/**************************************************************************
*
* 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 "tnl/tnl.h"
#include "tnl/t_context.h"
#include "drivers/common/driverfuncs.h"
#include "intel_fbo.h"
#include "intel_screen.h"
#include "intel_batchbuffer.h"
#include "intel_buffers.h"
#include "i915_context.h"
#include "i915_reg.h"
#define FILE_DEBUG_FLAG DEBUG_STATE
void
i915_update_stencil(struct gl_context * ctx)
{
struct i915_context *i915 = I915_CONTEXT(ctx);
GLuint front_ref, front_writemask, front_mask;
GLenum front_func, front_fail, front_pass_z_fail, front_pass_z_pass;
GLuint back_ref, back_writemask, back_mask;
GLenum back_func, back_fail, back_pass_z_fail, back_pass_z_pass;
GLuint dirty = 0;
/* The 915 considers CW to be "front" for two-sided stencil, so choose
* appropriately.
*/
/* _NEW_POLYGON | _NEW_STENCIL */
if (ctx->Polygon.FrontFace == GL_CW) {
front_ref = ctx->Stencil.Ref[0];
front_mask = ctx->Stencil.ValueMask[0];
front_writemask = ctx->Stencil.WriteMask[0];
front_func = ctx->Stencil.Function[0];
front_fail = ctx->Stencil.FailFunc[0];
front_pass_z_fail = ctx->Stencil.ZFailFunc[0];
front_pass_z_pass = ctx->Stencil.ZPassFunc[0];
back_ref = ctx->Stencil.Ref[ctx->Stencil._BackFace];
back_mask = ctx->Stencil.ValueMask[ctx->Stencil._BackFace];
back_writemask = ctx->Stencil.WriteMask[ctx->Stencil._BackFace];
back_func = ctx->Stencil.Function[ctx->Stencil._BackFace];
back_fail = ctx->Stencil.FailFunc[ctx->Stencil._BackFace];
back_pass_z_fail = ctx->Stencil.ZFailFunc[ctx->Stencil._BackFace];
back_pass_z_pass = ctx->Stencil.ZPassFunc[ctx->Stencil._BackFace];
} else {
front_ref = ctx->Stencil.Ref[ctx->Stencil._BackFace];
front_mask = ctx->Stencil.ValueMask[ctx->Stencil._BackFace];
front_writemask = ctx->Stencil.WriteMask[ctx->Stencil._BackFace];
front_func = ctx->Stencil.Function[ctx->Stencil._BackFace];
front_fail = ctx->Stencil.FailFunc[ctx->Stencil._BackFace];
front_pass_z_fail = ctx->Stencil.ZFailFunc[ctx->Stencil._BackFace];
front_pass_z_pass = ctx->Stencil.ZPassFunc[ctx->Stencil._BackFace];
back_ref = ctx->Stencil.Ref[0];
back_mask = ctx->Stencil.ValueMask[0];
back_writemask = ctx->Stencil.WriteMask[0];
back_func = ctx->Stencil.Function[0];
back_fail = ctx->Stencil.FailFunc[0];
back_pass_z_fail = ctx->Stencil.ZFailFunc[0];
back_pass_z_pass = ctx->Stencil.ZPassFunc[0];
}
#define set_ctx_bits(reg, mask, set) do{ \
GLuint dw = i915->state.Ctx[reg]; \
dw &= ~(mask); \
dw |= (set); \
dirty |= dw != i915->state.Ctx[reg]; \
i915->state.Ctx[reg] = dw; \
} while(0)
/* Set front state. */
set_ctx_bits(I915_CTXREG_STATE4,
MODE4_ENABLE_STENCIL_TEST_MASK |
MODE4_ENABLE_STENCIL_WRITE_MASK,
ENABLE_STENCIL_TEST_MASK |
ENABLE_STENCIL_WRITE_MASK |
STENCIL_TEST_MASK(front_mask) |
STENCIL_WRITE_MASK(front_writemask));
set_ctx_bits(I915_CTXREG_LIS5,
S5_STENCIL_REF_MASK |
S5_STENCIL_TEST_FUNC_MASK |
S5_STENCIL_FAIL_MASK |
S5_STENCIL_PASS_Z_FAIL_MASK |
S5_STENCIL_PASS_Z_PASS_MASK,
(front_ref << S5_STENCIL_REF_SHIFT) |
(intel_translate_compare_func(front_func) << S5_STENCIL_TEST_FUNC_SHIFT) |
(intel_translate_stencil_op(front_fail) << S5_STENCIL_FAIL_SHIFT) |
(intel_translate_stencil_op(front_pass_z_fail) <<
S5_STENCIL_PASS_Z_FAIL_SHIFT) |
(intel_translate_stencil_op(front_pass_z_pass) <<
S5_STENCIL_PASS_Z_PASS_SHIFT));
/* Set back state if different from front. */
if (ctx->Stencil._TestTwoSide) {
set_ctx_bits(I915_CTXREG_BF_STENCIL_OPS,
BFO_STENCIL_REF_MASK |
BFO_STENCIL_TEST_MASK |
BFO_STENCIL_FAIL_MASK |
BFO_STENCIL_PASS_Z_FAIL_MASK |
BFO_STENCIL_PASS_Z_PASS_MASK,
BFO_STENCIL_TWO_SIDE |
(back_ref << BFO_STENCIL_REF_SHIFT) |
(intel_translate_compare_func(back_func) << BFO_STENCIL_TEST_SHIFT) |
(intel_translate_stencil_op(back_fail) << BFO_STENCIL_FAIL_SHIFT) |
(intel_translate_stencil_op(back_pass_z_fail) <<
BFO_STENCIL_PASS_Z_FAIL_SHIFT) |
(intel_translate_stencil_op(back_pass_z_pass) <<
BFO_STENCIL_PASS_Z_PASS_SHIFT));
set_ctx_bits(I915_CTXREG_BF_STENCIL_MASKS,
BFM_STENCIL_TEST_MASK_MASK |
BFM_STENCIL_WRITE_MASK_MASK,
BFM_STENCIL_TEST_MASK(back_mask) |
BFM_STENCIL_WRITE_MASK(back_writemask));
} else {
set_ctx_bits(I915_CTXREG_BF_STENCIL_OPS,
BFO_STENCIL_TWO_SIDE, 0);
}
#undef set_ctx_bits
if (dirty)
I915_STATECHANGE(i915, I915_UPLOAD_CTX);
}
static void
i915StencilFuncSeparate(struct gl_context * ctx, GLenum face, GLenum func, GLint ref,
GLuint mask)
{
}
static void
i915StencilMaskSeparate(struct gl_context * ctx, GLenum face, GLuint mask)
{
}
static void
i915StencilOpSeparate(struct gl_context * ctx, GLenum face, GLenum fail, GLenum zfail,
GLenum zpass)
{
}
static void
i915AlphaFunc(struct gl_context * ctx, GLenum func, GLfloat ref)
{
struct i915_context *i915 = I915_CONTEXT(ctx);
int test = intel_translate_compare_func(func);
GLubyte refByte;
GLuint dw;
UNCLAMPED_FLOAT_TO_UBYTE(refByte, ref);
dw = i915->state.Ctx[I915_CTXREG_LIS6];
dw &= ~(S6_ALPHA_TEST_FUNC_MASK | S6_ALPHA_REF_MASK);
dw |= ((test << S6_ALPHA_TEST_FUNC_SHIFT) |
(((GLuint) refByte) << S6_ALPHA_REF_SHIFT));
if (dw != i915->state.Ctx[I915_CTXREG_LIS6]) {
i915->state.Ctx[I915_CTXREG_LIS6] = dw;
I915_STATECHANGE(i915, I915_UPLOAD_CTX);
}
}
/* This function 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.
*/
static void
i915EvalLogicOpBlendState(struct gl_context * ctx)
{
struct i915_context *i915 = I915_CONTEXT(ctx);
GLuint dw0, dw1;
dw0 = i915->state.Ctx[I915_CTXREG_LIS5];
dw1 = i915->state.Ctx[I915_CTXREG_LIS6];
if (ctx->Color.ColorLogicOpEnabled) {
dw0 |= S5_LOGICOP_ENABLE;
dw1 &= ~S6_CBUF_BLEND_ENABLE;
}
else {
dw0 &= ~S5_LOGICOP_ENABLE;
if (ctx->Color.BlendEnabled) {
dw1 |= S6_CBUF_BLEND_ENABLE;
}
else {
dw1 &= ~S6_CBUF_BLEND_ENABLE;
}
}
if (dw0 != i915->state.Ctx[I915_CTXREG_LIS5] ||
dw1 != i915->state.Ctx[I915_CTXREG_LIS6]) {
i915->state.Ctx[I915_CTXREG_LIS5] = dw0;
i915->state.Ctx[I915_CTXREG_LIS6] = dw1;
I915_STATECHANGE(i915, I915_UPLOAD_CTX);
}
}
static void
i915BlendColor(struct gl_context * ctx, const GLfloat color[4])
{
struct i915_context *i915 = I915_CONTEXT(ctx);
GLubyte r, g, b, a;
GLuint dw;
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]);
dw = (a << 24) | (r << 16) | (g << 8) | b;
if (dw != i915->state.Blend[I915_BLENDREG_BLENDCOLOR1]) {
i915->state.Blend[I915_BLENDREG_BLENDCOLOR1] = dw;
I915_STATECHANGE(i915, I915_UPLOAD_BLEND);
}
}
#define DST_BLND_FACT(f) ((f)<<S6_CBUF_DST_BLEND_FACT_SHIFT)
#define SRC_BLND_FACT(f) ((f)<<S6_CBUF_SRC_BLEND_FACT_SHIFT)
#define DST_ABLND_FACT(f) ((f)<<IAB_DST_FACTOR_SHIFT)
#define SRC_ABLND_FACT(f) ((f)<<IAB_SRC_FACTOR_SHIFT)
static GLuint
translate_blend_equation(GLenum mode)
{
switch (mode) {
case GL_FUNC_ADD:
return BLENDFUNC_ADD;
case GL_MIN:
return BLENDFUNC_MIN;
case GL_MAX:
return BLENDFUNC_MAX;
case GL_FUNC_SUBTRACT:
return BLENDFUNC_SUBTRACT;
case GL_FUNC_REVERSE_SUBTRACT:
return BLENDFUNC_REVERSE_SUBTRACT;
default:
return 0;
}
}
static void
i915UpdateBlendState(struct gl_context * ctx)
{
struct i915_context *i915 = I915_CONTEXT(ctx);
GLuint iab = (i915->state.Blend[I915_BLENDREG_IAB] &
~(IAB_SRC_FACTOR_MASK |
IAB_DST_FACTOR_MASK |
(BLENDFUNC_MASK << IAB_FUNC_SHIFT) | IAB_ENABLE));
GLuint lis6 = (i915->state.Ctx[I915_CTXREG_LIS6] &
~(S6_CBUF_SRC_BLEND_FACT_MASK |
S6_CBUF_DST_BLEND_FACT_MASK | S6_CBUF_BLEND_FUNC_MASK));
GLuint eqRGB = ctx->Color.Blend[0].EquationRGB;
GLuint eqA = ctx->Color.Blend[0].EquationA;
GLuint srcRGB = ctx->Color.Blend[0].SrcRGB;
GLuint dstRGB = ctx->Color.Blend[0].DstRGB;
GLuint srcA = ctx->Color.Blend[0].SrcA;
GLuint dstA = ctx->Color.Blend[0].DstA;
if (eqRGB == GL_MIN || eqRGB == GL_MAX) {
srcRGB = dstRGB = GL_ONE;
}
if (eqA == GL_MIN || eqA == GL_MAX) {
srcA = dstA = GL_ONE;
}
lis6 |= SRC_BLND_FACT(intel_translate_blend_factor(srcRGB));
lis6 |= DST_BLND_FACT(intel_translate_blend_factor(dstRGB));
lis6 |= translate_blend_equation(eqRGB) << S6_CBUF_BLEND_FUNC_SHIFT;
iab |= SRC_ABLND_FACT(intel_translate_blend_factor(srcA));
iab |= DST_ABLND_FACT(intel_translate_blend_factor(dstA));
iab |= translate_blend_equation(eqA) << IAB_FUNC_SHIFT;
if (srcA != srcRGB || dstA != dstRGB || eqA != eqRGB)
iab |= IAB_ENABLE;
if (iab != i915->state.Blend[I915_BLENDREG_IAB]) {
i915->state.Blend[I915_BLENDREG_IAB] = iab;
I915_STATECHANGE(i915, I915_UPLOAD_BLEND);
}
if (lis6 != i915->state.Ctx[I915_CTXREG_LIS6]) {
i915->state.Ctx[I915_CTXREG_LIS6] = lis6;
I915_STATECHANGE(i915, I915_UPLOAD_CTX);
}
/* This will catch a logicop blend equation */
i915EvalLogicOpBlendState(ctx);
}
static void
i915BlendFuncSeparate(struct gl_context * ctx, GLenum srcRGB,
GLenum dstRGB, GLenum srcA, GLenum dstA)
{
i915UpdateBlendState(ctx);
}
static void
i915BlendEquationSeparate(struct gl_context * ctx, GLenum eqRGB, GLenum eqA)
{
i915UpdateBlendState(ctx);
}
static void
i915DepthFunc(struct gl_context * ctx, GLenum func)
{
struct i915_context *i915 = I915_CONTEXT(ctx);
int test = intel_translate_compare_func(func);
GLuint dw;
DBG("%s\n", __FUNCTION__);
dw = i915->state.Ctx[I915_CTXREG_LIS6];
dw &= ~S6_DEPTH_TEST_FUNC_MASK;
dw |= test << S6_DEPTH_TEST_FUNC_SHIFT;
if (dw != i915->state.Ctx[I915_CTXREG_LIS6]) {
I915_STATECHANGE(i915, I915_UPLOAD_CTX);
i915->state.Ctx[I915_CTXREG_LIS6] = dw;
}
}
static void
i915DepthMask(struct gl_context * ctx, GLboolean flag)
{
struct i915_context *i915 = I915_CONTEXT(ctx);
GLuint dw;
DBG("%s flag (%d)\n", __FUNCTION__, flag);
if (!ctx->DrawBuffer || !ctx->DrawBuffer->Visual.depthBits)
flag = false;
dw = i915->state.Ctx[I915_CTXREG_LIS6];
if (flag && ctx->Depth.Test)
dw |= S6_DEPTH_WRITE_ENABLE;
else
dw &= ~S6_DEPTH_WRITE_ENABLE;
if (dw != i915->state.Ctx[I915_CTXREG_LIS6]) {
I915_STATECHANGE(i915, I915_UPLOAD_CTX);
i915->state.Ctx[I915_CTXREG_LIS6] = dw;
}
}
/**
* Update the viewport transformation matrix. Depends on:
* - viewport pos/size
* - depthrange
* - window pos/size or FBO size
*/
void
intelCalcViewport(struct gl_context * ctx)
{
struct intel_context *intel = intel_context(ctx);
if (_mesa_is_winsys_fbo(ctx->DrawBuffer)) {
_math_matrix_viewport(&intel->ViewportMatrix,
ctx->Viewport.X,
ctx->DrawBuffer->Height - ctx->Viewport.Y,
ctx->Viewport.Width,
-ctx->Viewport.Height,
ctx->Viewport.Near,
ctx->Viewport.Far,
1.0);
} else {
_math_matrix_viewport(&intel->ViewportMatrix,
ctx->Viewport.X,
ctx->Viewport.Y,
ctx->Viewport.Width,
ctx->Viewport.Height,
ctx->Viewport.Near,
ctx->Viewport.Far,
1.0);
}
}
/** Called from ctx->Driver.Viewport() */
static void
i915Viewport(struct gl_context * ctx,
GLint x, GLint y, GLsizei width, GLsizei height)
{
intelCalcViewport(ctx);
}
/** Called from ctx->Driver.DepthRange() */
static void
i915DepthRange(struct gl_context * ctx, GLclampd nearval, GLclampd farval)
{
intelCalcViewport(ctx);
}
/* =============================================================
* Polygon stipple
*
* The i915 supports a 4x4 stipple natively, GL wants 32x32.
* Fortunately stipple is usually a repeating pattern.
*/
static void
i915PolygonStipple(struct gl_context * ctx, const GLubyte * mask)
{
struct i915_context *i915 = I915_CONTEXT(ctx);
const GLubyte *m;
GLubyte p[4];
int i, j, k;
int active = (ctx->Polygon.StippleFlag &&
i915->intel.reduced_primitive == GL_TRIANGLES);
GLuint newMask;
if (active) {
I915_STATECHANGE(i915, I915_UPLOAD_STIPPLE);
i915->state.Stipple[I915_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]) {
i915->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 */
i915->intel.hw_stipple = 0;
return;
}
i915->state.Stipple[I915_STPREG_ST1] &= ~0xffff;
i915->state.Stipple[I915_STPREG_ST1] |= newMask;
i915->intel.hw_stipple = 1;
if (active)
i915->state.Stipple[I915_STPREG_ST1] |= ST1_ENABLE;
}
/* =============================================================
* Hardware clipping
*/
static void
i915Scissor(struct gl_context * ctx, GLint x, GLint y, GLsizei w, GLsizei h)
{
struct i915_context *i915 = I915_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);
I915_STATECHANGE(i915, I915_UPLOAD_BUFFERS);
i915->state.Buffer[I915_DESTREG_SR1] = (y1 << 16) | (x1 & 0xffff);
i915->state.Buffer[I915_DESTREG_SR2] = (y2 << 16) | (x2 & 0xffff);
}
static void
i915LogicOp(struct gl_context * ctx, GLenum opcode)
{
struct i915_context *i915 = I915_CONTEXT(ctx);
int tmp = intel_translate_logic_op(opcode);
DBG("%s\n", __FUNCTION__);
I915_STATECHANGE(i915, I915_UPLOAD_CTX);
i915->state.Ctx[I915_CTXREG_STATE4] &= ~LOGICOP_MASK;
i915->state.Ctx[I915_CTXREG_STATE4] |= LOGIC_OP_FUNC(tmp);
}
static void
i915CullFaceFrontFace(struct gl_context * ctx, GLenum unused)
{
struct i915_context *i915 = I915_CONTEXT(ctx);
GLuint mode, dw;
DBG("%s %d\n", __FUNCTION__,
ctx->DrawBuffer ? ctx->DrawBuffer->Name : 0);
if (!ctx->Polygon.CullFlag) {
mode = S4_CULLMODE_NONE;
}
else if (ctx->Polygon.CullFaceMode != GL_FRONT_AND_BACK) {
mode = S4_CULLMODE_CW;
if (ctx->DrawBuffer && _mesa_is_user_fbo(ctx->DrawBuffer))
mode ^= (S4_CULLMODE_CW ^ S4_CULLMODE_CCW);
if (ctx->Polygon.CullFaceMode == GL_FRONT)
mode ^= (S4_CULLMODE_CW ^ S4_CULLMODE_CCW);
if (ctx->Polygon.FrontFace != GL_CCW)
mode ^= (S4_CULLMODE_CW ^ S4_CULLMODE_CCW);
}
else {
mode = S4_CULLMODE_BOTH;
}
dw = i915->state.Ctx[I915_CTXREG_LIS4];
dw &= ~S4_CULLMODE_MASK;
dw |= mode;
if (dw != i915->state.Ctx[I915_CTXREG_LIS4]) {
i915->state.Ctx[I915_CTXREG_LIS4] = dw;
I915_STATECHANGE(i915, I915_UPLOAD_CTX);
}
}
static void
i915LineWidth(struct gl_context * ctx, GLfloat widthf)
{
struct i915_context *i915 = I915_CONTEXT(ctx);
int lis4 = i915->state.Ctx[I915_CTXREG_LIS4] & ~S4_LINE_WIDTH_MASK;
int width;
DBG("%s\n", __FUNCTION__);
width = (int) (widthf * 2);
width = CLAMP(width, 1, 0xf);
lis4 |= width << S4_LINE_WIDTH_SHIFT;
if (lis4 != i915->state.Ctx[I915_CTXREG_LIS4]) {
I915_STATECHANGE(i915, I915_UPLOAD_CTX);
i915->state.Ctx[I915_CTXREG_LIS4] = lis4;
}
}
static void
i915PointSize(struct gl_context * ctx, GLfloat size)
{
struct i915_context *i915 = I915_CONTEXT(ctx);
int lis4 = i915->state.Ctx[I915_CTXREG_LIS4] & ~S4_POINT_WIDTH_MASK;
GLint point_size = (int) round(size);
DBG("%s\n", __FUNCTION__);
point_size = CLAMP(point_size, 1, 255);
lis4 |= point_size << S4_POINT_WIDTH_SHIFT;
if (lis4 != i915->state.Ctx[I915_CTXREG_LIS4]) {
I915_STATECHANGE(i915, I915_UPLOAD_CTX);
i915->state.Ctx[I915_CTXREG_LIS4] = lis4;
}
}
static void
i915PointParameterfv(struct gl_context * ctx, GLenum pname, const GLfloat *params)
{
struct i915_context *i915 = I915_CONTEXT(ctx);
switch (pname) {
case GL_POINT_SPRITE_COORD_ORIGIN:
/* This could be supported, but it would require modifying the fragment
* program to invert the y component of the texture coordinate by
* inserting a 'SUB tc.y, {1.0}.xxxx, tc' instruction.
*/
FALLBACK(&i915->intel, I915_FALLBACK_POINT_SPRITE_COORD_ORIGIN,
(params[0] != GL_UPPER_LEFT));
break;
}
}
void
i915_update_sprite_point_enable(struct gl_context *ctx)
{
struct intel_context *intel = intel_context(ctx);
/* _NEW_PROGRAM */
struct i915_fragment_program *p =
(struct i915_fragment_program *) ctx->FragmentProgram._Current;
const GLbitfield64 inputsRead = p->FragProg.Base.InputsRead;
struct i915_context *i915 = i915_context(ctx);
GLuint s4 = i915->state.Ctx[I915_CTXREG_LIS4] & ~S4_VFMT_MASK;
int i;
GLuint coord_replace_bits = 0x0;
GLuint tex_coord_unit_bits = 0x0;
for (i = 0; i < ctx->Const.MaxTextureCoordUnits; i++) {
/* _NEW_POINT */
if (ctx->Point.CoordReplace[i] && ctx->Point.PointSprite)
coord_replace_bits |= (1 << i);
if (inputsRead & FRAG_BIT_TEX(i))
tex_coord_unit_bits |= (1 << i);
}
/*
* Here we can't enable the SPRITE_POINT_ENABLE bit when the mis-match
* of tex_coord_unit_bits and coord_replace_bits, or this will make all
* the other non-point-sprite coords(like varying inputs, as we now use
* tex coord to implement varying inputs) be replaced to value (0, 0)-(1, 1).
*
* Thus, do fallback when needed.
*/
FALLBACK(intel, I915_FALLBACK_COORD_REPLACE,
coord_replace_bits && coord_replace_bits != tex_coord_unit_bits);
s4 &= ~S4_SPRITE_POINT_ENABLE;
s4 |= (coord_replace_bits && coord_replace_bits == tex_coord_unit_bits) ?
S4_SPRITE_POINT_ENABLE : 0;
if (s4 != i915->state.Ctx[I915_CTXREG_LIS4]) {
i915->state.Ctx[I915_CTXREG_LIS4] = s4;
I915_STATECHANGE(i915, I915_UPLOAD_CTX);
}
}
/* =============================================================
* Color masks
*/
static void
i915ColorMask(struct gl_context * ctx,
GLboolean r, GLboolean g, GLboolean b, GLboolean a)
{
struct i915_context *i915 = I915_CONTEXT(ctx);
GLuint tmp = i915->state.Ctx[I915_CTXREG_LIS5] & ~S5_WRITEDISABLE_MASK;
DBG("%s r(%d) g(%d) b(%d) a(%d)\n", __FUNCTION__, r, g, b,
a);
if (!r)
tmp |= S5_WRITEDISABLE_RED;
if (!g)
tmp |= S5_WRITEDISABLE_GREEN;
if (!b)
tmp |= S5_WRITEDISABLE_BLUE;
if (!a)
tmp |= S5_WRITEDISABLE_ALPHA;
if (tmp != i915->state.Ctx[I915_CTXREG_LIS5]) {
I915_STATECHANGE(i915, I915_UPLOAD_CTX);
i915->state.Ctx[I915_CTXREG_LIS5] = tmp;
}
}
static void
update_specular(struct gl_context * ctx)
{
/* A hack to trigger the rebuild of the fragment program.
*/
intel_context(ctx)->NewGLState |= _NEW_TEXTURE;
}
static void
i915LightModelfv(struct gl_context * ctx, GLenum pname, const GLfloat * param)
{
DBG("%s\n", __FUNCTION__);
if (pname == GL_LIGHT_MODEL_COLOR_CONTROL) {
update_specular(ctx);
}
}
static void
i915ShadeModel(struct gl_context * ctx, GLenum mode)
{
struct i915_context *i915 = I915_CONTEXT(ctx);
I915_STATECHANGE(i915, I915_UPLOAD_CTX);
if (mode == GL_SMOOTH) {
i915->state.Ctx[I915_CTXREG_LIS4] &= ~(S4_FLATSHADE_ALPHA |
S4_FLATSHADE_COLOR |
S4_FLATSHADE_SPECULAR);
}
else {
i915->state.Ctx[I915_CTXREG_LIS4] |= (S4_FLATSHADE_ALPHA |
S4_FLATSHADE_COLOR |
S4_FLATSHADE_SPECULAR);
}
}
/* =============================================================
* Fog
*
* This empty function remains because _mesa_init_driver_state calls
* dd_function_table::Fogfv unconditionally. We have to have some function
* there so that it doesn't try to call a NULL pointer.
*/
static void
i915Fogfv(struct gl_context * ctx, GLenum pname, const GLfloat * param)
{
(void) ctx;
(void) pname;
(void) param;
}
/* =============================================================
*/
static void
i915Enable(struct gl_context * ctx, GLenum cap, GLboolean state)
{
struct i915_context *i915 = I915_CONTEXT(ctx);
GLuint dw;
switch (cap) {
case GL_TEXTURE_2D:
break;
case GL_LIGHTING:
case GL_COLOR_SUM:
update_specular(ctx);
break;
case GL_ALPHA_TEST:
dw = i915->state.Ctx[I915_CTXREG_LIS6];
if (state)
dw |= S6_ALPHA_TEST_ENABLE;
else
dw &= ~S6_ALPHA_TEST_ENABLE;
if (dw != i915->state.Ctx[I915_CTXREG_LIS6]) {
i915->state.Ctx[I915_CTXREG_LIS6] = dw;
I915_STATECHANGE(i915, I915_UPLOAD_CTX);
}
break;
case GL_BLEND:
i915EvalLogicOpBlendState(ctx);
break;
case GL_COLOR_LOGIC_OP:
i915EvalLogicOpBlendState(ctx);
/* Logicop doesn't seem to work at 16bpp:
*/
if (ctx->Visual.rgbBits == 16)
FALLBACK(&i915->intel, I915_FALLBACK_LOGICOP, state);
break;
case GL_FRAGMENT_PROGRAM_ARB:
break;
case GL_DITHER:
dw = i915->state.Ctx[I915_CTXREG_LIS5];
if (state)
dw |= S5_COLOR_DITHER_ENABLE;
else
dw &= ~S5_COLOR_DITHER_ENABLE;
if (dw != i915->state.Ctx[I915_CTXREG_LIS5]) {
i915->state.Ctx[I915_CTXREG_LIS5] = dw;
I915_STATECHANGE(i915, I915_UPLOAD_CTX);
}
break;
case GL_DEPTH_TEST:
dw = i915->state.Ctx[I915_CTXREG_LIS6];
if (!ctx->DrawBuffer || !ctx->DrawBuffer->Visual.depthBits)
state = false;
if (state)
dw |= S6_DEPTH_TEST_ENABLE;
else
dw &= ~S6_DEPTH_TEST_ENABLE;
if (dw != i915->state.Ctx[I915_CTXREG_LIS6]) {
i915->state.Ctx[I915_CTXREG_LIS6] = dw;
I915_STATECHANGE(i915, I915_UPLOAD_CTX);
}
i915DepthMask(ctx, ctx->Depth.Mask);
break;
case GL_SCISSOR_TEST:
I915_STATECHANGE(i915, I915_UPLOAD_BUFFERS);
if (state)
i915->state.Buffer[I915_DESTREG_SENABLE] =
(_3DSTATE_SCISSOR_ENABLE_CMD | ENABLE_SCISSOR_RECT);
else
i915->state.Buffer[I915_DESTREG_SENABLE] =
(_3DSTATE_SCISSOR_ENABLE_CMD | DISABLE_SCISSOR_RECT);
break;
case GL_LINE_SMOOTH:
dw = i915->state.Ctx[I915_CTXREG_LIS4];
if (state)
dw |= S4_LINE_ANTIALIAS_ENABLE;
else
dw &= ~S4_LINE_ANTIALIAS_ENABLE;
if (dw != i915->state.Ctx[I915_CTXREG_LIS4]) {
i915->state.Ctx[I915_CTXREG_LIS4] = dw;
I915_STATECHANGE(i915, I915_UPLOAD_CTX);
}
break;
case GL_CULL_FACE:
i915CullFaceFrontFace(ctx, 0);
break;
case GL_STENCIL_TEST:
if (!ctx->DrawBuffer || !ctx->DrawBuffer->Visual.stencilBits)
state = false;
dw = i915->state.Ctx[I915_CTXREG_LIS5];
if (state)
dw |= (S5_STENCIL_TEST_ENABLE | S5_STENCIL_WRITE_ENABLE);
else
dw &= ~(S5_STENCIL_TEST_ENABLE | S5_STENCIL_WRITE_ENABLE);
if (dw != i915->state.Ctx[I915_CTXREG_LIS5]) {
i915->state.Ctx[I915_CTXREG_LIS5] = dw;
I915_STATECHANGE(i915, I915_UPLOAD_CTX);
}
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 (i915->intel.hw_stipple &&
i915->intel.reduced_primitive == GL_TRIANGLES) {
I915_STATECHANGE(i915, I915_UPLOAD_STIPPLE);
if (state)
i915->state.Stipple[I915_STPREG_ST1] |= ST1_ENABLE;
else
i915->state.Stipple[I915_STPREG_ST1] &= ~ST1_ENABLE;
}
break;
case GL_POLYGON_SMOOTH:
break;
case GL_POINT_SPRITE:
/* Handle it at i915_update_sprite_point_enable () */
break;
case GL_POINT_SMOOTH:
break;
default:
;
}
}
static void
i915_init_packets(struct i915_context *i915)
{
/* Zero all state */
memset(&i915->state, 0, sizeof(i915->state));
{
I915_STATECHANGE(i915, I915_UPLOAD_CTX);
I915_STATECHANGE(i915, I915_UPLOAD_BLEND);
/* Probably don't want to upload all this stuff every time one
* piece changes.
*/
i915->state.Ctx[I915_CTXREG_LI] = (_3DSTATE_LOAD_STATE_IMMEDIATE_1 |
I1_LOAD_S(2) |
I1_LOAD_S(4) |
I1_LOAD_S(5) | I1_LOAD_S(6) | (3));
i915->state.Ctx[I915_CTXREG_LIS2] = 0;
i915->state.Ctx[I915_CTXREG_LIS4] = 0;
i915->state.Ctx[I915_CTXREG_LIS5] = 0;
if (i915->intel.ctx.Visual.rgbBits == 16)
i915->state.Ctx[I915_CTXREG_LIS5] |= S5_COLOR_DITHER_ENABLE;
i915->state.Ctx[I915_CTXREG_LIS6] = (S6_COLOR_WRITE_ENABLE |
(2 << S6_TRISTRIP_PV_SHIFT));
i915->state.Ctx[I915_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));
i915->state.Blend[I915_BLENDREG_IAB] =
(_3DSTATE_INDEPENDENT_ALPHA_BLEND_CMD | IAB_MODIFY_ENABLE |
IAB_MODIFY_FUNC | IAB_MODIFY_SRC_FACTOR | IAB_MODIFY_DST_FACTOR);
i915->state.Blend[I915_BLENDREG_BLENDCOLOR0] =
_3DSTATE_CONST_BLEND_COLOR_CMD;
i915->state.Blend[I915_BLENDREG_BLENDCOLOR1] = 0;
i915->state.Ctx[I915_CTXREG_BF_STENCIL_MASKS] =
_3DSTATE_BACKFACE_STENCIL_MASKS |
BFM_ENABLE_STENCIL_TEST_MASK |
BFM_ENABLE_STENCIL_WRITE_MASK |
(0xff << BFM_STENCIL_WRITE_MASK_SHIFT) |
(0xff << BFM_STENCIL_TEST_MASK_SHIFT);
i915->state.Ctx[I915_CTXREG_BF_STENCIL_OPS] =
_3DSTATE_BACKFACE_STENCIL_OPS |
BFO_ENABLE_STENCIL_REF |
BFO_ENABLE_STENCIL_FUNCS |
BFO_ENABLE_STENCIL_TWO_SIDE;
}
{
I915_STATECHANGE(i915, I915_UPLOAD_STIPPLE);
i915->state.Stipple[I915_STPREG_ST0] = _3DSTATE_STIPPLE;
}
{
i915->state.Buffer[I915_DESTREG_DV0] = _3DSTATE_DST_BUF_VARS_CMD;
/* scissor */
i915->state.Buffer[I915_DESTREG_SENABLE] =
(_3DSTATE_SCISSOR_ENABLE_CMD | DISABLE_SCISSOR_RECT);
i915->state.Buffer[I915_DESTREG_SR0] = _3DSTATE_SCISSOR_RECT_0_CMD;
i915->state.Buffer[I915_DESTREG_SR1] = 0;
i915->state.Buffer[I915_DESTREG_SR2] = 0;
}
i915->state.RasterRules[I915_RASTER_RULES] = _3DSTATE_RASTER_RULES_CMD |
ENABLE_POINT_RASTER_RULE |
OGL_POINT_RASTER_RULE |
ENABLE_LINE_STRIP_PROVOKE_VRTX |
ENABLE_TRI_FAN_PROVOKE_VRTX |
LINE_STRIP_PROVOKE_VRTX(1) |
TRI_FAN_PROVOKE_VRTX(2) | ENABLE_TEXKILL_3D_4D | TEXKILL_4D;
#if 0
{
I915_STATECHANGE(i915, I915_UPLOAD_DEFAULTS);
i915->state.Default[I915_DEFREG_C0] = _3DSTATE_DEFAULT_DIFFUSE;
i915->state.Default[I915_DEFREG_C1] = 0;
i915->state.Default[I915_DEFREG_S0] = _3DSTATE_DEFAULT_SPECULAR;
i915->state.Default[I915_DEFREG_S1] = 0;
i915->state.Default[I915_DEFREG_Z0] = _3DSTATE_DEFAULT_Z;
i915->state.Default[I915_DEFREG_Z1] = 0;
}
#endif
/* These will be emitted every at the head of every buffer, unless
* we get hardware contexts working.
*/
i915->state.active = (I915_UPLOAD_PROGRAM |
I915_UPLOAD_STIPPLE |
I915_UPLOAD_CTX |
I915_UPLOAD_BLEND |
I915_UPLOAD_BUFFERS |
I915_UPLOAD_INVARIENT |
I915_UPLOAD_RASTER_RULES);
}
void
i915_update_provoking_vertex(struct gl_context * ctx)
{
struct i915_context *i915 = I915_CONTEXT(ctx);
I915_STATECHANGE(i915, I915_UPLOAD_CTX);
i915->state.Ctx[I915_CTXREG_LIS6] &= ~(S6_TRISTRIP_PV_MASK);
I915_STATECHANGE(i915, I915_UPLOAD_RASTER_RULES);
i915->state.RasterRules[I915_RASTER_RULES] &= ~(LINE_STRIP_PROVOKE_VRTX_MASK |
TRI_FAN_PROVOKE_VRTX_MASK);
/* _NEW_LIGHT */
if (ctx->Light.ProvokingVertex == GL_LAST_VERTEX_CONVENTION) {
i915->state.RasterRules[I915_RASTER_RULES] |= (LINE_STRIP_PROVOKE_VRTX(1) |
TRI_FAN_PROVOKE_VRTX(2));
i915->state.Ctx[I915_CTXREG_LIS6] |= (2 << S6_TRISTRIP_PV_SHIFT);
} else {
i915->state.RasterRules[I915_RASTER_RULES] |= (LINE_STRIP_PROVOKE_VRTX(0) |
TRI_FAN_PROVOKE_VRTX(1));
i915->state.Ctx[I915_CTXREG_LIS6] |= (0 << S6_TRISTRIP_PV_SHIFT);
}
}
/* Fallback to swrast for select and feedback.
*/
static void
i915RenderMode(struct gl_context *ctx, GLenum mode)
{
struct intel_context *intel = intel_context(ctx);
FALLBACK(intel, INTEL_FALLBACK_RENDERMODE, (mode != GL_RENDER));
}
void
i915InitStateFunctions(struct dd_function_table *functions)
{
functions->AlphaFunc = i915AlphaFunc;
functions->BlendColor = i915BlendColor;
functions->BlendEquationSeparate = i915BlendEquationSeparate;
functions->BlendFuncSeparate = i915BlendFuncSeparate;
functions->ColorMask = i915ColorMask;
functions->CullFace = i915CullFaceFrontFace;
functions->DepthFunc = i915DepthFunc;
functions->DepthMask = i915DepthMask;
functions->Enable = i915Enable;
functions->Fogfv = i915Fogfv;
functions->FrontFace = i915CullFaceFrontFace;
functions->LightModelfv = i915LightModelfv;
functions->LineWidth = i915LineWidth;
functions->LogicOpcode = i915LogicOp;
functions->PointSize = i915PointSize;
functions->PointParameterfv = i915PointParameterfv;
functions->PolygonStipple = i915PolygonStipple;
functions->RenderMode = i915RenderMode;
functions->Scissor = i915Scissor;
functions->ShadeModel = i915ShadeModel;
functions->StencilFuncSeparate = i915StencilFuncSeparate;
functions->StencilMaskSeparate = i915StencilMaskSeparate;
functions->StencilOpSeparate = i915StencilOpSeparate;
functions->DepthRange = i915DepthRange;
functions->Viewport = i915Viewport;
}
void
i915InitState(struct i915_context *i915)
{
struct gl_context *ctx = &i915->intel.ctx;
i915_init_packets(i915);
_mesa_init_driver_state(ctx);
}