void r300SetupVertexProgram(r300ContextPtr rmesa)
{
GLcontext *ctx = rmesa->radeon.glCtx;
struct r300_vertex_program *prog = rmesa->selected_vp;
int inst_count = 0;
int param_count = 0;
/* Reset state, in case we don't use something */
((drm_r300_cmd_header_t *) rmesa->hw.vpp.cmd)->vpu.count = 0;
((drm_r300_cmd_header_t *) rmesa->hw.vpi.cmd)->vpu.count = 0;
((drm_r300_cmd_header_t *) rmesa->hw.vps.cmd)->vpu.count = 0;
R300_STATECHANGE(rmesa, vap_flush);
R300_STATECHANGE(rmesa, vpp);
param_count = r300VertexProgUpdateParams(ctx, prog, (float *)&rmesa->hw.vpp.cmd[R300_VPP_PARAM_0]);
bump_vpu_count(rmesa->hw.vpp.cmd, param_count);
param_count /= 4;
r300EmitVertexProgram(rmesa, R300_PVS_CODE_START, &(prog->code));
inst_count = (prog->code.length / 4) - 1;
r300VapCntl(rmesa, _mesa_bitcount(prog->code.InputsRead),
_mesa_bitcount(prog->code.OutputsWritten), prog->code.num_temporaries);
R300_STATECHANGE(rmesa, pvs);
rmesa->hw.pvs.cmd[R300_PVS_CNTL_1] = (0 << R300_PVS_FIRST_INST_SHIFT) | (inst_count << R300_PVS_XYZW_VALID_INST_SHIFT) |
(inst_count << R300_PVS_LAST_INST_SHIFT);
rmesa->hw.pvs.cmd[R300_PVS_CNTL_2] = (0 << R300_PVS_CONST_BASE_OFFSET_SHIFT) | (param_count << R300_PVS_MAX_CONST_ADDR_SHIFT);
rmesa->hw.pvs.cmd[R300_PVS_CNTL_3] = (inst_count << R300_PVS_LAST_VTX_SRC_INST_SHIFT);
}
/**
* For GLX_EXT_texture_from_pixmap
*/
XMesaBuffer
XMesaCreatePixmapTextureBuffer(XMesaVisual v, XMesaPixmap p,
XMesaColormap cmap,
int format, int target, int mipmap)
{
GET_CURRENT_CONTEXT(ctx);
XMesaBuffer b;
GLuint width, height;
assert(v);
b = create_xmesa_buffer((XMesaDrawable) p, PIXMAP, v, cmap);
if (!b)
return NULL;
/* get pixmap size, update framebuffer/renderbuffer dims */
xmesa_get_window_size(v->display, b, &width, &height);
_mesa_resize_framebuffer(NULL, &(b->mesa_buffer), width, height);
if (target == 0) {
/* examine dims */
if (ctx->Extensions.ARB_texture_non_power_of_two) {
target = GLX_TEXTURE_2D_EXT;
}
else if ( _mesa_bitcount(width) == 1
&& _mesa_bitcount(height) == 1) {
/* power of two size */
if (height == 1) {
target = GLX_TEXTURE_1D_EXT;
}
else {
target = GLX_TEXTURE_2D_EXT;
}
}
else if (ctx->Extensions.NV_texture_rectangle) {
target = GLX_TEXTURE_RECTANGLE_EXT;
}
else {
/* non power of two textures not supported */
XMesaDestroyBuffer(b);
return 0;
}
}
b->TextureTarget = target;
b->TextureFormat = format;
b->TextureMipmap = mipmap;
if (!initialize_visual_and_buffer(v, b, (XMesaDrawable) p, cmap)) {
xmesa_free_buffer(b);
return NULL;
}
return b;
}
void GLAPIENTRY
_mesa_PixelMapfv( GLenum map, GLsizei mapsize, const GLfloat *values )
{
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
/* XXX someday, test against ctx->Const.MaxPixelMapTableSize */
if (mapsize < 1 || mapsize > MAX_PIXEL_MAP_TABLE) {
_mesa_error( ctx, GL_INVALID_VALUE, "glPixelMapfv(mapsize)" );
return;
}
if (map >= GL_PIXEL_MAP_S_TO_S && map <= GL_PIXEL_MAP_I_TO_A) {
/* test that mapsize is a power of two */
if (_mesa_bitcount((GLuint) mapsize) != 1) {
_mesa_error( ctx, GL_INVALID_VALUE, "glPixelMapfv(mapsize)" );
return;
}
}
FLUSH_VERTICES(ctx, _NEW_PIXEL);
if (ctx->Unpack.BufferObj->Name) {
/* unpack pixelmap from PBO */
GLubyte *buf;
/* Note, need to use DefaultPacking and Unpack's buffer object */
ctx->DefaultPacking.BufferObj = ctx->Unpack.BufferObj;
if (!_mesa_validate_pbo_access(1, &ctx->DefaultPacking, mapsize, 1, 1,
GL_INTENSITY, GL_FLOAT, values)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glPixelMapfv(invalid PBO access)");
return;
}
/* restore */
ctx->DefaultPacking.BufferObj = ctx->Array.NullBufferObj;
buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT,
GL_READ_ONLY_ARB,
ctx->Unpack.BufferObj);
if (!buf) {
/* buffer is already mapped - that's an error */
_mesa_error(ctx, GL_INVALID_OPERATION,
"glPixelMapfv(PBO is mapped)");
return;
}
values = (const GLfloat *) ADD_POINTERS(buf, values);
}
else if (!values) {
return;
}
store_pixelmap(ctx, map, mapsize, values);
if (ctx->Unpack.BufferObj->Name) {
ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT,
ctx->Unpack.BufferObj);
}
}
/**
* Parse a texture image source:
* [TEX0 | TEX1 | .. | TEX15] , [1D | 2D | 3D | CUBE | RECT]
*/
static GLboolean
Parse_TextureImageId(struct parse_state *parseState,
GLubyte *texUnit, GLubyte *texTargetBit)
{
GLubyte imageSrc[100];
GLint unit;
if (!Parse_Token(parseState, imageSrc))
RETURN_ERROR;
if (imageSrc[0] != 'T' ||
imageSrc[1] != 'E' ||
imageSrc[2] != 'X') {
RETURN_ERROR1("Expected TEX# source");
}
unit = atoi((const char *) imageSrc + 3);
if ((unit < 0 || unit > MAX_TEXTURE_IMAGE_UNITS) ||
(unit == 0 && (imageSrc[3] != '0' || imageSrc[4] != 0))) {
RETURN_ERROR1("Invalied TEX# source index");
}
*texUnit = unit;
if (!Parse_String(parseState, ","))
RETURN_ERROR1("Expected ,");
if (Parse_String(parseState, "1D")) {
*texTargetBit = TEXTURE_1D_BIT;
}
else if (Parse_String(parseState, "2D")) {
*texTargetBit = TEXTURE_2D_BIT;
}
else if (Parse_String(parseState, "3D")) {
*texTargetBit = TEXTURE_3D_BIT;
}
else if (Parse_String(parseState, "CUBE")) {
*texTargetBit = TEXTURE_CUBE_BIT;
}
else if (Parse_String(parseState, "RECT")) {
*texTargetBit = TEXTURE_RECT_BIT;
}
else {
RETURN_ERROR1("Invalid texture target token");
}
/* update record of referenced texture units */
parseState->texturesUsed[*texUnit] |= *texTargetBit;
if (_mesa_bitcount(parseState->texturesUsed[*texUnit]) > 1) {
RETURN_ERROR1("Only one texture target can be used per texture unit.");
}
return GL_TRUE;
}
/*
* Create a new X/Mesa visual.
* Input: display - X11 display
* visinfo - an XVisualInfo pointer
* rgb_flag - GL_TRUE = RGB mode,
* GL_FALSE = color index mode
* alpha_flag - alpha buffer requested?
* db_flag - GL_TRUE = double-buffered,
* GL_FALSE = single buffered
* stereo_flag - stereo visual?
* ximage_flag - GL_TRUE = use an XImage for back buffer,
* GL_FALSE = use an off-screen pixmap for back buffer
* depth_size - requested bits/depth values, or zero
* stencil_size - requested bits/stencil values, or zero
* accum_red_size - requested bits/red accum values, or zero
* accum_green_size - requested bits/green accum values, or zero
* accum_blue_size - requested bits/blue accum values, or zero
* accum_alpha_size - requested bits/alpha accum values, or zero
* num_samples - number of samples/pixel if multisampling, or zero
* level - visual level, usually 0
* visualCaveat - ala the GLX extension, usually GLX_NONE
* Return; a new XMesaVisual or 0 if error.
*/
PUBLIC
XMesaVisual XMesaCreateVisual( Display *display,
XVisualInfo * visinfo,
GLboolean rgb_flag,
GLboolean alpha_flag,
GLboolean db_flag,
GLboolean stereo_flag,
GLboolean ximage_flag,
GLint depth_size,
GLint stencil_size,
GLint accum_red_size,
GLint accum_green_size,
GLint accum_blue_size,
GLint accum_alpha_size,
GLint num_samples,
GLint level,
GLint visualCaveat )
{
XMesaDisplay xmdpy = xmesa_init_display(display);
XMesaVisual v;
GLint red_bits, green_bits, blue_bits, alpha_bits;
if (!xmdpy)
return NULL;
/* For debugging only */
if (_mesa_getenv("MESA_XSYNC")) {
/* This makes debugging X easier.
* In your debugger, set a breakpoint on _XError to stop when an
* X protocol error is generated.
*/
XSynchronize( display, 1 );
}
v = (XMesaVisual) CALLOC_STRUCT(xmesa_visual);
if (!v) {
return NULL;
}
v->display = display;
/* Save a copy of the XVisualInfo struct because the user may Xfree()
* the struct but we may need some of the information contained in it
* at a later time.
*/
v->visinfo = (XVisualInfo *) malloc(sizeof(*visinfo));
if (!v->visinfo) {
free(v);
return NULL;
}
memcpy(v->visinfo, visinfo, sizeof(*visinfo));
v->ximage_flag = ximage_flag;
v->mesa_visual.redMask = visinfo->red_mask;
v->mesa_visual.greenMask = visinfo->green_mask;
v->mesa_visual.blueMask = visinfo->blue_mask;
v->visualID = visinfo->visualid;
v->screen = visinfo->screen;
#if !(defined(__cplusplus) || defined(c_plusplus))
v->visualType = xmesa_convert_from_x_visual_type(visinfo->class);
#else
v->visualType = xmesa_convert_from_x_visual_type(visinfo->c_class);
#endif
v->mesa_visual.visualRating = visualCaveat;
if (alpha_flag)
v->mesa_visual.alphaBits = 8;
(void) initialize_visual_and_buffer( v, NULL, rgb_flag, 0, 0 );
{
const int xclass = v->visualType;
if (xclass == GLX_TRUE_COLOR || xclass == GLX_DIRECT_COLOR) {
red_bits = _mesa_bitcount(GET_REDMASK(v));
green_bits = _mesa_bitcount(GET_GREENMASK(v));
blue_bits = _mesa_bitcount(GET_BLUEMASK(v));
}
else {
/* this is an approximation */
int depth;
depth = v->visinfo->depth;
red_bits = depth / 3;
depth -= red_bits;
green_bits = depth / 2;
depth -= green_bits;
blue_bits = depth;
alpha_bits = 0;
assert( red_bits + green_bits + blue_bits == v->visinfo->depth );
}
alpha_bits = v->mesa_visual.alphaBits;
}
/* initialize visual */
{
struct gl_config *vis = &v->mesa_visual;
vis->rgbMode = GL_TRUE;
vis->doubleBufferMode = db_flag;
vis->stereoMode = stereo_flag;
vis->redBits = red_bits;
vis->greenBits = green_bits;
vis->blueBits = blue_bits;
vis->alphaBits = alpha_bits;
vis->rgbBits = red_bits + green_bits + blue_bits;
vis->indexBits = 0;
vis->depthBits = depth_size;
vis->stencilBits = stencil_size;
vis->accumRedBits = accum_red_size;
vis->accumGreenBits = accum_green_size;
vis->accumBlueBits = accum_blue_size;
vis->accumAlphaBits = accum_alpha_size;
vis->haveAccumBuffer = accum_red_size > 0;
vis->haveDepthBuffer = depth_size > 0;
vis->haveStencilBuffer = stencil_size > 0;
vis->numAuxBuffers = 0;
vis->level = 0;
vis->sampleBuffers = 0;
vis->samples = 0;
}
v->stvis.buffer_mask = ST_ATTACHMENT_FRONT_LEFT_MASK;
if (db_flag)
v->stvis.buffer_mask |= ST_ATTACHMENT_BACK_LEFT_MASK;
if (stereo_flag) {
v->stvis.buffer_mask |= ST_ATTACHMENT_FRONT_RIGHT_MASK;
if (db_flag)
v->stvis.buffer_mask |= ST_ATTACHMENT_BACK_RIGHT_MASK;
}
v->stvis.color_format = choose_pixel_format(v);
if (v->stvis.color_format == PIPE_FORMAT_NONE) {
free(v->visinfo);
free(v);
return NULL;
}
v->stvis.depth_stencil_format =
choose_depth_stencil_format(xmdpy, depth_size, stencil_size);
v->stvis.accum_format = (accum_red_size +
accum_green_size + accum_blue_size + accum_alpha_size) ?
PIPE_FORMAT_R16G16B16A16_SNORM : PIPE_FORMAT_NONE;
v->stvis.samples = num_samples;
v->stvis.render_buffer = ST_ATTACHMENT_INVALID;
/* XXX minor hack */
v->mesa_visual.level = level;
return v;
}
/**
* Simple case: Blit color, depth or stencil with no scaling or flipping.
* XXX we could easily support vertical flipping here.
*/
static void
simple_blit(struct gl_context *ctx,
GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
GLbitfield buffer)
{
struct gl_renderbuffer *readRb, *drawRb;
const GLint width = srcX1 - srcX0;
const GLint height = srcY1 - srcY0;
GLint row, srcY, dstY, yStep;
GLint comps, bytesPerRow;
void *rowBuffer;
/* only one buffer */
ASSERT(_mesa_bitcount(buffer) == 1);
/* no flipping checks */
ASSERT(srcX0 < srcX1);
ASSERT(srcY0 < srcY1);
ASSERT(dstX0 < dstX1);
ASSERT(dstY0 < dstY1);
/* size checks */
ASSERT(srcX1 - srcX0 == dstX1 - dstX0);
ASSERT(srcY1 - srcY0 == dstY1 - dstY0);
/* determine if copy should be bottom-to-top or top-to-bottom */
if (srcY0 > dstY0) {
/* src above dst: copy bottom-to-top */
yStep = 1;
srcY = srcY0;
dstY = dstY0;
}
else {
/* src below dst: copy top-to-bottom */
yStep = -1;
srcY = srcY1 - 1;
dstY = dstY1 - 1;
}
switch (buffer) {
case GL_COLOR_BUFFER_BIT:
readRb = ctx->ReadBuffer->_ColorReadBuffer;
drawRb = ctx->DrawBuffer->_ColorDrawBuffers[0];
comps = 4;
break;
case GL_DEPTH_BUFFER_BIT:
readRb = ctx->ReadBuffer->_DepthBuffer;
drawRb = ctx->DrawBuffer->_DepthBuffer;
comps = 1;
break;
case GL_STENCIL_BUFFER_BIT:
readRb = ctx->ReadBuffer->_StencilBuffer;
drawRb = ctx->DrawBuffer->_StencilBuffer;
comps = 1;
break;
default:
_mesa_problem(ctx, "unexpected buffer in simple_blit()");
return;
}
ASSERT(readRb->DataType == drawRb->DataType);
/* compute bytes per row */
switch (readRb->DataType) {
case GL_UNSIGNED_BYTE:
bytesPerRow = comps * width * sizeof(GLubyte);
break;
case GL_UNSIGNED_SHORT:
bytesPerRow = comps * width * sizeof(GLushort);
break;
case GL_UNSIGNED_INT:
bytesPerRow = comps * width * sizeof(GLuint);
break;
case GL_FLOAT:
bytesPerRow = comps * width * sizeof(GLfloat);
break;
default:
_mesa_problem(ctx, "unexpected buffer type in simple_blit");
return;
}
/* allocate the row buffer */
rowBuffer = malloc(bytesPerRow);
if (!rowBuffer) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glBlitFrameBufferEXT");
return;
}
for (row = 0; row < height; row++) {
readRb->GetRow(ctx, readRb, width, srcX0, srcY, rowBuffer);
drawRb->PutRow(ctx, drawRb, width, dstX0, dstY, rowBuffer, NULL);
srcY += yStep;
dstY += yStep;
}
free(rowBuffer);
}
/**
* Recompute the value of swrast->_RasterMask, etc. according to
* the current context. The _RasterMask field can be easily tested by
* drivers to determine certain basic GL state (does the primitive need
* stenciling, logic-op, fog, etc?).
*/
static void
_swrast_update_rasterflags( GLcontext *ctx )
{
GLuint rasterMask = 0;
if (ctx->Color.AlphaEnabled) rasterMask |= ALPHATEST_BIT;
if (ctx->Color.BlendEnabled) rasterMask |= BLEND_BIT;
if (ctx->Depth.Test) rasterMask |= DEPTH_BIT;
if (ctx->Fog.Enabled) rasterMask |= FOG_BIT;
if (ctx->Scissor.Enabled) rasterMask |= CLIP_BIT;
if (ctx->Stencil.Enabled) rasterMask |= STENCIL_BIT;
if (ctx->Visual.rgbMode) {
const GLuint colorMask = *((GLuint *) &ctx->Color.ColorMask);
if (colorMask != 0xffffffff) rasterMask |= MASKING_BIT;
if (ctx->Color._LogicOpEnabled) rasterMask |= LOGIC_OP_BIT;
if (ctx->Texture._EnabledUnits) rasterMask |= TEXTURE_BIT;
}
else {
if (ctx->Color.IndexMask != 0xffffffff) rasterMask |= MASKING_BIT;
if (ctx->Color.IndexLogicOpEnabled) rasterMask |= LOGIC_OP_BIT;
}
if (ctx->DrawBuffer->UseSoftwareAlphaBuffers
&& ctx->Color.ColorMask[ACOMP]
&& ctx->Color.DrawBuffer != GL_NONE)
rasterMask |= ALPHABUF_BIT;
if ( ctx->Viewport.X < 0
|| ctx->Viewport.X + ctx->Viewport.Width > (GLint) ctx->DrawBuffer->Width
|| ctx->Viewport.Y < 0
|| ctx->Viewport.Y + ctx->Viewport.Height > (GLint) ctx->DrawBuffer->Height) {
rasterMask |= CLIP_BIT;
}
if (ctx->Depth.OcclusionTest || ctx->Occlusion.Active)
rasterMask |= OCCLUSION_BIT;
/* If we're not drawing to exactly one color buffer set the
* MULTI_DRAW_BIT flag. Also set it if we're drawing to no
* buffers or the RGBA or CI mask disables all writes.
*/
if (_mesa_bitcount(ctx->Color._DrawDestMask[0]) != 1) {
/* more than one color buffer designated for writing (or zero buffers) */
rasterMask |= MULTI_DRAW_BIT;
}
else if (ctx->Visual.rgbMode && *((GLuint *) ctx->Color.ColorMask) == 0) {
rasterMask |= MULTI_DRAW_BIT; /* all RGBA channels disabled */
}
else if (!ctx->Visual.rgbMode && ctx->Color.IndexMask==0) {
rasterMask |= MULTI_DRAW_BIT; /* all color index bits disabled */
}
if (ctx->FragmentProgram._Enabled) {
rasterMask |= FRAGPROG_BIT;
}
if (ctx->ATIFragmentShader._Enabled) {
rasterMask |= ATIFRAGSHADER_BIT;
}
SWRAST_CONTEXT(ctx)->_RasterMask = rasterMask;
}
/**
* Called by glDrawBuffersARB; specifies the destination color renderbuffers
* for N fragment program color outputs.
* \sa _mesa_DrawBuffer
* \param n number of outputs
* \param buffers array [n] of renderbuffer names. Unlike glDrawBuffer, the
* names cannot specify more than one buffer. For example,
* GL_FRONT_AND_BACK is illegal.
*/
void GLAPIENTRY
_mesa_DrawBuffers(GLsizei n, const GLenum *buffers)
{
GLint output;
GLbitfield usedBufferMask, supportedMask;
GLbitfield destMask[MAX_DRAW_BUFFERS];
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
/* Turns out n==0 is a valid input that should not produce an error.
* The remaining code below correctly handles the n==0 case.
*/
if (n < 0 || n > (GLsizei) ctx->Const.MaxDrawBuffers) {
_mesa_error(ctx, GL_INVALID_VALUE, "glDrawBuffersARB(n)");
return;
}
supportedMask = supported_buffer_bitmask(ctx, ctx->DrawBuffer);
usedBufferMask = 0x0;
/* complicated error checking... */
for (output = 0; output < n; output++) {
if (buffers[output] == GL_NONE) {
destMask[output] = 0x0;
}
else {
destMask[output] = draw_buffer_enum_to_bitmask(buffers[output]);
if (destMask[output] == BAD_MASK
|| _mesa_bitcount(destMask[output]) > 1) {
_mesa_error(ctx, GL_INVALID_ENUM, "glDrawBuffersARB(buffer)");
return;
}
destMask[output] &= supportedMask;
if (destMask[output] == 0) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glDrawBuffersARB(unsupported buffer)");
return;
}
if (destMask[output] & usedBufferMask) {
/* can't specify a dest buffer more than once! */
_mesa_error(ctx, GL_INVALID_OPERATION,
"glDrawBuffersARB(duplicated buffer)");
return;
}
/* update bitmask */
usedBufferMask |= destMask[output];
}
}
/* OK, if we get here, there were no errors so set the new state */
_mesa_drawbuffers(ctx, n, buffers, destMask);
/*
* Call device driver function. Note that n can be equal to 0,
* in which case we don't want to reference buffers[0], which
* may not be valid.
*/
if (ctx->Driver.DrawBuffers)
ctx->Driver.DrawBuffers(ctx, n, buffers);
else if (ctx->Driver.DrawBuffer)
ctx->Driver.DrawBuffer(ctx, n > 0 ? buffers[0] : GL_NONE);
}
/**
* Helper function to set the GL_DRAW_BUFFER state in the context and
* current FBO. Called via glDrawBuffer(), glDrawBuffersARB()
*
* All error checking will have been done prior to calling this function
* so nothing should go wrong at this point.
*
* \param ctx current context
* \param n number of color outputs to set
* \param buffers array[n] of colorbuffer names, like GL_LEFT.
* \param destMask array[n] of BUFFER_BIT_* bitmasks which correspond to the
* colorbuffer names. (i.e. GL_FRONT_AND_BACK =>
* BUFFER_BIT_FRONT_LEFT | BUFFER_BIT_BACK_LEFT).
*/
void
_mesa_drawbuffers(GLcontext *ctx, GLuint n, const GLenum *buffers,
const GLbitfield *destMask)
{
struct gl_framebuffer *fb = ctx->DrawBuffer;
GLbitfield mask[MAX_DRAW_BUFFERS];
GLboolean newState = GL_FALSE;
if (!destMask) {
/* compute destMask values now */
const GLbitfield supportedMask = supported_buffer_bitmask(ctx, fb);
GLuint output;
for (output = 0; output < n; output++) {
mask[output] = draw_buffer_enum_to_bitmask(buffers[output]);
ASSERT(mask[output] != BAD_MASK);
mask[output] &= supportedMask;
}
destMask = mask;
}
/*
* If n==1, destMask[0] may have up to four bits set.
* Otherwise, destMask[x] can only have one bit set.
*/
if (n == 1) {
GLuint count = 0, destMask0 = destMask[0];
while (destMask0) {
GLint bufIndex = _mesa_ffs(destMask0) - 1;
if (fb->_ColorDrawBufferIndexes[count] != bufIndex) {
fb->_ColorDrawBufferIndexes[count] = bufIndex;
newState = GL_TRUE;
}
count++;
destMask0 &= ~(1 << bufIndex);
}
fb->ColorDrawBuffer[0] = buffers[0];
if (fb->_NumColorDrawBuffers != count) {
fb->_NumColorDrawBuffers = count;
newState = GL_TRUE;
}
}
else {
GLuint buf, count = 0;
for (buf = 0; buf < n; buf++ ) {
if (destMask[buf]) {
GLint bufIndex = _mesa_ffs(destMask[buf]) - 1;
/* only one bit should be set in the destMask[buf] field */
ASSERT(_mesa_bitcount(destMask[buf]) == 1);
if (fb->_ColorDrawBufferIndexes[buf] != bufIndex) {
fb->_ColorDrawBufferIndexes[buf] = bufIndex;
newState = GL_TRUE;
}
fb->ColorDrawBuffer[buf] = buffers[buf];
count = buf + 1;
}
else {
if (fb->_ColorDrawBufferIndexes[buf] != -1) {
fb->_ColorDrawBufferIndexes[buf] = -1;
newState = GL_TRUE;
}
}
}
/* set remaining outputs to -1 (GL_NONE) */
while (buf < ctx->Const.MaxDrawBuffers) {
if (fb->_ColorDrawBufferIndexes[buf] != -1) {
fb->_ColorDrawBufferIndexes[buf] = -1;
newState = GL_TRUE;
}
fb->ColorDrawBuffer[buf] = GL_NONE;
buf++;
}
fb->_NumColorDrawBuffers = count;
}
if (fb->Name == 0) {
/* also set context drawbuffer state */
GLuint buf;
for (buf = 0; buf < ctx->Const.MaxDrawBuffers; buf++) {
if (ctx->Color.DrawBuffer[buf] != fb->ColorDrawBuffer[buf]) {
ctx->Color.DrawBuffer[buf] = fb->ColorDrawBuffer[buf];
newState = GL_TRUE;
}
}
}
if (newState)
FLUSH_VERTICES(ctx, _NEW_BUFFERS);
}
/**
* Partition the CURBE between the various users of constant values.
*
* If the users all fit within the previous allocatation, we avoid changing
* the layout because that means reuploading all unit state and uploading new
* constant buffers.
*/
static void calculate_curbe_offsets( struct brw_context *brw )
{
struct gl_context *ctx = &brw->ctx;
/* BRW_NEW_FS_PROG_DATA */
const GLuint nr_fp_regs = (brw->wm.base.prog_data->nr_params + 15) / 16;
/* BRW_NEW_VS_PROG_DATA */
const GLuint nr_vp_regs = (brw->vs.base.prog_data->nr_params + 15) / 16;
GLuint nr_clip_regs = 0;
GLuint total_regs;
/* _NEW_TRANSFORM */
if (ctx->Transform.ClipPlanesEnabled) {
GLuint nr_planes = 6 + _mesa_bitcount(ctx->Transform.ClipPlanesEnabled);
nr_clip_regs = (nr_planes * 4 + 15) / 16;
}
total_regs = nr_fp_regs + nr_vp_regs + nr_clip_regs;
/* The CURBE allocation size is limited to 32 512-bit units (128 EU
* registers, or 1024 floats). See CS_URB_STATE in the gen4 or gen5
* (volume 1, part 1) PRMs.
*
* Note that in brw_fs.cpp we're only loading up to 16 EU registers of
* values as push constants before spilling to pull constants, and in
* brw_vec4.cpp we're loading up to 32 registers of push constants. An EU
* register is 1/2 of one of these URB entry units, so that leaves us 16 EU
* regs for clip.
*/
assert(total_regs <= 32);
/* Lazy resize:
*/
if (nr_fp_regs > brw->curbe.wm_size ||
nr_vp_regs > brw->curbe.vs_size ||
nr_clip_regs != brw->curbe.clip_size ||
(total_regs < brw->curbe.total_size / 4 &&
brw->curbe.total_size > 16)) {
GLuint reg = 0;
/* Calculate a new layout:
*/
reg = 0;
brw->curbe.wm_start = reg;
brw->curbe.wm_size = nr_fp_regs; reg += nr_fp_regs;
brw->curbe.clip_start = reg;
brw->curbe.clip_size = nr_clip_regs; reg += nr_clip_regs;
brw->curbe.vs_start = reg;
brw->curbe.vs_size = nr_vp_regs; reg += nr_vp_regs;
brw->curbe.total_size = reg;
if (0)
fprintf(stderr, "curbe wm %d+%d clip %d+%d vs %d+%d\n",
brw->curbe.wm_start,
brw->curbe.wm_size,
brw->curbe.clip_start,
brw->curbe.clip_size,
brw->curbe.vs_start,
brw->curbe.vs_size );
brw->ctx.NewDriverState |= BRW_NEW_CURBE_OFFSETS;
}
}
/**
* \note This routine refers to derived texture matrix values to
* compute the ENABLE_TEXMAT flags, but is only called on
* _NEW_TEXTURE. On changes to _NEW_TEXTURE_MATRIX, the ENABLE_TEXMAT
* flags are updated by _mesa_update_texture_matrices, above.
*
* \param ctx GL context.
*/
static void
update_texture_state( struct gl_context *ctx )
{
GLuint unit;
struct gl_program *fprog = NULL;
struct gl_program *vprog = NULL;
GLbitfield enabledFragUnits = 0x0;
if (ctx->Shader.CurrentVertexProgram &&
ctx->Shader.CurrentVertexProgram->LinkStatus) {
vprog = ctx->Shader.CurrentVertexProgram->_LinkedShaders[MESA_SHADER_VERTEX]->Program;
} else if (ctx->VertexProgram._Enabled) {
/* XXX enable this if/when non-shader vertex programs get
* texture fetches:
vprog = &ctx->VertexProgram.Current->Base;
*/
}
if (ctx->Shader.CurrentFragmentProgram &&
ctx->Shader.CurrentFragmentProgram->LinkStatus) {
fprog = ctx->Shader.CurrentFragmentProgram->_LinkedShaders[MESA_SHADER_FRAGMENT]->Program;
}
else if (ctx->FragmentProgram._Enabled) {
fprog = &ctx->FragmentProgram.Current->Base;
}
/* FINISHME: Geometry shader texture accesses should also be considered
* FINISHME: here.
*/
/* TODO: only set this if there are actual changes */
ctx->NewState |= _NEW_TEXTURE;
ctx->Texture._EnabledUnits = 0x0;
ctx->Texture._GenFlags = 0x0;
ctx->Texture._TexMatEnabled = 0x0;
ctx->Texture._TexGenEnabled = 0x0;
/*
* Update texture unit state.
*/
for (unit = 0; unit < ctx->Const.MaxCombinedTextureImageUnits; unit++) {
struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
GLbitfield enabledVertTargets = 0x0;
GLbitfield enabledFragTargets = 0x0;
GLbitfield enabledTargets = 0x0;
GLuint texIndex;
/* Get the bitmask of texture target enables.
* enableBits will be a mask of the TEXTURE_*_BIT flags indicating
* which texture targets are enabled (fixed function) or referenced
* by a fragment program/program. When multiple flags are set, we'll
* settle on the one with highest priority (see below).
*/
if (vprog) {
enabledVertTargets |= vprog->TexturesUsed[unit];
}
if (fprog) {
enabledFragTargets |= fprog->TexturesUsed[unit];
}
else {
/* fixed-function fragment program */
enabledFragTargets |= texUnit->Enabled;
}
enabledTargets = enabledVertTargets | enabledFragTargets;
texUnit->_ReallyEnabled = 0x0;
if (enabledTargets == 0x0) {
/* neither vertex nor fragment processing uses this unit */
continue;
}
/* Look for the highest priority texture target that's enabled (or used
* by the vert/frag shaders) and "complete". That's the one we'll use
* for texturing. If we're using vert/frag program we're guaranteed
* that bitcount(enabledBits) <= 1.
* Note that the TEXTURE_x_INDEX values are in high to low priority.
*/
for (texIndex = 0; texIndex < NUM_TEXTURE_TARGETS; texIndex++) {
if (enabledTargets & (1 << texIndex)) {
struct gl_texture_object *texObj = texUnit->CurrentTex[texIndex];
struct gl_sampler_object *sampler = texUnit->Sampler ?
texUnit->Sampler : &texObj->Sampler;
if (!_mesa_is_texture_complete(texObj, sampler)) {
_mesa_test_texobj_completeness(ctx, texObj);
}
if (_mesa_is_texture_complete(texObj, sampler)) {
texUnit->_ReallyEnabled = 1 << texIndex;
_mesa_reference_texobj(&texUnit->_Current, texObj);
break;
}
}
}
if (!texUnit->_ReallyEnabled) {
if (fprog) {
/* If we get here it means the shader is expecting a texture
* object, but there isn't one (or it's incomplete). Use the
* fallback texture.
*/
struct gl_texture_object *texObj;
gl_texture_index texTarget;
assert(_mesa_bitcount(enabledTargets) == 1);
texTarget = (gl_texture_index) (ffs(enabledTargets) - 1);
texObj = _mesa_get_fallback_texture(ctx, texTarget);
_mesa_reference_texobj(&texUnit->_Current, texObj);
texUnit->_ReallyEnabled = 1 << texTarget;
}
else {
/* fixed-function: texture unit is really disabled */
continue;
}
}
/* if we get here, we know this texture unit is enabled */
ctx->Texture._EnabledUnits |= (1 << unit);
if (enabledFragTargets)
enabledFragUnits |= (1 << unit);
update_tex_combine(ctx, texUnit);
}
/* Determine which texture coordinate sets are actually needed */
if (fprog) {
const GLuint coordMask = (1 << MAX_TEXTURE_COORD_UNITS) - 1;
ctx->Texture._EnabledCoordUnits
= (fprog->InputsRead >> FRAG_ATTRIB_TEX0) & coordMask;
}
else {
void GLAPIENTRY
_mesa_ColorTable( GLenum target, GLenum internalFormat,
GLsizei width, GLenum format, GLenum type,
const GLvoid *data )
{
static const GLfloat one[4] = { 1.0, 1.0, 1.0, 1.0 };
static const GLfloat zero[4] = { 0.0, 0.0, 0.0, 0.0 };
GET_CURRENT_CONTEXT(ctx);
struct gl_texture_unit *texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
struct gl_texture_object *texObj = NULL;
struct gl_color_table *table = NULL;
GLboolean proxy = GL_FALSE;
GLint baseFormat;
const GLfloat *scale = one, *bias = zero;
GLint comps;
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); /* too complex */
switch (target) {
case GL_TEXTURE_1D:
texObj = texUnit->Current1D;
table = &texObj->Palette;
break;
case GL_TEXTURE_2D:
texObj = texUnit->Current2D;
table = &texObj->Palette;
break;
case GL_TEXTURE_3D:
texObj = texUnit->Current3D;
table = &texObj->Palette;
break;
case GL_TEXTURE_CUBE_MAP_ARB:
if (!ctx->Extensions.ARB_texture_cube_map) {
_mesa_error(ctx, GL_INVALID_ENUM, "glColorTable(target)");
return;
}
texObj = texUnit->CurrentCubeMap;
table = &texObj->Palette;
break;
case GL_PROXY_TEXTURE_1D:
texObj = ctx->Texture.Proxy1D;
table = &texObj->Palette;
proxy = GL_TRUE;
break;
case GL_PROXY_TEXTURE_2D:
texObj = ctx->Texture.Proxy2D;
table = &texObj->Palette;
proxy = GL_TRUE;
break;
case GL_PROXY_TEXTURE_3D:
texObj = ctx->Texture.Proxy3D;
table = &texObj->Palette;
proxy = GL_TRUE;
break;
case GL_PROXY_TEXTURE_CUBE_MAP_ARB:
if (!ctx->Extensions.ARB_texture_cube_map) {
_mesa_error(ctx, GL_INVALID_ENUM, "glColorTable(target)");
return;
}
texObj = ctx->Texture.ProxyCubeMap;
table = &texObj->Palette;
break;
case GL_SHARED_TEXTURE_PALETTE_EXT:
table = &ctx->Texture.Palette;
break;
case GL_COLOR_TABLE:
table = &ctx->ColorTable[COLORTABLE_PRECONVOLUTION];
scale = ctx->Pixel.ColorTableScale[COLORTABLE_PRECONVOLUTION];
bias = ctx->Pixel.ColorTableBias[COLORTABLE_PRECONVOLUTION];
break;
case GL_PROXY_COLOR_TABLE:
table = &ctx->ProxyColorTable[COLORTABLE_PRECONVOLUTION];
proxy = GL_TRUE;
break;
case GL_TEXTURE_COLOR_TABLE_SGI:
if (!ctx->Extensions.SGI_texture_color_table) {
_mesa_error(ctx, GL_INVALID_ENUM, "glColorTable(target)");
return;
}
table = &(texUnit->ColorTable);
scale = ctx->Pixel.TextureColorTableScale;
bias = ctx->Pixel.TextureColorTableBias;
break;
case GL_PROXY_TEXTURE_COLOR_TABLE_SGI:
if (!ctx->Extensions.SGI_texture_color_table) {
_mesa_error(ctx, GL_INVALID_ENUM, "glColorTable(target)");
return;
}
table = &(texUnit->ProxyColorTable);
proxy = GL_TRUE;
break;
case GL_POST_CONVOLUTION_COLOR_TABLE:
table = &ctx->ColorTable[COLORTABLE_POSTCONVOLUTION];
scale = ctx->Pixel.ColorTableScale[COLORTABLE_POSTCONVOLUTION];
bias = ctx->Pixel.ColorTableBias[COLORTABLE_POSTCONVOLUTION];
break;
case GL_PROXY_POST_CONVOLUTION_COLOR_TABLE:
table = &ctx->ProxyColorTable[COLORTABLE_POSTCONVOLUTION];
proxy = GL_TRUE;
break;
case GL_POST_COLOR_MATRIX_COLOR_TABLE:
table = &ctx->ColorTable[COLORTABLE_POSTCOLORMATRIX];
scale = ctx->Pixel.ColorTableScale[COLORTABLE_POSTCOLORMATRIX];
bias = ctx->Pixel.ColorTableBias[COLORTABLE_POSTCOLORMATRIX];
break;
case GL_PROXY_POST_COLOR_MATRIX_COLOR_TABLE:
table = &ctx->ProxyColorTable[COLORTABLE_POSTCOLORMATRIX];
proxy = GL_TRUE;
break;
default:
_mesa_error(ctx, GL_INVALID_ENUM, "glColorTable(target)");
return;
}
assert(table);
if (!_mesa_is_legal_format_and_type(ctx, format, type) ||
format == GL_INTENSITY) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glColorTable(format or type)");
return;
}
baseFormat = base_colortab_format(internalFormat);
if (baseFormat < 0) {
_mesa_error(ctx, GL_INVALID_ENUM, "glColorTable(internalFormat)");
return;
}
if (width < 0 || (width != 0 && _mesa_bitcount(width) != 1)) {
/* error */
if (proxy) {
table->Size = 0;
table->InternalFormat = (GLenum) 0;
table->_BaseFormat = (GLenum) 0;
}
else {
_mesa_error(ctx, GL_INVALID_VALUE, "glColorTable(width=%d)", width);
}
return;
}
if (width > (GLsizei) ctx->Const.MaxColorTableSize) {
if (proxy) {
table->Size = 0;
table->InternalFormat = (GLenum) 0;
table->_BaseFormat = (GLenum) 0;
}
else {
_mesa_error(ctx, GL_TABLE_TOO_LARGE, "glColorTable(width)");
}
return;
}
table->Size = width;
table->InternalFormat = internalFormat;
table->_BaseFormat = (GLenum) baseFormat;
comps = _mesa_components_in_format(table->_BaseFormat);
assert(comps > 0); /* error should have been caught sooner */
if (!proxy) {
_mesa_free_colortable_data(table);
if (width > 0) {
table->TableF = (GLfloat *) _mesa_malloc(comps * width * sizeof(GLfloat));
table->TableUB = (GLubyte *) _mesa_malloc(comps * width * sizeof(GLubyte));
if (!table->TableF || !table->TableUB) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glColorTable");
return;
}
store_colortable_entries(ctx, table,
0, width, /* start, count */
format, type, data,
scale[0], bias[0],
scale[1], bias[1],
scale[2], bias[2],
scale[3], bias[3]);
}
} /* proxy */
/* do this after the table's Type and Format are set */
set_component_sizes(table);
if (texObj || target == GL_SHARED_TEXTURE_PALETTE_EXT) {
/* texture object palette, texObj==NULL means the shared palette */
if (ctx->Driver.UpdateTexturePalette) {
(*ctx->Driver.UpdateTexturePalette)( ctx, texObj );
}
}
ctx->NewState |= _NEW_PIXEL;
}
/*
* Create a new X/Mesa visual.
* Input: display - X11 display
* visinfo - an XVisualInfo pointer
* rgb_flag - GL_TRUE = RGB mode,
* GL_FALSE = color index mode
* alpha_flag - alpha buffer requested?
* db_flag - GL_TRUE = double-buffered,
* GL_FALSE = single buffered
* stereo_flag - stereo visual?
* ximage_flag - GL_TRUE = use an XImage for back buffer,
* GL_FALSE = use an off-screen pixmap for back buffer
* depth_size - requested bits/depth values, or zero
* stencil_size - requested bits/stencil values, or zero
* accum_red_size - requested bits/red accum values, or zero
* accum_green_size - requested bits/green accum values, or zero
* accum_blue_size - requested bits/blue accum values, or zero
* accum_alpha_size - requested bits/alpha accum values, or zero
* num_samples - number of samples/pixel if multisampling, or zero
* level - visual level, usually 0
* visualCaveat - ala the GLX extension, usually GLX_NONE
* Return; a new XMesaVisual or 0 if error.
*/
PUBLIC
XMesaVisual XMesaCreateVisual( XMesaDisplay *display,
XMesaVisualInfo visinfo,
GLboolean rgb_flag,
GLboolean alpha_flag,
GLboolean db_flag,
GLboolean stereo_flag,
GLboolean ximage_flag,
GLint depth_size,
GLint stencil_size,
GLint accum_red_size,
GLint accum_green_size,
GLint accum_blue_size,
GLint accum_alpha_size,
GLint num_samples,
GLint level,
GLint visualCaveat )
{
char *gamma;
XMesaVisual v;
GLint red_bits, green_bits, blue_bits, alpha_bits;
/* For debugging only */
if (_mesa_getenv("MESA_XSYNC")) {
/* This makes debugging X easier.
* In your debugger, set a breakpoint on _XError to stop when an
* X protocol error is generated.
*/
XSynchronize( display, 1 );
}
/* Color-index rendering not supported. */
if (!rgb_flag)
return NULL;
v = (XMesaVisual) CALLOC_STRUCT(xmesa_visual);
if (!v) {
return NULL;
}
v->display = display;
/* Save a copy of the XVisualInfo struct because the user may Xfree()
* the struct but we may need some of the information contained in it
* at a later time.
*/
v->visinfo = (XVisualInfo *) malloc(sizeof(*visinfo));
if(!v->visinfo) {
free(v);
return NULL;
}
memcpy(v->visinfo, visinfo, sizeof(*visinfo));
/* check for MESA_GAMMA environment variable */
gamma = _mesa_getenv("MESA_GAMMA");
if (gamma) {
v->RedGamma = v->GreenGamma = v->BlueGamma = 0.0;
sscanf( gamma, "%f %f %f", &v->RedGamma, &v->GreenGamma, &v->BlueGamma );
if (v->RedGamma<=0.0) v->RedGamma = 1.0;
if (v->GreenGamma<=0.0) v->GreenGamma = v->RedGamma;
if (v->BlueGamma<=0.0) v->BlueGamma = v->RedGamma;
}
else {
v->RedGamma = v->GreenGamma = v->BlueGamma = 1.0;
}
v->ximage_flag = ximage_flag;
v->mesa_visual.redMask = visinfo->red_mask;
v->mesa_visual.greenMask = visinfo->green_mask;
v->mesa_visual.blueMask = visinfo->blue_mask;
v->visualID = visinfo->visualid;
v->screen = visinfo->screen;
#if !(defined(__cplusplus) || defined(c_plusplus))
v->visualType = xmesa_convert_from_x_visual_type(visinfo->class);
#else
v->visualType = xmesa_convert_from_x_visual_type(visinfo->c_class);
#endif
v->mesa_visual.visualRating = visualCaveat;
if (alpha_flag)
v->mesa_visual.alphaBits = 8;
(void) initialize_visual_and_buffer( v, NULL, 0, 0 );
{
const int xclass = v->visualType;
if (xclass == GLX_TRUE_COLOR || xclass == GLX_DIRECT_COLOR) {
red_bits = _mesa_bitcount(GET_REDMASK(v));
green_bits = _mesa_bitcount(GET_GREENMASK(v));
blue_bits = _mesa_bitcount(GET_BLUEMASK(v));
}
else {
/* this is an approximation */
int depth;
depth = GET_VISUAL_DEPTH(v);
red_bits = depth / 3;
depth -= red_bits;
green_bits = depth / 2;
depth -= green_bits;
blue_bits = depth;
alpha_bits = 0;
assert( red_bits + green_bits + blue_bits == GET_VISUAL_DEPTH(v) );
}
alpha_bits = v->mesa_visual.alphaBits;
}
if (!_mesa_initialize_visual(&v->mesa_visual,
db_flag, stereo_flag,
red_bits, green_bits,
blue_bits, alpha_bits,
depth_size,
stencil_size,
accum_red_size, accum_green_size,
accum_blue_size, accum_alpha_size,
0)) {
FREE(v);
return NULL;
}
/* XXX minor hack */
v->mesa_visual.level = level;
return v;
}
/**
* Setup RGB rendering for a window with a True/DirectColor visual.
*/
static void
setup_truecolor(XMesaVisual v, XMesaBuffer buffer, XMesaColormap cmap)
{
unsigned long rmask, gmask, bmask;
(void) buffer;
(void) cmap;
/* Compute red multiplier (mask) and bit shift */
v->rshift = 0;
rmask = GET_REDMASK(v);
while ((rmask & 1)==0) {
v->rshift++;
rmask = rmask >> 1;
}
/* Compute green multiplier (mask) and bit shift */
v->gshift = 0;
gmask = GET_GREENMASK(v);
while ((gmask & 1)==0) {
v->gshift++;
gmask = gmask >> 1;
}
/* Compute blue multiplier (mask) and bit shift */
v->bshift = 0;
bmask = GET_BLUEMASK(v);
while ((bmask & 1)==0) {
v->bshift++;
bmask = bmask >> 1;
}
/*
* Compute component-to-pixel lookup tables and dithering kernel
*/
{
static GLubyte kernel[16] = {
0*16, 8*16, 2*16, 10*16,
12*16, 4*16, 14*16, 6*16,
3*16, 11*16, 1*16, 9*16,
15*16, 7*16, 13*16, 5*16,
};
GLint rBits = _mesa_bitcount(rmask);
GLint gBits = _mesa_bitcount(gmask);
GLint bBits = _mesa_bitcount(bmask);
GLint maxBits;
GLuint i;
/* convert pixel components in [0,_mask] to RGB values in [0,255] */
for (i=0; i<=rmask; i++)
v->PixelToR[i] = (unsigned char) ((i * 255) / rmask);
for (i=0; i<=gmask; i++)
v->PixelToG[i] = (unsigned char) ((i * 255) / gmask);
for (i=0; i<=bmask; i++)
v->PixelToB[i] = (unsigned char) ((i * 255) / bmask);
/* convert RGB values from [0,255] to pixel components */
for (i=0;i<256;i++) {
GLint r = gamma_adjust(v->RedGamma, i, 255);
GLint g = gamma_adjust(v->GreenGamma, i, 255);
GLint b = gamma_adjust(v->BlueGamma, i, 255);
v->RtoPixel[i] = (r >> (8-rBits)) << v->rshift;
v->GtoPixel[i] = (g >> (8-gBits)) << v->gshift;
v->BtoPixel[i] = (b >> (8-bBits)) << v->bshift;
}
/* overflow protection */
for (i=256;i<512;i++) {
v->RtoPixel[i] = v->RtoPixel[255];
v->GtoPixel[i] = v->GtoPixel[255];
v->BtoPixel[i] = v->BtoPixel[255];
}
/* setup dithering kernel */
maxBits = rBits;
if (gBits > maxBits) maxBits = gBits;
if (bBits > maxBits) maxBits = bBits;
for (i=0;i<16;i++) {
v->Kernel[i] = kernel[i] >> maxBits;
}
v->undithered_pf = PF_Truecolor;
v->dithered_pf = (GET_VISUAL_DEPTH(v)<24) ? PF_Dither_True : PF_Truecolor;
}
/*
* Now check for TrueColor visuals which we can optimize.
*/
if ( GET_REDMASK(v) ==0x0000ff
&& GET_GREENMASK(v)==0x00ff00
&& GET_BLUEMASK(v) ==0xff0000
&& CHECK_BYTE_ORDER(v)
&& v->BitsPerPixel==32
&& v->RedGamma==1.0 && v->GreenGamma==1.0 && v->BlueGamma==1.0) {
/* common 32 bpp config used on SGI, Sun */
v->undithered_pf = v->dithered_pf = PF_8A8B8G8R; /* ABGR */
}
else if (GET_REDMASK(v) == 0xff0000
&& GET_GREENMASK(v)== 0x00ff00
&& GET_BLUEMASK(v) == 0x0000ff
&& CHECK_BYTE_ORDER(v)
&& v->RedGamma == 1.0 && v->GreenGamma == 1.0 && v->BlueGamma == 1.0){
if (v->BitsPerPixel==32) {
/* if 32 bpp, and visual indicates 8 bpp alpha channel */
if (GET_VISUAL_DEPTH(v) == 32 && v->mesa_visual.alphaBits == 8)
v->undithered_pf = v->dithered_pf = PF_8A8R8G8B; /* ARGB */
else
v->undithered_pf = v->dithered_pf = PF_8R8G8B; /* xRGB */
}
else if (v->BitsPerPixel == 24) {
v->undithered_pf = v->dithered_pf = PF_8R8G8B24; /* RGB */
}
}
else if (GET_REDMASK(v) ==0xf800
&& GET_GREENMASK(v)==0x07e0
&& GET_BLUEMASK(v) ==0x001f
&& CHECK_BYTE_ORDER(v)
&& v->BitsPerPixel==16
&& v->RedGamma==1.0 && v->GreenGamma==1.0 && v->BlueGamma==1.0) {
/* 5-6-5 RGB */
v->undithered_pf = PF_5R6G5B;
v->dithered_pf = PF_Dither_5R6G5B;
}
}
void GLAPIENTRY
_mesa_ColorTable( GLenum target, GLenum internalFormat,
GLsizei width, GLenum format, GLenum type,
const GLvoid *data )
{
GET_CURRENT_CONTEXT(ctx);
struct gl_texture_unit *texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
struct gl_texture_object *texObj = NULL;
struct gl_color_table *table = NULL;
GLboolean proxy = GL_FALSE;
GLint baseFormat;
GLfloat rScale = 1.0, gScale = 1.0, bScale = 1.0, aScale = 1.0;
GLfloat rBias = 0.0, gBias = 0.0, bBias = 0.0, aBias = 0.0;
GLenum tableType = CHAN_TYPE;
GLint comps;
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); /* too complex */
switch (target) {
case GL_TEXTURE_1D:
texObj = texUnit->Current1D;
table = &texObj->Palette;
break;
case GL_TEXTURE_2D:
texObj = texUnit->Current2D;
table = &texObj->Palette;
break;
case GL_TEXTURE_3D:
texObj = texUnit->Current3D;
table = &texObj->Palette;
break;
case GL_TEXTURE_CUBE_MAP_ARB:
if (!ctx->Extensions.ARB_texture_cube_map) {
_mesa_error(ctx, GL_INVALID_ENUM, "glColorTable(target)");
return;
}
texObj = texUnit->CurrentCubeMap;
table = &texObj->Palette;
break;
case GL_PROXY_TEXTURE_1D:
texObj = ctx->Texture.Proxy1D;
table = &texObj->Palette;
proxy = GL_TRUE;
break;
case GL_PROXY_TEXTURE_2D:
texObj = ctx->Texture.Proxy2D;
table = &texObj->Palette;
proxy = GL_TRUE;
break;
case GL_PROXY_TEXTURE_3D:
texObj = ctx->Texture.Proxy3D;
table = &texObj->Palette;
proxy = GL_TRUE;
break;
case GL_PROXY_TEXTURE_CUBE_MAP_ARB:
if (!ctx->Extensions.ARB_texture_cube_map) {
_mesa_error(ctx, GL_INVALID_ENUM, "glColorTable(target)");
return;
}
texObj = ctx->Texture.ProxyCubeMap;
table = &texObj->Palette;
break;
case GL_SHARED_TEXTURE_PALETTE_EXT:
table = &ctx->Texture.Palette;
break;
case GL_COLOR_TABLE:
table = &ctx->ColorTable;
tableType = GL_FLOAT;
rScale = ctx->Pixel.ColorTableScale[0];
gScale = ctx->Pixel.ColorTableScale[1];
bScale = ctx->Pixel.ColorTableScale[2];
aScale = ctx->Pixel.ColorTableScale[3];
rBias = ctx->Pixel.ColorTableBias[0];
gBias = ctx->Pixel.ColorTableBias[1];
bBias = ctx->Pixel.ColorTableBias[2];
aBias = ctx->Pixel.ColorTableBias[3];
break;
case GL_PROXY_COLOR_TABLE:
table = &ctx->ProxyColorTable;
proxy = GL_TRUE;
break;
case GL_TEXTURE_COLOR_TABLE_SGI:
if (!ctx->Extensions.SGI_texture_color_table) {
_mesa_error(ctx, GL_INVALID_ENUM, "glColorTable(target)");
return;
}
table = &(texUnit->ColorTable);
tableType = GL_FLOAT;
rScale = ctx->Pixel.TextureColorTableScale[0];
gScale = ctx->Pixel.TextureColorTableScale[1];
bScale = ctx->Pixel.TextureColorTableScale[2];
aScale = ctx->Pixel.TextureColorTableScale[3];
rBias = ctx->Pixel.TextureColorTableBias[0];
gBias = ctx->Pixel.TextureColorTableBias[1];
bBias = ctx->Pixel.TextureColorTableBias[2];
aBias = ctx->Pixel.TextureColorTableBias[3];
break;
case GL_PROXY_TEXTURE_COLOR_TABLE_SGI:
if (!ctx->Extensions.SGI_texture_color_table) {
_mesa_error(ctx, GL_INVALID_ENUM, "glColorTable(target)");
return;
}
table = &(texUnit->ProxyColorTable);
proxy = GL_TRUE;
break;
case GL_POST_CONVOLUTION_COLOR_TABLE:
table = &ctx->PostConvolutionColorTable;
tableType = GL_FLOAT;
rScale = ctx->Pixel.PCCTscale[0];
gScale = ctx->Pixel.PCCTscale[1];
bScale = ctx->Pixel.PCCTscale[2];
aScale = ctx->Pixel.PCCTscale[3];
rBias = ctx->Pixel.PCCTbias[0];
gBias = ctx->Pixel.PCCTbias[1];
bBias = ctx->Pixel.PCCTbias[2];
aBias = ctx->Pixel.PCCTbias[3];
break;
case GL_PROXY_POST_CONVOLUTION_COLOR_TABLE:
table = &ctx->ProxyPostConvolutionColorTable;
proxy = GL_TRUE;
break;
case GL_POST_COLOR_MATRIX_COLOR_TABLE:
table = &ctx->PostColorMatrixColorTable;
tableType = GL_FLOAT;
rScale = ctx->Pixel.PCMCTscale[0];
gScale = ctx->Pixel.PCMCTscale[1];
bScale = ctx->Pixel.PCMCTscale[2];
aScale = ctx->Pixel.PCMCTscale[3];
rBias = ctx->Pixel.PCMCTbias[0];
gBias = ctx->Pixel.PCMCTbias[1];
bBias = ctx->Pixel.PCMCTbias[2];
aBias = ctx->Pixel.PCMCTbias[3];
break;
case GL_PROXY_POST_COLOR_MATRIX_COLOR_TABLE:
table = &ctx->ProxyPostColorMatrixColorTable;
proxy = GL_TRUE;
break;
default:
_mesa_error(ctx, GL_INVALID_ENUM, "glColorTable(target)");
return;
}
assert(table);
if (!_mesa_is_legal_format_and_type(ctx, format, type) ||
format == GL_INTENSITY) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glColorTable(format or type)");
return;
}
baseFormat = base_colortab_format(internalFormat);
if (baseFormat < 0 || baseFormat == GL_COLOR_INDEX) {
_mesa_error(ctx, GL_INVALID_ENUM, "glColorTable(internalFormat)");
return;
}
if (width < 0 || (width != 0 && _mesa_bitcount(width) != 1)) {
/* error */
if (proxy) {
table->Size = 0;
table->IntFormat = (GLenum) 0;
table->Format = (GLenum) 0;
}
else {
_mesa_error(ctx, GL_INVALID_VALUE, "glColorTable(width=%d)", width);
}
return;
}
if (width > (GLsizei) ctx->Const.MaxColorTableSize) {
if (proxy) {
table->Size = 0;
table->IntFormat = (GLenum) 0;
table->Format = (GLenum) 0;
}
else {
_mesa_error(ctx, GL_TABLE_TOO_LARGE, "glColorTable(width)");
}
return;
}
table->Size = width;
table->IntFormat = internalFormat;
table->Format = (GLenum) baseFormat;
set_component_sizes(table);
comps = _mesa_components_in_format(table->Format);
assert(comps > 0); /* error should have been caught sooner */
if (!proxy) {
/* free old table, if any */
if (table->Table) {
FREE(table->Table);
table->Table = NULL;
}
if (width > 0) {
if (tableType == GL_FLOAT) {
table->Type = GL_FLOAT;
table->Table = MALLOC(comps * width * sizeof(GLfloat));
}
else {
table->Type = CHAN_TYPE;
table->Table = MALLOC(comps * width * sizeof(GLchan));
}
if (!table->Table) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glColorTable");
return;
}
store_colortable_entries(ctx, table,
0, width, /* start, count */
format, type, data,
rScale, rBias,
gScale, gBias,
bScale, bBias,
aScale, aBias);
}
} /* proxy */
if (texObj || target == GL_SHARED_TEXTURE_PALETTE_EXT) {
/* texture object palette, texObj==NULL means the shared palette */
if (ctx->Driver.UpdateTexturePalette) {
(*ctx->Driver.UpdateTexturePalette)( ctx, texObj );
}
}
ctx->NewState |= _NEW_PIXEL;
}
/**
* Called by glDrawBuffersARB; specifies the destination color renderbuffers
* for N fragment program color outputs.
* \sa _mesa_DrawBuffer
* \param n number of outputs
* \param buffers array [n] of renderbuffer names. Unlike glDrawBuffer, the
* names cannot specify more than one buffer. For example,
* GL_FRONT_AND_BACK is illegal.
*/
void GLAPIENTRY
_mesa_DrawBuffers(GLsizei n, const GLenum *buffers)
{
GLint output;
GLbitfield usedBufferMask, supportedMask;
GLbitfield destMask[MAX_DRAW_BUFFERS];
GET_CURRENT_CONTEXT(ctx);
FLUSH_VERTICES(ctx, 0);
/* Turns out n==0 is a valid input that should not produce an error.
* The remaining code below correctly handles the n==0 case.
*
* From the OpenGL 3.0 specification, page 258:
* "An INVALID_VALUE error is generated if n is greater than
* MAX_DRAW_BUFFERS."
*/
if (n < 0 || n > (GLsizei) ctx->Const.MaxDrawBuffers) {
_mesa_error(ctx, GL_INVALID_VALUE, "glDrawBuffersARB(n)");
return;
}
supportedMask = supported_buffer_bitmask(ctx, ctx->DrawBuffer);
usedBufferMask = 0x0;
/* From the ES 3.0 specification, page 180:
* "If the GL is bound to the default framebuffer, then n must be 1
* and the constant must be BACK or NONE."
*/
if (_mesa_is_gles3(ctx) && _mesa_is_winsys_fbo(ctx->DrawBuffer) &&
(n != 1 || (buffers[0] != GL_NONE && buffers[0] != GL_BACK))) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glDrawBuffers(buffer)");
return;
}
/* complicated error checking... */
for (output = 0; output < n; output++) {
if (buffers[output] == GL_NONE) {
destMask[output] = 0x0;
}
else {
/* Page 259 (page 275 of the PDF) in section 4.2.1 of the OpenGL 3.0
* spec (20080923) says:
*
* "If the GL is bound to a framebuffer object and DrawBuffers is
* supplied with [...] COLOR_ATTACHMENTm where m is greater than
* or equal to the value of MAX_COLOR_ATTACHMENTS, then the error
* INVALID_OPERATION results."
*/
if (_mesa_is_user_fbo(ctx->DrawBuffer) && buffers[output] >=
GL_COLOR_ATTACHMENT0 + ctx->Const.MaxDrawBuffers) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glDrawBuffersARB(buffer)");
return;
}
destMask[output] = draw_buffer_enum_to_bitmask(ctx, buffers[output]);
/* From the OpenGL 3.0 specification, page 258:
* "Each buffer listed in bufs must be one of the values from tables
* 4.5 or 4.6. Otherwise, an INVALID_ENUM error is generated.
*/
if (destMask[output] == BAD_MASK) {
_mesa_error(ctx, GL_INVALID_ENUM, "glDrawBuffersARB(buffer)");
return;
}
/* From the OpenGL 4.0 specification, page 256:
* "For both the default framebuffer and framebuffer objects, the
* constants FRONT, BACK, LEFT, RIGHT, and FRONT_AND_BACK are not
* valid in the bufs array passed to DrawBuffers, and will result in
* the error INVALID_ENUM. This restriction is because these
* constants may themselves refer to multiple buffers, as shown in
* table 4.4."
* Previous versions of the OpenGL specification say INVALID_OPERATION,
* but the Khronos conformance tests expect INVALID_ENUM.
*/
if (_mesa_bitcount(destMask[output]) > 1) {
_mesa_error(ctx, GL_INVALID_ENUM, "glDrawBuffersARB(buffer)");
return;
}
/* From the OpenGL 3.0 specification, page 259:
* "If the GL is bound to the default framebuffer and DrawBuffers is
* supplied with a constant (other than NONE) that does not indicate
* any of the color buffers allocated to the GL context by the window
* system, the error INVALID_OPERATION will be generated.
*
* If the GL is bound to a framebuffer object and DrawBuffers is
* supplied with a constant from table 4.6 [...] then the error
* INVALID_OPERATION results."
*/
destMask[output] &= supportedMask;
if (destMask[output] == 0) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glDrawBuffersARB(unsupported buffer)");
return;
}
/* ES 3.0 is even more restrictive. From the ES 3.0 spec, page 180:
* "If the GL is bound to a framebuffer object, the ith buffer listed
* in bufs must be COLOR_ATTACHMENTi or NONE. [...] INVALID_OPERATION."
*/
if (_mesa_is_gles3(ctx) && _mesa_is_user_fbo(ctx->DrawBuffer) &&
buffers[output] != GL_NONE &&
buffers[output] != GL_COLOR_ATTACHMENT0 + output) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glDrawBuffers(buffer)");
return;
}
/* From the OpenGL 3.0 specification, page 258:
* "Except for NONE, a buffer may not appear more than once in the
* array pointed to by bufs. Specifying a buffer more then once will
* result in the error INVALID_OPERATION."
*/
if (destMask[output] & usedBufferMask) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glDrawBuffersARB(duplicated buffer)");
return;
}
/* update bitmask */
usedBufferMask |= destMask[output];
}
}
/* OK, if we get here, there were no errors so set the new state */
_mesa_drawbuffers(ctx, n, buffers, destMask);
/*
* Call device driver function. Note that n can be equal to 0,
* in which case we don't want to reference buffers[0], which
* may not be valid.
*/
if (ctx->Driver.DrawBuffers)
ctx->Driver.DrawBuffers(ctx, n, buffers);
else if (ctx->Driver.DrawBuffer)
ctx->Driver.DrawBuffer(ctx, n > 0 ? buffers[0] : GL_NONE);
}
/**
* Helper function to set the GL_DRAW_BUFFER state in the context and
* current FBO. Called via glDrawBuffer(), glDrawBuffersARB()
*
* All error checking will have been done prior to calling this function
* so nothing should go wrong at this point.
*
* \param ctx current context
* \param n number of color outputs to set
* \param buffers array[n] of colorbuffer names, like GL_LEFT.
* \param destMask array[n] of BUFFER_BIT_* bitmasks which correspond to the
* colorbuffer names. (i.e. GL_FRONT_AND_BACK =>
* BUFFER_BIT_FRONT_LEFT | BUFFER_BIT_BACK_LEFT).
*/
void
_mesa_drawbuffers(struct gl_context *ctx, GLuint n, const GLenum *buffers,
const GLbitfield *destMask)
{
struct gl_framebuffer *fb = ctx->DrawBuffer;
GLbitfield mask[MAX_DRAW_BUFFERS];
GLuint buf;
if (!destMask) {
/* compute destMask values now */
const GLbitfield supportedMask = supported_buffer_bitmask(ctx, fb);
GLuint output;
for (output = 0; output < n; output++) {
mask[output] = draw_buffer_enum_to_bitmask(ctx, buffers[output]);
ASSERT(mask[output] != BAD_MASK);
mask[output] &= supportedMask;
}
destMask = mask;
}
/*
* destMask[0] may have up to four bits set
* (ex: glDrawBuffer(GL_FRONT_AND_BACK)).
* Otherwise, destMask[x] can only have one bit set.
*/
if (n > 0 && _mesa_bitcount(destMask[0]) > 1) {
GLuint count = 0, destMask0 = destMask[0];
while (destMask0) {
GLint bufIndex = ffs(destMask0) - 1;
if (fb->_ColorDrawBufferIndexes[count] != bufIndex) {
updated_drawbuffers(ctx);
fb->_ColorDrawBufferIndexes[count] = bufIndex;
}
count++;
destMask0 &= ~(1 << bufIndex);
}
fb->ColorDrawBuffer[0] = buffers[0];
fb->_NumColorDrawBuffers = count;
}
else {
GLuint count = 0;
for (buf = 0; buf < n; buf++ ) {
if (destMask[buf]) {
GLint bufIndex = ffs(destMask[buf]) - 1;
/* only one bit should be set in the destMask[buf] field */
ASSERT(_mesa_bitcount(destMask[buf]) == 1);
if (fb->_ColorDrawBufferIndexes[buf] != bufIndex) {
updated_drawbuffers(ctx);
fb->_ColorDrawBufferIndexes[buf] = bufIndex;
}
count = buf + 1;
}
else {
if (fb->_ColorDrawBufferIndexes[buf] != -1) {
updated_drawbuffers(ctx);
fb->_ColorDrawBufferIndexes[buf] = -1;
}
}
fb->ColorDrawBuffer[buf] = buffers[buf];
}
fb->_NumColorDrawBuffers = count;
}
/* set remaining outputs to -1 (GL_NONE) */
for (buf = fb->_NumColorDrawBuffers; buf < ctx->Const.MaxDrawBuffers; buf++) {
if (fb->_ColorDrawBufferIndexes[buf] != -1) {
updated_drawbuffers(ctx);
fb->_ColorDrawBufferIndexes[buf] = -1;
}
}
for (buf = n; buf < ctx->Const.MaxDrawBuffers; buf++) {
fb->ColorDrawBuffer[buf] = GL_NONE;
}
if (_mesa_is_winsys_fbo(fb)) {
/* also set context drawbuffer state */
for (buf = 0; buf < ctx->Const.MaxDrawBuffers; buf++) {
if (ctx->Color.DrawBuffer[buf] != fb->ColorDrawBuffer[buf]) {
updated_drawbuffers(ctx);
ctx->Color.DrawBuffer[buf] = fb->ColorDrawBuffer[buf];
}
}
}
}
void
_mesa_Histogram(GLenum target, GLsizei width, GLenum internalFormat, GLboolean sink)
{
GLuint i;
GLboolean error = GL_FALSE;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); /* sideeffects */
if (!ctx->Extensions.EXT_histogram && !ctx->Extensions.ARB_imaging) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glHistogram");
return;
}
if (target != GL_HISTOGRAM && target != GL_PROXY_HISTOGRAM) {
_mesa_error(ctx, GL_INVALID_ENUM, "glHistogram(target)");
return;
}
if (width < 0 || width > HISTOGRAM_TABLE_SIZE) {
if (target == GL_PROXY_HISTOGRAM) {
error = GL_TRUE;
}
else {
if (width < 0)
_mesa_error(ctx, GL_INVALID_VALUE, "glHistogram(width)");
else
_mesa_error(ctx, GL_TABLE_TOO_LARGE, "glHistogram(width)");
return;
}
}
if (width != 0 && _mesa_bitcount(width) != 1) {
if (target == GL_PROXY_HISTOGRAM) {
error = GL_TRUE;
}
else {
_mesa_error(ctx, GL_INVALID_VALUE, "glHistogram(width)");
return;
}
}
if (base_histogram_format(internalFormat) < 0) {
if (target == GL_PROXY_HISTOGRAM) {
error = GL_TRUE;
}
else {
_mesa_error(ctx, GL_INVALID_ENUM, "glHistogram(internalFormat)");
return;
}
}
/* reset histograms */
for (i = 0; i < HISTOGRAM_TABLE_SIZE; i++) {
ctx->Histogram.Count[i][0] = 0;
ctx->Histogram.Count[i][1] = 0;
ctx->Histogram.Count[i][2] = 0;
ctx->Histogram.Count[i][3] = 0;
}
if (error) {
ctx->Histogram.Width = 0;
ctx->Histogram.Format = 0;
ctx->Histogram.RedSize = 0;
ctx->Histogram.GreenSize = 0;
ctx->Histogram.BlueSize = 0;
ctx->Histogram.AlphaSize = 0;
ctx->Histogram.LuminanceSize = 0;
}
else {
ctx->Histogram.Width = width;
ctx->Histogram.Format = internalFormat;
ctx->Histogram.Sink = sink;
ctx->Histogram.RedSize = 8 * sizeof(GLuint);
ctx->Histogram.GreenSize = 8 * sizeof(GLuint);
ctx->Histogram.BlueSize = 8 * sizeof(GLuint);
ctx->Histogram.AlphaSize = 8 * sizeof(GLuint);
ctx->Histogram.LuminanceSize = 8 * sizeof(GLuint);
}
ctx->NewState |= _NEW_PIXEL;
}
