/**************************************************************************
*
* Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
* 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, sub license, 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 (including the
* next paragraph) 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 NON-INFRINGEMENT.
* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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.
*
**************************************************************************/
#include "main/glheader.h"
#include "main/context.h"
#include "main/macros.h"
#include "main/enums.h"
#include "main/fbobject.h"
#include "main/dd.h"
#include "main/state.h"
#include "drivers/common/driverfuncs.h"
#include "intel_screen.h"
#include "intel_batchbuffer.h"
#include "intel_mipmap_tree.h"
#include "intel_fbo.h"
#include "intel_buffers.h"
#include "i830_context.h"
#include "i830_reg.h"
#define FILE_DEBUG_FLAG DEBUG_STATE
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
i830StencilMaskSeparate(struct gl_context * ctx, GLenum face, GLuint mask)
{
struct i830_context *i830 = i830_context(ctx);
DBG("%s : mask 0x%x\n", __FUNCTION__, mask);
mask = mask & 0xff;
I830_STATECHANGE(i830, I830_UPLOAD_CTX);
i830->state.Ctx[I830_CTXREG_STATE4] &= ~MODE4_ENABLE_STENCIL_WRITE_MASK;
i830->state.Ctx[I830_CTXREG_STATE4] |= (ENABLE_STENCIL_WRITE_MASK |
STENCIL_WRITE_MASK(mask));
}
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
i830AlphaFunc(struct gl_context * ctx, GLenum func, GLfloat ref)
{
struct i830_context *i830 = i830_context(ctx);
int test = intel_translate_compare_func(func);
GLubyte refByte;
GLuint refInt;
UNCLAMPED_FLOAT_TO_UBYTE(refByte, ref);
refInt = (GLuint) refByte;
I830_STATECHANGE(i830, I830_UPLOAD_CTX);
i830->state.Ctx[I830_CTXREG_STATE2] &= ~ALPHA_TEST_REF_MASK;
i830->state.Ctx[I830_CTXREG_STATE2] |= (ENABLE_ALPHA_TEST_FUNC |
ENABLE_ALPHA_REF_VALUE |
ALPHA_TEST_FUNC(test) |
ALPHA_REF_VALUE(refInt));
}
/**
* 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(struct gl_context * ctx)
{
struct i830_context *i830 = i830_context(ctx);
I830_STATECHANGE(i830, I830_UPLOAD_CTX);
if (ctx->Color.ColorLogicOpEnabled) {
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
i830BlendColor(struct gl_context * ctx, const GLfloat color[4])
{
struct i830_context *i830 = i830_context(ctx);
GLubyte r, g, b, a;
DBG("%s\n", __FUNCTION__);
UNCLAMPED_FLOAT_TO_UBYTE(r, color[RCOMP]);
UNCLAMPED_FLOAT_TO_UBYTE(g, color[GCOMP]);
UNCLAMPED_FLOAT_TO_UBYTE(b, color[BCOMP]);
UNCLAMPED_FLOAT_TO_UBYTE(a, color[ACOMP]);
I830_STATECHANGE(i830, I830_UPLOAD_CTX);
i830->state.Ctx[I830_CTXREG_BLENDCOLOR1] =
(a << 24) | (r << 16) | (g << 8) | b;
}
/**
* 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");
}
}
static void
i830BlendEquationSeparate(struct gl_context * ctx, GLenum modeRGB, GLenum modeA)
{
DBG("%s -> %s, %s\n", __FUNCTION__,
_mesa_lookup_enum_by_nr(modeRGB),
_mesa_lookup_enum_by_nr(modeA));
(void) modeRGB;
(void) modeA;
i830_set_blend_state(ctx);
}
static void
i830BlendFuncSeparate(struct gl_context * ctx, GLenum sfactorRGB,
GLenum dfactorRGB, GLenum sfactorA, GLenum dfactorA)
{
DBG("%s -> RGB(%s, %s) A(%s, %s)\n", __FUNCTION__,
_mesa_lookup_enum_by_nr(sfactorRGB),
_mesa_lookup_enum_by_nr(dfactorRGB),
_mesa_lookup_enum_by_nr(sfactorA),
_mesa_lookup_enum_by_nr(dfactorA));
(void) sfactorRGB;
(void) dfactorRGB;
(void) sfactorA;
(void) dfactorA;
i830_set_blend_state(ctx);
}
static void
i830DepthFunc(struct gl_context * ctx, GLenum func)
{
struct i830_context *i830 = i830_context(ctx);
int test = intel_translate_compare_func(func);
DBG("%s\n", __FUNCTION__);
I830_STATECHANGE(i830, I830_UPLOAD_CTX);
i830->state.Ctx[I830_CTXREG_STATE3] &= ~DEPTH_TEST_FUNC_MASK;
i830->state.Ctx[I830_CTXREG_STATE3] |= (ENABLE_DEPTH_TEST_FUNC |
DEPTH_TEST_FUNC(test));
}
static void
i830DepthMask(struct gl_context * ctx, GLboolean flag)
{
struct i830_context *i830 = i830_context(ctx);
DBG("%s flag (%d)\n", __FUNCTION__, flag);
if (!ctx->DrawBuffer || !ctx->DrawBuffer->Visual.depthBits)
flag = false;
I830_STATECHANGE(i830, I830_UPLOAD_CTX);
i830->state.Ctx[I830_CTXREG_ENABLES_2] &= ~ENABLE_DIS_DEPTH_WRITE_MASK;
if (flag && ctx->Depth.Test)
i830->state.Ctx[I830_CTXREG_ENABLES_2] |= ENABLE_DEPTH_WRITE;
else
i830->state.Ctx[I830_CTXREG_ENABLES_2] |= DISABLE_DEPTH_WRITE;
}
/** Called from ctx->Driver.Viewport() */
static void
i830Viewport(struct gl_context * ctx,
GLint x, GLint y, GLsizei width, GLsizei height)
{
intelCalcViewport(ctx);
}
/** Called from ctx->Driver.DepthRange() */
static void
i830DepthRange(struct gl_context * ctx, GLclampd nearval, GLclampd farval)
{
intelCalcViewport(ctx);
}
/* =============================================================
* Polygon stipple
*
* The i830 supports a 4x4 stipple natively, GL wants 32x32.
* Fortunately stipple is usually a repeating pattern.
*/
static void
i830PolygonStipple(struct gl_context * ctx, const GLubyte * mask)
{
struct i830_context *i830 = i830_context(ctx);
const GLubyte *m;
GLubyte p[4];
int i, j, k;
int active = (ctx->Polygon.StippleFlag &&
i830->intel.reduced_primitive == GL_TRIANGLES);
GLuint newMask;
if (active) {
I830_STATECHANGE(i830, I830_UPLOAD_STIPPLE);
i830->state.Stipple[I830_STPREG_ST1] &= ~ST1_ENABLE;
}
/* Use the already unpacked stipple data from the context rather than the
* uninterpreted mask passed in.
*/
mask = (const GLubyte *)ctx->PolygonStipple;
m = mask;
p[0] = mask[12] & 0xf;
p[0] |= p[0] << 4;
p[1] = mask[8] & 0xf;
p[1] |= p[1] << 4;
p[2] = mask[4] & 0xf;
p[2] |= p[2] << 4;
p[3] = mask[0] & 0xf;
p[3] |= p[3] << 4;
for (k = 0; k < 8; k++)
for (j = 3; j >= 0; j--)
for (i = 0; i < 4; i++, m++)
if (*m != p[j]) {
i830->intel.hw_stipple = 0;
return;
}
newMask = (((p[0] & 0xf) << 0) |
((p[1] & 0xf) << 4) |
((p[2] & 0xf) << 8) | ((p[3] & 0xf) << 12));
if (newMask == 0xffff || newMask == 0x0) {
/* this is needed to make conform pass */
i830->intel.hw_stipple = 0;
return;
}
i830->state.Stipple[I830_STPREG_ST1] &= ~0xffff;
i830->state.Stipple[I830_STPREG_ST1] |= newMask;
i830->intel.hw_stipple = 1;
if (active)
i830->state.Stipple[I830_STPREG_ST1] |= ST1_ENABLE;
}
/* =============================================================
* 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 (_mesa_is_winsys_fbo(ctx->DrawBuffer)) {
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);
}
static void
i830LogicOp(struct gl_context * ctx, GLenum opcode)
{
struct i830_context *i830 = i830_context(ctx);
int tmp = intel_translate_logic_op(opcode);
DBG("%s\n", __FUNCTION__);
I830_STATECHANGE(i830, I830_UPLOAD_CTX);
i830->state.Ctx[I830_CTXREG_STATE4] &= ~LOGICOP_MASK;
i830->state.Ctx[I830_CTXREG_STATE4] |= LOGIC_OP_FUNC(tmp);
}
static void
i830CullFaceFrontFace(struct gl_context * ctx, GLenum unused)
{
struct i830_context *i830 = i830_context(ctx);
GLuint mode;
DBG("%s\n", __FUNCTION__);
if (!ctx->Polygon.CullFlag) {
mode = CULLMODE_NONE;
}
else if (ctx->Polygon.CullFaceMode != GL_FRONT_AND_BACK) {
mode = CULLMODE_CW;
if (ctx->Polygon.CullFaceMode == GL_FRONT)
mode ^= (CULLMODE_CW ^ CULLMODE_CCW);
if (ctx->Polygon.FrontFace != GL_CCW)
mode ^= (CULLMODE_CW ^ CULLMODE_CCW);
}
else {
mode = CULLMODE_BOTH;
}
I830_STATECHANGE(i830, I830_UPLOAD_CTX);
i830->state.Ctx[I830_CTXREG_STATE3] &= ~CULLMODE_MASK;
i830->state.Ctx[I830_CTXREG_STATE3] |= ENABLE_CULL_MODE | mode;
}
static void
i830LineWidth(struct gl_context * ctx, GLfloat widthf)
{
struct i830_context *i830 = i830_context(ctx);
int width;
int state5;
DBG("%s\n", __FUNCTION__);
width = (int) (widthf * 2);
width = CLAMP(width, 1, 15);
state5 = i830->state.Ctx[I830_CTXREG_STATE5] & ~FIXED_LINE_WIDTH_MASK;
state5 |= (ENABLE_FIXED_LINE_WIDTH | FIXED_LINE_WIDTH(width));
if (state5 != i830->state.Ctx[I830_CTXREG_STATE5]) {
I830_STATECHANGE(i830, I830_UPLOAD_CTX);
i830->state.Ctx[I830_CTXREG_STATE5] = state5;
}
}
static void
i830PointSize(struct gl_context * ctx, GLfloat size)
{
struct i830_context *i830 = i830_context(ctx);
GLint point_size = (int) size;
DBG("%s\n", __FUNCTION__);
point_size = CLAMP(point_size, 1, 256);
I830_STATECHANGE(i830, I830_UPLOAD_CTX);
i830->state.Ctx[I830_CTXREG_STATE5] &= ~FIXED_POINT_WIDTH_MASK;
i830->state.Ctx[I830_CTXREG_STATE5] |= (ENABLE_FIXED_POINT_WIDTH |
FIXED_POINT_WIDTH(point_size));
}
/* =============================================================
* Color masks
*/
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;
}
}
static void
update_specular(struct gl_context * ctx)
{
struct i830_context *i830 = i830_context(ctx);
I830_STATECHANGE(i830, I830_UPLOAD_CTX);
i830->state.Ctx[I830_CTXREG_ENABLES_1] &= ~ENABLE_SPEC_ADD_MASK;
if (_mesa_need_secondary_color(ctx))
i830->state.Ctx[I830_CTXREG_ENABLES_1] |= ENABLE_SPEC_ADD;
else
i830->state.Ctx[I830_CTXREG_ENABLES_1] |= DISABLE_SPEC_ADD;
}
static void
i830LightModelfv(struct gl_context * ctx, GLenum pname, const GLfloat * param)
{
DBG("%s\n", __FUNCTION__);
if (pname == GL_LIGHT_MODEL_COLOR_CONTROL) {
update_specular(ctx);
}
}
/* In Mesa 3.5 we can reliably do native flatshading.
*/
static void
i830ShadeModel(struct gl_context * ctx, GLenum mode)
{
struct i830_context *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));
}
}
/* =============================================================
* Fog
*/
static void
i830Fogfv(struct gl_context * ctx, GLenum pname, const GLfloat * param)
{
struct i830_context *i830 = i830_context(ctx);
DBG("%s\n", __FUNCTION__);
if (pname == GL_FOG_COLOR) {
GLuint color = (((GLubyte) (ctx->Fog.Color[0] * 255.0F) << 16) |
((GLubyte) (ctx->Fog.Color[1] * 255.0F) << 8) |
((GLubyte) (ctx->Fog.Color[2] * 255.0F) << 0));
I830_STATECHANGE(i830, I830_UPLOAD_CTX);
i830->state.Ctx[I830_CTXREG_FOGCOLOR] =
(_3DSTATE_FOG_COLOR_CMD | color);
}
}
/* =============================================================
*/
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 (!ctx->DrawBuffer || !ctx->DrawBuffer->Visual.depthBits)
state = false;
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:
{
bool hw_stencil = false;
if (ctx->DrawBuffer) {
struct intel_renderbuffer *irbStencil
= intel_get_renderbuffer(ctx->DrawBuffer, BUFFER_STENCIL);
hw_stencil = (irbStencil && irbStencil->mt);
}
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:
;
}
}
static void
i830_init_packets(struct i830_context *i830)
{
/* Zero all state */
memset(&i830->state, 0, sizeof(i830->state));
/* Set default blend state */
i830->state.TexBlend[0][0] = (_3DSTATE_MAP_BLEND_OP_CMD(0) |
TEXPIPE_COLOR |
ENABLE_TEXOUTPUT_WRT_SEL |
TEXOP_OUTPUT_CURRENT |
DISABLE_TEX_CNTRL_STAGE |
TEXOP_SCALE_1X |
TEXOP_MODIFY_PARMS |
TEXOP_LAST_STAGE | TEXBLENDOP_ARG1);
i830->state.TexBlend[0][1] = (_3DSTATE_MAP_BLEND_OP_CMD(0) |
TEXPIPE_ALPHA |
ENABLE_TEXOUTPUT_WRT_SEL |
TEXOP_OUTPUT_CURRENT |
TEXOP_SCALE_1X |
TEXOP_MODIFY_PARMS | TEXBLENDOP_ARG1);
i830->state.TexBlend[0][2] = (_3DSTATE_MAP_BLEND_ARG_CMD(0) |
TEXPIPE_COLOR |
TEXBLEND_ARG1 |
TEXBLENDARG_MODIFY_PARMS |
TEXBLENDARG_DIFFUSE);
i830->state.TexBlend[0][3] = (_3DSTATE_MAP_BLEND_ARG_CMD(0) |
TEXPIPE_ALPHA |
TEXBLEND_ARG1 |
TEXBLENDARG_MODIFY_PARMS |
TEXBLENDARG_DIFFUSE);
i830->state.TexBlendWordsUsed[0] = 4;
i830->state.Ctx[I830_CTXREG_VF] = 0;
i830->state.Ctx[I830_CTXREG_VF2] = 0;
i830->state.Ctx[I830_CTXREG_AA] = (_3DSTATE_AA_CMD |
AA_LINE_ECAAR_WIDTH_ENABLE |
AA_LINE_ECAAR_WIDTH_1_0 |
AA_LINE_REGION_WIDTH_ENABLE |
AA_LINE_REGION_WIDTH_1_0 |
AA_LINE_DISABLE);
i830->state.Ctx[I830_CTXREG_ENABLES_1] = (_3DSTATE_ENABLES_1_CMD |
DISABLE_LOGIC_OP |
DISABLE_STENCIL_TEST |
DISABLE_DEPTH_BIAS |
DISABLE_SPEC_ADD |
DISABLE_FOG |
DISABLE_ALPHA_TEST |
DISABLE_COLOR_BLEND |
DISABLE_DEPTH_TEST);
#if 000 /* XXX all the stencil enable state is set in i830Enable(), right? */
if (i830->intel.hw_stencil) {
i830->state.Ctx[I830_CTXREG_ENABLES_2] = (_3DSTATE_ENABLES_2_CMD |
ENABLE_STENCIL_WRITE |
ENABLE_TEX_CACHE |
ENABLE_DITHER |
ENABLE_COLOR_MASK |
/* set no color comps disabled */
ENABLE_COLOR_WRITE |
ENABLE_DEPTH_WRITE);
}
else
#endif
{
i830->state.Ctx[I830_CTXREG_ENABLES_2] = (_3DSTATE_ENABLES_2_CMD |
DISABLE_STENCIL_WRITE |
ENABLE_TEX_CACHE |
ENABLE_DITHER |
ENABLE_COLOR_MASK |
/* set no color comps disabled */
ENABLE_COLOR_WRITE |
ENABLE_DEPTH_WRITE);
}
i830->state.Ctx[I830_CTXREG_STATE1] = (_3DSTATE_MODES_1_CMD |
ENABLE_COLR_BLND_FUNC |
BLENDFUNC_ADD |
ENABLE_SRC_BLND_FACTOR |
SRC_BLND_FACT(BLENDFACT_ONE) |
ENABLE_DST_BLND_FACTOR |
DST_BLND_FACT(BLENDFACT_ZERO));
i830->state.Ctx[I830_CTXREG_STATE2] = (_3DSTATE_MODES_2_CMD |
ENABLE_GLOBAL_DEPTH_BIAS |
GLOBAL_DEPTH_BIAS(0) |
ENABLE_ALPHA_TEST_FUNC |
ALPHA_TEST_FUNC(COMPAREFUNC_ALWAYS)
| ALPHA_REF_VALUE(0));
i830->state.Ctx[I830_CTXREG_STATE3] = (_3DSTATE_MODES_3_CMD |
ENABLE_DEPTH_TEST_FUNC |
DEPTH_TEST_FUNC(COMPAREFUNC_LESS) |
ENABLE_ALPHA_SHADE_MODE |
ALPHA_SHADE_MODE(SHADE_MODE_LINEAR)
| ENABLE_FOG_SHADE_MODE |
FOG_SHADE_MODE(SHADE_MODE_LINEAR) |
ENABLE_SPEC_SHADE_MODE |
SPEC_SHADE_MODE(SHADE_MODE_LINEAR) |
ENABLE_COLOR_SHADE_MODE |
COLOR_SHADE_MODE(SHADE_MODE_LINEAR)
| ENABLE_CULL_MODE | CULLMODE_NONE);
i830->state.Ctx[I830_CTXREG_STATE4] = (_3DSTATE_MODES_4_CMD |
ENABLE_LOGIC_OP_FUNC |
LOGIC_OP_FUNC(LOGICOP_COPY) |
ENABLE_STENCIL_TEST_MASK |
STENCIL_TEST_MASK(0xff) |
ENABLE_STENCIL_WRITE_MASK |
STENCIL_WRITE_MASK(0xff));
i830->state.Ctx[I830_CTXREG_STENCILTST] = (_3DSTATE_STENCIL_TEST_CMD |
ENABLE_STENCIL_PARMS |
STENCIL_FAIL_OP(STENCILOP_KEEP)
|
STENCIL_PASS_DEPTH_FAIL_OP
(STENCILOP_KEEP) |
STENCIL_PASS_DEPTH_PASS_OP
(STENCILOP_KEEP) |
ENABLE_STENCIL_TEST_FUNC |
STENCIL_TEST_FUNC
(COMPAREFUNC_ALWAYS) |
ENABLE_STENCIL_REF_VALUE |
STENCIL_REF_VALUE(0));
i830->state.Ctx[I830_CTXREG_STATE5] = (_3DSTATE_MODES_5_CMD | FLUSH_TEXTURE_CACHE | ENABLE_SPRITE_POINT_TEX | SPRITE_POINT_TEX_OFF | ENABLE_FIXED_LINE_WIDTH | FIXED_LINE_WIDTH(0x2) | /* 1.0 */
ENABLE_FIXED_POINT_WIDTH |
FIXED_POINT_WIDTH(1));
i830->state.Ctx[I830_CTXREG_IALPHAB] = (_3DSTATE_INDPT_ALPHA_BLEND_CMD |
DISABLE_INDPT_ALPHA_BLEND |
ENABLE_ALPHA_BLENDFUNC |
ABLENDFUNC_ADD);
i830->state.Ctx[I830_CTXREG_FOGCOLOR] = (_3DSTATE_FOG_COLOR_CMD |
FOG_COLOR_RED(0) |
FOG_COLOR_GREEN(0) |
FOG_COLOR_BLUE(0));
i830->state.Ctx[I830_CTXREG_BLENDCOLOR0] = _3DSTATE_CONST_BLEND_COLOR_CMD;
i830->state.Ctx[I830_CTXREG_BLENDCOLOR1] = 0;
i830->state.Ctx[I830_CTXREG_MCSB0] = _3DSTATE_MAP_COORD_SETBIND_CMD;
i830->state.Ctx[I830_CTXREG_MCSB1] = (TEXBIND_SET3(TEXCOORDSRC_VTXSET_3) |
TEXBIND_SET2(TEXCOORDSRC_VTXSET_2) |
TEXBIND_SET1(TEXCOORDSRC_VTXSET_1) |
TEXBIND_SET0(TEXCOORDSRC_VTXSET_0));
i830->state.RasterRules[I830_RASTER_RULES] = (_3DSTATE_RASTER_RULES_CMD |
ENABLE_POINT_RASTER_RULE |
OGL_POINT_RASTER_RULE |
ENABLE_LINE_STRIP_PROVOKE_VRTX |
ENABLE_TRI_FAN_PROVOKE_VRTX |
ENABLE_TRI_STRIP_PROVOKE_VRTX |
LINE_STRIP_PROVOKE_VRTX(1) |
TRI_FAN_PROVOKE_VRTX(2) |
TRI_STRIP_PROVOKE_VRTX(2));
i830->state.Stipple[I830_STPREG_ST0] = _3DSTATE_STIPPLE;
i830->state.Buffer[I830_DESTREG_DV0] = _3DSTATE_DST_BUF_VARS_CMD;
i830->state.Buffer[I830_DESTREG_SENABLE] = (_3DSTATE_SCISSOR_ENABLE_CMD |
DISABLE_SCISSOR_RECT);
i830->state.Buffer[I830_DESTREG_SR0] = _3DSTATE_SCISSOR_RECT_0_CMD;
i830->state.Buffer[I830_DESTREG_SR1] = 0;
i830->state.Buffer[I830_DESTREG_SR2] = 0;
}
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));
}
}
/* Fallback to swrast for select and feedback.
*/
static void
i830RenderMode(struct gl_context *ctx, GLenum mode)
{
struct intel_context *intel = intel_context(ctx);
FALLBACK(intel, INTEL_FALLBACK_RENDERMODE, (mode != GL_RENDER));
}
void
i830InitStateFuncs(struct dd_function_table *functions)
{
functions->AlphaFunc = i830AlphaFunc;
functions->BlendColor = i830BlendColor;
functions->BlendEquationSeparate = i830BlendEquationSeparate;
functions->BlendFuncSeparate = i830BlendFuncSeparate;
functions->ColorMask = i830ColorMask;
functions->CullFace = i830CullFaceFrontFace;
functions->DepthFunc = i830DepthFunc;
functions->DepthMask = i830DepthMask;
functions->Enable = i830Enable;
functions->Fogfv = i830Fogfv;
functions->FrontFace = i830CullFaceFrontFace;
functions->LightModelfv = i830LightModelfv;
functions->LineWidth = i830LineWidth;
functions->LogicOpcode = i830LogicOp;
functions->PointSize = i830PointSize;
functions->PolygonStipple = i830PolygonStipple;
functions->RenderMode = i830RenderMode;
functions->Scissor = i830Scissor;
functions->ShadeModel = i830ShadeModel;
functions->StencilFuncSeparate = i830StencilFuncSeparate;
functions->StencilMaskSeparate = i830StencilMaskSeparate;
functions->StencilOpSeparate = i830StencilOpSeparate;
functions->DepthRange = i830DepthRange;
functions->Viewport = i830Viewport;
}
void
i830InitState(struct i830_context *i830)
{
struct gl_context *ctx = &i830->intel.ctx;
i830_init_packets(i830);
_mesa_init_driver_state(ctx);
i830->state.emitted = 0;
i830->state.active = (I830_UPLOAD_INVARIENT |
I830_UPLOAD_RASTER_RULES |
I830_UPLOAD_TEXBLEND(0) |
I830_UPLOAD_STIPPLE |
I830_UPLOAD_CTX | I830_UPLOAD_BUFFERS);
}