXREG_ENABLES_1] &= ~ENABLE_DIS_DEPTH_TEST_MASK;
if (state)
i830->state.Ctx[I830_CTXREG_ENABLES_1] |= ENABLE_DEPTH_TEST;
else
i830->state.Ctx[I830_CTXREG_ENABLES_1] |= DISABLE_DEPTH_TEST;
/* Also turn off depth writes when GL_DEPTH_TEST is disabled:
*/
i830DepthMask(ctx, ctx->Depth.Mask);
break;
case GL_SCISSOR_TEST:
I830_STATECHANGE(i830, I830_UPLOAD_BUFFERS);
if (state)
i830->state.Buffer[I830_DESTREG_SENABLE] =
(_3DSTATE_SCISSOR_ENABLE_CMD | ENABLE_SCISSOR_RECT);
else
i830->state.Buffer[I830_DESTREG_SENABLE] =
(_3DSTATE_SCISSOR_ENABLE_CMD | DISABLE_SCISSOR_RECT);
break;
case GL_LINE_SMOOTH:
I830_STATECHANGE(i830, I830_UPLOAD_CTX);
i830->state.Ctx[I830_CTXREG_AA] &= ~AA_LINE_ENABLE;
if (state)
i830->state.Ctx[I830_CTXREG_AA] |= AA_LINE_ENABLE;
else
i830->state.Ctx[I830_CTXREG_AA] |= AA_LINE_DISABLE;
break;
case GL_FOG:
I830_STATECHANGE(i830, I830_UPLOAD_CTX);
i830->state.Ctx[I830_CTXREG_ENABLES_1] &= ~ENABLE_DIS_FOG_MASK;
if (state)
i830->state.Ctx[I830_CTXREG_ENABLES_1] |= ENABLE_FOG;
else
i830->state.Ctx[I830_CTXREG_ENABLES_1] |= DISABLE_FOG;
break;
case GL_CULL_FACE:
i830CullFaceFrontFace(ctx, 0);
break;
case GL_TEXTURE_2D:
break;
case GL_STENCIL_TEST:
{
GLboolean hw_stencil = GL_FALSE;
if (ctx->DrawBuffer) {
struct intel_renderbuffer *irbStencil
= intel_get_renderbuffer(ctx->DrawBuffer, BUFFER_STENCIL);
hw_stencil = (irbStencil && irbStencil->region);
}
if (hw_stencil) {
I830_STATECHANGE(i830, I830_UPLOAD_CTX);
if (state) {
i830->state.Ctx[I830_CTXREG_ENABLES_1] |= ENABLE_STENCIL_TEST;
i830->state.Ctx[I830_CTXREG_ENABLES_2] |= ENABLE_STENCIL_WRITE;
}
else {
i830->state.Ctx[I830_CTXREG_ENABLES_1] &= ~ENABLE_STENCIL_TEST;
i830->state.Ctx[I830_CTXREG_ENABLES_2] &=
~ENABLE_STENCIL_WRITE;
i830->state.Ctx[I830_CTXREG_ENABLES_1] |= DISABLE_STENCIL_TEST;
i830->state.Ctx[I830_CTXREG_ENABLES_2] |=
DISABLE_STENCIL_WRITE;
}
}
else {
FALLBACK(&i830->intel, I830_FALLBACK_STENCIL, state);
}
}
break;
case GL_POLYGON_STIPPLE:
/* The stipple command worked on my 855GM box, but not my 845G.
* I'll do more testing later to find out exactly which hardware
* supports it. Disabled for now.
*/
if (i830->intel.hw_stipple &&
i830->intel.reduced_primitive == GL_TRIANGLES) {
I830_STATECHANGE(i830, I830_UPLOAD_STIPPLE);
i830->state.Stipple[I830_STPREG_ST1] &= ~ST1_ENABLE;
if (state)
i830->state.Stipple[I830_STPREG_ST1] |= ST1_ENABLE;
}
break;
default:
;
}
}
/**
* Sets both the blend equation (called "function" in i830 docs) and the
* blend function (called "factor" in i830 docs). This is done in a single
* function because some blend equations (i.e., \c GL_MIN and \c GL_MAX)
* change the interpretation of the blend function.
*/
static void
i830_set_blend_state(struct gl_context * ctx)
{
struct i830_context *i830 = i830_context(ctx);
int funcA;
int funcRGB;
int eqnA;
int eqnRGB;
int iab;
int s1;
funcRGB =
SRC_BLND_FACT(intel_translate_blend_factor(ctx->Color.Blend[0].SrcRGB))
| DST_BLND_FACT(intel_translate_blend_factor(ctx->Color.Blend[0].DstRGB));
switch (ctx->Color.Blend[0].EquationRGB) {
case GL_FUNC_ADD:
eqnRGB = BLENDFUNC_ADD;
break;
case GL_MIN:
eqnRGB = BLENDFUNC_MIN;
funcRGB = SRC_BLND_FACT(BLENDFACT_ONE) | DST_BLND_FACT(BLENDFACT_ONE);
break;
case GL_MAX:
eqnRGB = BLENDFUNC_MAX;
funcRGB = SRC_BLND_FACT(BLENDFACT_ONE) | DST_BLND_FACT(BLENDFACT_ONE);
break;
case GL_FUNC_SUBTRACT:
eqnRGB = BLENDFUNC_SUB;
break;
case GL_FUNC_REVERSE_SUBTRACT:
eqnRGB = BLENDFUNC_RVRSE_SUB;
break;
default:
fprintf(stderr, "[%s:%u] Invalid RGB blend equation (0x%04x).\n",
__FUNCTION__, __LINE__, ctx->Color.Blend[0].EquationRGB);
return;
}
funcA = SRC_ABLEND_FACT(intel_translate_blend_factor(ctx->Color.Blend[0].SrcA))
| DST_ABLEND_FACT(intel_translate_blend_factor(ctx->Color.Blend[0].DstA));
switch (ctx->Color.Blend[0].EquationA) {
case GL_FUNC_ADD:
eqnA = BLENDFUNC_ADD;
break;
case GL_MIN:
eqnA = BLENDFUNC_MIN;
funcA = SRC_BLND_FACT(BLENDFACT_ONE) | DST_BLND_FACT(BLENDFACT_ONE);
break;
case GL_MAX:
eqnA = BLENDFUNC_MAX;
funcA = SRC_BLND_FACT(BLENDFACT_ONE) | DST_BLND_FACT(BLENDFACT_ONE);
break;
case GL_FUNC_SUBTRACT:
eqnA = BLENDFUNC_SUB;
break;
case GL_FUNC_REVERSE_SUBTRACT:
eqnA = BLENDFUNC_RVRSE_SUB;
break;
default:
fprintf(stderr, "[%s:%u] Invalid alpha blend equation (0x%04x).\n",
__FUNCTION__, __LINE__, ctx->Color.Blend[0].EquationA);
return;
}
iab = eqnA | funcA
| _3DSTATE_INDPT_ALPHA_BLEND_CMD
| ENABLE_SRC_ABLEND_FACTOR | ENABLE_DST_ABLEND_FACTOR
| ENABLE_ALPHA_BLENDFUNC;
s1 = eqnRGB | funcRGB
| _3DSTATE_MODES_1_CMD
| ENABLE_SRC_BLND_FACTOR | ENABLE_DST_BLND_FACTOR
| ENABLE_COLR_BLND_FUNC;
if ((eqnA | funcA) != (eqnRGB | funcRGB))
iab |= ENABLE_INDPT_ALPHA_BLEND;
else
iab |= DISABLE_INDPT_ALPHA_BLEND;
if (iab != i830->state.Ctx[I830_CTXREG_IALPHAB] ||
s1 != i830->state.Ctx[I830_CTXREG_STATE1]) {
I830_STATECHANGE(i830, I830_UPLOAD_CTX);
i830->state.Ctx[I830_CTXREG_IALPHAB] = iab;
i830->state.Ctx[I830_CTXREG_STATE1] = s1;
}
/* This will catch a logicop blend equation. It will also ensure
* independant alpha blend is really in the correct state (either enabled
* or disabled) if blending is already enabled.
*/
i830EvalLogicOpBlendState(ctx);
if (0) {
fprintf(stderr,
"[%s:%u] STATE1: 0x%08x IALPHAB: 0x%08x blend is %sabled\n",
__FUNCTION__, __LINE__, i830->state.Ctx[I830_CTXREG_STATE1],
i830->state.Ctx[I830_CTXREG_IALPHAB],
(ctx->Color.BlendEnabled) ? "en" : "dis");
}
}
/* System to flush dma and emit state changes based on the rasterized
* primitive.
*/
void i830RasterPrimitive( GLcontext *ctx,
GLenum rprim,
GLuint hwprim )
{
i830ContextPtr imesa = I830_CONTEXT(ctx);
GLuint aa = imesa->Setup[I830_CTXREG_AA];
GLuint st1 = imesa->StippleSetup[I830_STPREG_ST1];
aa &= ~AA_LINE_ENABLE;
if (I830_DEBUG & DEBUG_PRIMS) {
/* Prints reduced prim, and hw prim */
char *prim_name = "Unknown";
switch(hwprim) {
case PRIM3D_POINTLIST:
prim_name = "PointList";
break;
case PRIM3D_LINELIST:
prim_name = "LineList";
break;
case PRIM3D_LINESTRIP:
prim_name = "LineStrip";
break;
case PRIM3D_TRILIST:
prim_name = "TriList";
break;
case PRIM3D_TRISTRIP:
prim_name = "TriStrip";
break;
case PRIM3D_TRIFAN:
prim_name = "TriFan";
break;
case PRIM3D_POLY:
prim_name = "Polygons";
break;
default:
break;
}
fprintf(stderr, "%s : rprim(%s), hwprim(%s)\n",
__FUNCTION__,
_mesa_lookup_enum_by_nr(rprim),
prim_name);
}
switch (rprim) {
case GL_TRIANGLES:
aa |= AA_LINE_DISABLE;
if (ctx->Polygon.StippleFlag)
st1 |= ST1_ENABLE;
else
st1 &= ~ST1_ENABLE;
break;
case GL_LINES:
st1 &= ~ST1_ENABLE;
if (ctx->Line.SmoothFlag) {
aa |= AA_LINE_ENABLE;
} else {
aa |= AA_LINE_DISABLE;
}
break;
case GL_POINTS:
st1 &= ~ST1_ENABLE;
aa |= AA_LINE_DISABLE;
break;
default:
return;
}
imesa->reduced_primitive = rprim;
if (aa != imesa->Setup[I830_CTXREG_AA]) {
I830_STATECHANGE(imesa, I830_UPLOAD_CTX);
imesa->Setup[I830_CTXREG_AA] = aa;
}
#if 0
if (st1 != imesa->StippleSetup[I830_STPREG_ST1]) {
I830_STATECHANGE(imesa, I830_UPLOAD_STIPPLE);
imesa->StippleSetup[I830_STPREG_ST1] = st1;
}
#endif
if (hwprim != imesa->hw_primitive) {
I830_STATECHANGE(imesa, 0);
imesa->hw_primitive = hwprim;
}
}
/* Recalculate all state from scratch. Perhaps not the most
* efficient, but this has gotten complex enough that we need
* something which is understandable and reliable.
*/
static GLboolean
i830_update_tex_unit(struct intel_context *intel, GLuint unit, GLuint ss3)
{
GLcontext *ctx = &intel->ctx;
struct i830_context *i830 = i830_context(ctx);
struct gl_texture_unit *tUnit = &ctx->Texture.Unit[unit];
struct gl_texture_object *tObj = tUnit->_Current;
struct intel_texture_object *intelObj = intel_texture_object(tObj);
struct gl_texture_image *firstImage;
GLuint *state = i830->state.Tex[unit], format, pitch;
GLint lodbias;
GLubyte border[4];
GLuint dst_x, dst_y;
memset(state, 0, sizeof(state));
/*We need to refcount these. */
if (i830->state.tex_buffer[unit] != NULL) {
drm_intel_bo_unreference(i830->state.tex_buffer[unit]);
i830->state.tex_buffer[unit] = NULL;
}
if (!intel_finalize_mipmap_tree(intel, unit))
return GL_FALSE;
/* Get first image here, since intelObj->firstLevel will get set in
* the intel_finalize_mipmap_tree() call above.
*/
firstImage = tObj->Image[0][intelObj->firstLevel];
intel_miptree_get_image_offset(intelObj->mt, intelObj->firstLevel, 0, 0,
&dst_x, &dst_y);
drm_intel_bo_reference(intelObj->mt->region->buffer);
i830->state.tex_buffer[unit] = intelObj->mt->region->buffer;
pitch = intelObj->mt->region->pitch * intelObj->mt->cpp;
/* XXX: This calculation is probably broken for tiled images with
* a non-page-aligned offset.
*/
i830->state.tex_offset[unit] = dst_x * intelObj->mt->cpp + dst_y * pitch;
format = translate_texture_format(firstImage->TexFormat,
firstImage->InternalFormat);
state[I830_TEXREG_TM0LI] = (_3DSTATE_LOAD_STATE_IMMEDIATE_2 |
(LOAD_TEXTURE_MAP0 << unit) | 4);
state[I830_TEXREG_TM0S1] =
(((firstImage->Height - 1) << TM0S1_HEIGHT_SHIFT) |
((firstImage->Width - 1) << TM0S1_WIDTH_SHIFT) | format);
if (intelObj->mt->region->tiling != I915_TILING_NONE) {
state[I830_TEXREG_TM0S1] |= TM0S1_TILED_SURFACE;
if (intelObj->mt->region->tiling == I915_TILING_Y)
state[I830_TEXREG_TM0S1] |= TM0S1_TILE_WALK;
}
state[I830_TEXREG_TM0S2] =
((((pitch / 4) - 1) << TM0S2_PITCH_SHIFT) | TM0S2_CUBE_FACE_ENA_MASK);
{
if (tObj->Target == GL_TEXTURE_CUBE_MAP)
state[I830_TEXREG_CUBE] = (_3DSTATE_MAP_CUBE | MAP_UNIT(unit) |
CUBE_NEGX_ENABLE |
CUBE_POSX_ENABLE |
CUBE_NEGY_ENABLE |
CUBE_POSY_ENABLE |
CUBE_NEGZ_ENABLE | CUBE_POSZ_ENABLE);
else
state[I830_TEXREG_CUBE] = (_3DSTATE_MAP_CUBE | MAP_UNIT(unit));
}
{
GLuint minFilt, mipFilt, magFilt;
switch (tObj->MinFilter) {
case GL_NEAREST:
minFilt = FILTER_NEAREST;
mipFilt = MIPFILTER_NONE;
break;
case GL_LINEAR:
minFilt = FILTER_LINEAR;
mipFilt = MIPFILTER_NONE;
break;
case GL_NEAREST_MIPMAP_NEAREST:
minFilt = FILTER_NEAREST;
mipFilt = MIPFILTER_NEAREST;
break;
case GL_LINEAR_MIPMAP_NEAREST:
minFilt = FILTER_LINEAR;
mipFilt = MIPFILTER_NEAREST;
break;
case GL_NEAREST_MIPMAP_LINEAR:
minFilt = FILTER_NEAREST;
mipFilt = MIPFILTER_LINEAR;
break;
case GL_LINEAR_MIPMAP_LINEAR:
minFilt = FILTER_LINEAR;
mipFilt = MIPFILTER_LINEAR;
break;
default:
return GL_FALSE;
}
if (tObj->MaxAnisotropy > 1.0) {
minFilt = FILTER_ANISOTROPIC;
magFilt = FILTER_ANISOTROPIC;
}
else {
switch (tObj->MagFilter) {
case GL_NEAREST:
magFilt = FILTER_NEAREST;
break;
case GL_LINEAR:
magFilt = FILTER_LINEAR;
break;
default:
return GL_FALSE;
}
}
lodbias = (int) ((tUnit->LodBias + tObj->LodBias) * 16.0);
if (lodbias < -64)
lodbias = -64;
if (lodbias > 63)
lodbias = 63;
state[I830_TEXREG_TM0S3] = ((lodbias << TM0S3_LOD_BIAS_SHIFT) &
TM0S3_LOD_BIAS_MASK);
#if 0
/* YUV conversion:
*/
if (firstImage->TexFormat->MesaFormat == MESA_FORMAT_YCBCR ||
firstImage->TexFormat->MesaFormat == MESA_FORMAT_YCBCR_REV)
state[I830_TEXREG_TM0S3] |= SS2_COLORSPACE_CONVERSION;
#endif
state[I830_TEXREG_TM0S3] |= ((intelObj->lastLevel -
intelObj->firstLevel) *
4) << TM0S3_MIN_MIP_SHIFT;
state[I830_TEXREG_TM0S3] |= ((minFilt << TM0S3_MIN_FILTER_SHIFT) |
(mipFilt << TM0S3_MIP_FILTER_SHIFT) |
(magFilt << TM0S3_MAG_FILTER_SHIFT));
}
{
GLenum ws = tObj->WrapS;
GLenum wt = tObj->WrapT;
/* 3D textures not available on i830
*/
if (tObj->Target == GL_TEXTURE_3D)
return GL_FALSE;
state[I830_TEXREG_MCS] = (_3DSTATE_MAP_COORD_SET_CMD |
MAP_UNIT(unit) |
ENABLE_TEXCOORD_PARAMS |
ss3 |
ENABLE_ADDR_V_CNTL |
TEXCOORD_ADDR_V_MODE(translate_wrap_mode(wt))
| ENABLE_ADDR_U_CNTL |
TEXCOORD_ADDR_U_MODE(translate_wrap_mode
(ws)));
}
/* convert border color from float to ubyte */
CLAMPED_FLOAT_TO_UBYTE(border[0], tObj->BorderColor.f[0]);
CLAMPED_FLOAT_TO_UBYTE(border[1], tObj->BorderColor.f[1]);
CLAMPED_FLOAT_TO_UBYTE(border[2], tObj->BorderColor.f[2]);
CLAMPED_FLOAT_TO_UBYTE(border[3], tObj->BorderColor.f[3]);
state[I830_TEXREG_TM0S4] = PACK_COLOR_8888(border[3],
border[0],
border[1],
border[2]);
I830_ACTIVESTATE(i830, I830_UPLOAD_TEX(unit), GL_TRUE);
/* memcmp was already disabled, but definitely won't work as the
* region might now change and that wouldn't be detected:
*/
I830_STATECHANGE(i830, I830_UPLOAD_TEX(unit));
return GL_TRUE;
}
static void i830TexEnv( GLcontext *ctx, GLenum target,
GLenum pname, const GLfloat *param )
{
i830ContextPtr i830 = I830_CONTEXT( ctx );
GLuint unit = ctx->Texture.CurrentUnit;
switch (pname) {
case GL_TEXTURE_ENV_COLOR:
#if 0
{
GLubyte r, g, b, a;
GLuint col;
UNCLAMPED_FLOAT_TO_UBYTE(r, param[RCOMP]);
UNCLAMPED_FLOAT_TO_UBYTE(g, param[GCOMP]);
UNCLAMPED_FLOAT_TO_UBYTE(b, param[BCOMP]);
UNCLAMPED_FLOAT_TO_UBYTE(a, param[ACOMP]);
col = ((a << 24) | (r << 16) | (g << 8) | b);
if (col != i830->state.TexEnv[unit][I830_TEXENVREG_COL1]) {
I830_STATECHANGE(i830, I830_UPLOAD_TEXENV);
i830->state.TexEnv[unit][I830_TEXENVREG_COL1] = col;
}
break;
}
#endif
case GL_TEXTURE_ENV_MODE:
case GL_COMBINE_RGB:
case GL_COMBINE_ALPHA:
case GL_SOURCE0_RGB:
case GL_SOURCE1_RGB:
case GL_SOURCE2_RGB:
case GL_SOURCE0_ALPHA:
case GL_SOURCE1_ALPHA:
case GL_SOURCE2_ALPHA:
case GL_OPERAND0_RGB:
case GL_OPERAND1_RGB:
case GL_OPERAND2_RGB:
case GL_OPERAND0_ALPHA:
case GL_OPERAND1_ALPHA:
case GL_OPERAND2_ALPHA:
case GL_RGB_SCALE:
case GL_ALPHA_SCALE:
break;
case GL_TEXTURE_LOD_BIAS: {
int b = (int) ((*param) * 16.0);
if (b > 63) b = 63;
if (b < -64) b = -64;
I830_STATECHANGE(i830, I830_UPLOAD_TEX(unit));
i830->state.Tex[unit][I830_TEXREG_TM0S3] &= ~TM0S3_LOD_BIAS_MASK;
i830->state.Tex[unit][I830_TEXREG_TM0S3] |=
((b << TM0S3_LOD_BIAS_SHIFT) & TM0S3_LOD_BIAS_MASK);
break;
}
default:
break;
}
}