/*
* Mesa 3-D graphics library
- * Version: 6.5.3
*
* Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
*
* 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 NONINFRINGEMENT. IN NO EVENT SHALL
- * BRIAN PAUL 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.
+ * THE AUTHORS OR COPYRIGHT HOLDERS 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 "glheader.h"
-#include "context.h"
-#include "colormac.h"
-#include "context.h"
-#include "macros.h"
-#include "imports.h"
+#include "main/glheader.h"
+#include "main/context.h"
+#include "main/macros.h"
+#include "main/state.h"
#include "s_aatriangle.h"
#include "s_context.h"
#include "s_span.h"
* vertices and the given Z values.
* A point (x,y,z) lies on plane iff a*x+b*y+c*z+d = 0.
*/
-static INLINE void
+static inline void
compute_plane(const GLfloat v0[], const GLfloat v1[], const GLfloat v2[],
GLfloat z0, GLfloat z1, GLfloat z2, GLfloat plane[4])
{
/*
* Compute coefficients of a plane with a constant Z value.
*/
-static INLINE void
+static inline void
constant_plane(GLfloat value, GLfloat plane[4])
{
plane[0] = 0.0;
/*
* Solve plane equation for Z at (X,Y).
*/
-static INLINE GLfloat
+static inline GLfloat
solve_plane(GLfloat x, GLfloat y, const GLfloat plane[4])
{
- ASSERT(plane[2] != 0.0F);
+ assert(plane[2] != 0.0F);
return (plane[3] + plane[0] * x + plane[1] * y) / -plane[2];
}
((PLANE[3] + PLANE[0] * (X) + PLANE[1] * (Y)) / -PLANE[2])
-/*
- * Return 1 / solve_plane().
- */
-static INLINE GLfloat
-solve_plane_recip(GLfloat x, GLfloat y, const GLfloat plane[4])
-{
- const GLfloat denom = plane[3] + plane[0] * x + plane[1] * y;
- if (denom == 0.0F)
- return 0.0F;
- else
- return -plane[2] / denom;
-}
-
-
/*
* Solve plane and return clamped GLchan value.
*/
-static INLINE GLchan
+static inline GLchan
solve_plane_chan(GLfloat x, GLfloat y, const GLfloat plane[4])
{
const GLfloat z = (plane[3] + plane[0] * x + plane[1] * y) / -plane[2];
return 0;
else if (z > CHAN_MAX)
return CHAN_MAX;
- return (GLchan) IROUND_POS(z);
+ return (GLchan) lroundf(z);
#endif
}
-static INLINE GLfloat
+static inline GLfloat
plane_dx(const GLfloat plane[4])
{
return -plane[0] / plane[2];
}
-static INLINE GLfloat
+static inline GLfloat
plane_dy(const GLfloat plane[4])
{
return -plane[1] / plane[2];
GLint stop = 4, i;
GLfloat insideCount = 16.0F;
-#ifdef DEBUG
- {
- const GLfloat area = dx0 * dy1 - dx1 * dy0;
- ASSERT(area >= 0.0);
- }
-#endif
+ assert(dx0 * dy1 - dx1 * dy0 >= 0.0); /* area >= 0.0 */
for (i = 0; i < stop; i++) {
const GLfloat sx = x + samples[i][0];
-/*
- * Compute how much (area) of the given pixel is inside the triangle.
- * Vertices MUST be specified in counter-clockwise order.
- * Return: coverage in [0, 15].
- */
-static GLint
-compute_coveragei(const GLfloat v0[3], const GLfloat v1[3],
- const GLfloat v2[3], GLint winx, GLint winy)
-{
- /* NOTE: 15 samples instead of 16. */
- static const GLfloat samples[15][2] = {
- /* start with the four corners */
- { POS(0, 2), POS(0, 0) },
- { POS(3, 3), POS(0, 2) },
- { POS(0, 0), POS(3, 1) },
- { POS(3, 1), POS(3, 3) },
- /* continue with interior samples */
- { POS(1, 1), POS(0, 1) },
- { POS(2, 0), POS(0, 3) },
- { POS(0, 3), POS(1, 3) },
- { POS(1, 2), POS(1, 0) },
- { POS(2, 3), POS(1, 2) },
- { POS(3, 2), POS(1, 1) },
- { POS(0, 1), POS(2, 2) },
- { POS(1, 0), POS(2, 1) },
- { POS(2, 1), POS(2, 3) },
- { POS(3, 0), POS(2, 0) },
- { POS(1, 3), POS(3, 0) }
- };
- const GLfloat x = (GLfloat) winx;
- const GLfloat y = (GLfloat) winy;
- const GLfloat dx0 = v1[0] - v0[0];
- const GLfloat dy0 = v1[1] - v0[1];
- const GLfloat dx1 = v2[0] - v1[0];
- const GLfloat dy1 = v2[1] - v1[1];
- const GLfloat dx2 = v0[0] - v2[0];
- const GLfloat dy2 = v0[1] - v2[1];
- GLint stop = 4, i;
- GLint insideCount = 15;
-
-#ifdef DEBUG
- {
- const GLfloat area = dx0 * dy1 - dx1 * dy0;
- ASSERT(area >= 0.0);
- }
-#endif
-
- for (i = 0; i < stop; i++) {
- const GLfloat sx = x + samples[i][0];
- const GLfloat sy = y + samples[i][1];
- const GLfloat fx0 = sx - v0[0];
- const GLfloat fy0 = sy - v0[1];
- const GLfloat fx1 = sx - v1[0];
- const GLfloat fy1 = sy - v1[1];
- const GLfloat fx2 = sx - v2[0];
- const GLfloat fy2 = sy - v2[1];
- /* cross product determines if sample is inside or outside each edge */
- GLfloat cross0 = (dx0 * fy0 - dy0 * fx0);
- GLfloat cross1 = (dx1 * fy1 - dy1 * fx1);
- GLfloat cross2 = (dx2 * fy2 - dy2 * fx2);
- /* Check if the sample is exactly on an edge. If so, let cross be a
- * positive or negative value depending on the direction of the edge.
- */
- if (cross0 == 0.0F)
- cross0 = dx0 + dy0;
- if (cross1 == 0.0F)
- cross1 = dx1 + dy1;
- if (cross2 == 0.0F)
- cross2 = dx2 + dy2;
- if (cross0 < 0.0F || cross1 < 0.0F || cross2 < 0.0F) {
- /* point is outside triangle */
- insideCount--;
- stop = 15;
- }
- }
- if (stop == 4)
- return 15;
- else
- return insideCount;
-}
-
-
static void
-rgba_aa_tri(GLcontext *ctx,
+rgba_aa_tri(struct gl_context *ctx,
const SWvertex *v0,
const SWvertex *v1,
const SWvertex *v2)
{
#define DO_Z
-#define DO_RGBA
#include "s_aatritemp.h"
}
static void
-index_aa_tri(GLcontext *ctx,
- const SWvertex *v0,
- const SWvertex *v1,
- const SWvertex *v2)
-{
-#define DO_Z
-#define DO_ATTRIBS
-#define DO_INDEX
-#include "s_aatritemp.h"
-}
-
-
-static void
-general_aa_tri(GLcontext *ctx,
+general_aa_tri(struct gl_context *ctx,
const SWvertex *v0,
const SWvertex *v1,
const SWvertex *v2)
{
#define DO_Z
-#define DO_RGBA
#define DO_ATTRIBS
#include "s_aatritemp.h"
}
* appropriate antialiased triangle rasterizer function.
*/
void
-_swrast_set_aa_triangle_function(GLcontext *ctx)
+_swrast_set_aa_triangle_function(struct gl_context *ctx)
{
SWcontext *swrast = SWRAST_CONTEXT(ctx);
- ASSERT(ctx->Polygon.SmoothFlag);
+ assert(ctx->Polygon.SmoothFlag);
if (ctx->Texture._EnabledCoordUnits != 0
- || ctx->FragmentProgram._Current
+ || _swrast_use_fragment_program(ctx)
|| swrast->_FogEnabled
- || NEED_SECONDARY_COLOR(ctx)) {
+ || _mesa_need_secondary_color(ctx)) {
SWRAST_CONTEXT(ctx)->Triangle = general_aa_tri;
}
- else if (ctx->Visual.rgbMode) {
- SWRAST_CONTEXT(ctx)->Triangle = rgba_aa_tri;
- }
else {
- SWRAST_CONTEXT(ctx)->Triangle = index_aa_tri;
+ SWRAST_CONTEXT(ctx)->Triangle = rgba_aa_tri;
}
- ASSERT(SWRAST_CONTEXT(ctx)->Triangle);
+ assert(SWRAST_CONTEXT(ctx)->Triangle);
}
projects / mesa.git / blobdiff