triangle-rasterization(-overdraw): Fix indentation.

Pure white-space change.

2 files changed, 559 insertions, 556 deletions

diff --git a/tests/general/triangle-rasterization-overdraw.cpp b/tests/general/triangle-rasterization-overdraw.cpp
index 0a41e5850..58b67748f 100644
--- a/tests/general/triangle-rasterization-overdraw.cpp
+++ b/tests/general/triangle-rasterization-overdraw.cpp
@@ -51,16 +51,16 @@
 /* Data structures */
 struct Vector
 {
-   Vector()
-   {
-   }
+	Vector()
+	{
+	}
 
-   Vector(float x, float y)
-      : x(x), y(y)
-   {
-   }
+	Vector(float x, float y)
+		: x(x), y(y)
+	{
+	}
 
-   float x, y;
+	float x, y;
 };
 
 /* Command line arguments */
@@ -90,227 +90,227 @@ Mersenne mersenne;
 static inline float
 random_float(void)
 {
-   const int float_range = 1 << 23;
-   return (mersenne.value() % float_range) * (1.0 / float_range);
+	const int float_range = 1 << 23;
+	return (mersenne.value() % float_range) * (1.0 / float_range);
 }
 
 /* Random float from [a to b) */
 static inline float
 random_float(float a, float b)
 {
-   return a + (b - a - 1) * random_float();
+	return a + (b - a - 1) * random_float();
 }
 
 
 struct TestCase
 {
-   Vector mid;
-   std::vector<Vector> triangle_fan;
-
-   struct {
-      int x;
-      int y;
-      int w;
-      int h;
-   } probe_rect;
-
-   void generate(void);
-   bool run(void) const;
+	Vector mid;
+	std::vector<Vector> triangle_fan;
+
+	struct {
+		int x;
+		int y;
+		int w;
+		int h;
+	} probe_rect;
+
+	void generate(void);
+	bool run(void) const;
 };
 
 
 /* Generates a random triangle fan with a random origin, and contouring a rectangle or circle */
 void TestCase::generate(void)
 {
-   /* Random center point */
-   if (clips) {
-      mid.x = random_float(-0.5*piglit_width, 1.5*piglit_width);
-      mid.y = random_float(-0.5*piglit_height, 1.5*piglit_height);
-   } else {
-      mid.x = random_float(0, piglit_width);
-      mid.y = random_float(0, piglit_height);
-   }
-
-   if (clips) {
-      probe_rect.x = 0;
-      probe_rect.y = 0;
-      probe_rect.w = piglit_width;
-      probe_rect.h = piglit_height;
-   } else {
-      probe_rect.x = piglit_width/4;
-      probe_rect.y = piglit_height/4;
-      probe_rect.w = piglit_width/2;
-      probe_rect.h = piglit_height/2;
-   }
-
-   triangle_fan.clear();
-   triangle_fan.push_back(mid);
-
-   if (rect) {
-      /* Step around the window perimeter adding triangles */
-      double perimeter = probe_rect.w*2 + probe_rect.h*2;
-      double pos = 0.0;
-
-      while (pos < perimeter) {
-         Vector vertex;
-
-         if (pos < probe_rect.w) {
-            /* bottom */
-            vertex.x = probe_rect.x + pos;
-            vertex.y = probe_rect.y + 0.0f;
-         } else if (pos < probe_rect.w + probe_rect.h) {
-            /* right */
-            vertex.x = probe_rect.x + probe_rect.w;
-            vertex.y = probe_rect.y + pos - probe_rect.w;
-         } else if(pos < probe_rect.w*2 + probe_rect.h) {
-            /* top */
-            vertex.x = probe_rect.x + probe_rect.w - (pos - (probe_rect.w + probe_rect.h));
-            vertex.y = probe_rect.y + probe_rect.h;
-         } else {
-            /* left */
-            vertex.x = probe_rect.x + 0.0f;
-            vertex.y = probe_rect.y + probe_rect.h - (pos - (probe_rect.w*2 + probe_rect.h));
-         }
-
-         triangle_fan.push_back(vertex);
-         pos += random_float();
-      }
-   } else {
-      /* Step around a circle that contains the window */
-      double radius = (sqrt((double)(probe_rect.w*probe_rect.w + probe_rect.h*probe_rect.h)) / 2.0) + 5.0;
-      double perimeter = 2.0 * M_PI * radius;
-      double pos = 0.0;
-
-      while (pos < perimeter) {
-         double theta = pos / radius;
-
-         float x = probe_rect.x + 0.5 * probe_rect.w + cos(theta) * radius;
-         float y = probe_rect.y + 0.5 * probe_rect.h + sin(theta) * radius;
-
-         triangle_fan.push_back(Vector(x, y));
-         pos += random_float();
-      }
-   }
-
-   /* Complete the fan! */
-   triangle_fan.push_back(triangle_fan.at(1));
-   ++test_id;
+	/* Random center point */
+	if (clips) {
+		mid.x = random_float(-0.5*piglit_width, 1.5*piglit_width);
+		mid.y = random_float(-0.5*piglit_height, 1.5*piglit_height);
+	} else {
+		mid.x = random_float(0, piglit_width);
+		mid.y = random_float(0, piglit_height);
+	}
+
+	if (clips) {
+		probe_rect.x = 0;
+		probe_rect.y = 0;
+		probe_rect.w = piglit_width;
+		probe_rect.h = piglit_height;
+	} else {
+		probe_rect.x = piglit_width/4;
+		probe_rect.y = piglit_height/4;
+		probe_rect.w = piglit_width/2;
+		probe_rect.h = piglit_height/2;
+	}
+
+	triangle_fan.clear();
+	triangle_fan.push_back(mid);
+
+	if (rect) {
+		/* Step around the window perimeter adding triangles */
+		double perimeter = probe_rect.w*2 + probe_rect.h*2;
+		double pos = 0.0;
+
+		while (pos < perimeter) {
+			Vector vertex;
+
+			if (pos < probe_rect.w) {
+				/* bottom */
+				vertex.x = probe_rect.x + pos;
+				vertex.y = probe_rect.y + 0.0f;
+			} else if (pos < probe_rect.w + probe_rect.h) {
+				/* right */
+				vertex.x = probe_rect.x + probe_rect.w;
+				vertex.y = probe_rect.y + pos - probe_rect.w;
+			} else if(pos < probe_rect.w*2 + probe_rect.h) {
+				/* top */
+				vertex.x = probe_rect.x + probe_rect.w - (pos - (probe_rect.w + probe_rect.h));
+				vertex.y = probe_rect.y + probe_rect.h;
+			} else {
+				/* left */
+				vertex.x = probe_rect.x + 0.0f;
+				vertex.y = probe_rect.y + probe_rect.h - (pos - (probe_rect.w*2 + probe_rect.h));
+			}
+
+			triangle_fan.push_back(vertex);
+			pos += random_float();
+		}
+	} else {
+		/* Step around a circle that contains the window */
+		double radius = (sqrt((double)(probe_rect.w*probe_rect.w + probe_rect.h*probe_rect.h)) / 2.0) + 5.0;
+		double perimeter = 2.0 * M_PI * radius;
+		double pos = 0.0;
+
+		while (pos < perimeter) {
+			double theta = pos / radius;
+
+			float x = probe_rect.x + 0.5 * probe_rect.w + cos(theta) * radius;
+			float y = probe_rect.y + 0.5 * probe_rect.h + sin(theta) * radius;
+
+			triangle_fan.push_back(Vector(x, y));
+			pos += random_float();
+		}
+	}
+
+	/* Complete the fan! */
+	triangle_fan.push_back(triangle_fan.at(1));
+	++test_id;
 }
 
 /* Tests a triangle fan */
 bool TestCase::run(void) const
 {
-   glViewport(0, 0, piglit_width, piglit_height);
-   piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
-
-   /* Set render state */
-   float colour[4];
-   glEnable(GL_BLEND);
-   glBlendEquation(GL_FUNC_ADD);
-   if (rect) {
-      glBlendFunc(GL_ONE, GL_ONE);
-      colour[0] = colour[1] = colour[2] = 127.0f / 255.0f;
-   } else {
-      /* Invert.
-       *
-       * When contouring a circle with very small steps, some overdraw occurs
-       * naturally, but it should cancel itself out, i.e., there should be an
-       * odd number of overdraw inside the shape, and an even number outside.
-       * */
-      glBlendFunc(GL_ONE_MINUS_DST_COLOR, GL_ZERO);
-      colour[0] = colour[1] = colour[2] = 1.0f;
-   }
-
-   colour[3] = 1.0f;
-   glColor4fv(colour);
-
-   glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
-   glClear(GL_COLOR_BUFFER_BIT);
-
-   /* Draw triangle fan */
-   glEnableClientState(GL_VERTEX_ARRAY);
-   glVertexPointer(2, GL_FLOAT, 0, &triangle_fan.front());
-   glDrawArrays(GL_TRIANGLE_FAN, 0, triangle_fan.size());
-   glDisableClientState(GL_VERTEX_ARRAY);
-
-   /* Reset draw state */
-   glDisable(GL_BLEND);
-
-   if (!piglit_probe_rect_rgb(probe_rect.x, probe_rect.y, probe_rect.w, probe_rect.y, colour)) {
-      printf("%d. Triangle Fan with %d triangles around (%f, %f)\n",
-             test_id, (int)triangle_fan.size(), mid.x, mid.y);
-
-      fflush(stdout);
-      return false;
-   }
-
-   return true;
+	glViewport(0, 0, piglit_width, piglit_height);
+	piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
+
+	/* Set render state */
+	float colour[4];
+	glEnable(GL_BLEND);
+	glBlendEquation(GL_FUNC_ADD);
+	if (rect) {
+		glBlendFunc(GL_ONE, GL_ONE);
+		colour[0] = colour[1] = colour[2] = 127.0f / 255.0f;
+	} else {
+		/* Invert.
+		 *
+		 * When contouring a circle with very small steps, some overdraw occurs
+		 * naturally, but it should cancel itself out, i.e., there should be an
+		 * odd number of overdraw inside the shape, and an even number outside.
+		 * */
+		glBlendFunc(GL_ONE_MINUS_DST_COLOR, GL_ZERO);
+		colour[0] = colour[1] = colour[2] = 1.0f;
+	}
+
+	colour[3] = 1.0f;
+	glColor4fv(colour);
+
+	glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
+	glClear(GL_COLOR_BUFFER_BIT);
+
+	/* Draw triangle fan */
+	glEnableClientState(GL_VERTEX_ARRAY);
+	glVertexPointer(2, GL_FLOAT, 0, &triangle_fan.front());
+	glDrawArrays(GL_TRIANGLE_FAN, 0, triangle_fan.size());
+	glDisableClientState(GL_VERTEX_ARRAY);
+
+	/* Reset draw state */
+	glDisable(GL_BLEND);
+
+	if (!piglit_probe_rect_rgb(probe_rect.x, probe_rect.y, probe_rect.w, probe_rect.y, colour)) {
+		printf("%d. Triangle Fan with %d triangles around (%f, %f)\n",
+		       test_id, (int)triangle_fan.size(), mid.x, mid.y);
+
+		fflush(stdout);
+		return false;
+	}
+
+	return true;
 }
 
 /* Render */
 enum piglit_result
 piglit_display(void)
 {
-   /* Perform test */
-   GLboolean pass = GL_TRUE;
+	/* Perform test */
+	GLboolean pass = GL_TRUE;
 
-   TestCase test_case;
+	TestCase test_case;
 
-   if (piglit_automatic) {
-      int fail_count = 0;
+	if (piglit_automatic) {
+		int fail_count = 0;
 
-      printf("Running %d random tests\n", random_test_count);
-      fflush(stdout);
+		printf("Running %d random tests\n", random_test_count);
+		fflush(stdout);
 
-      for (int i = 0; i < random_test_count && !(fail_count && break_on_fail); ++i) {
-         test_case.generate();
-         if (!test_case.run())
-            fail_count++;
-      }
+		for (int i = 0; i < random_test_count && !(fail_count && break_on_fail); ++i) {
+			test_case.generate();
+			if (!test_case.run())
+				fail_count++;
+		}
 
-      printf("Failed %d random tests\n", fail_count);
-      fflush(stdout);
+		printf("Failed %d random tests\n", fail_count);
+		fflush(stdout);
 
-      if (fail_count)
-         pass = GL_FALSE;
-   } else {
-      test_case.generate();
-      pass = pass && test_case.run();
+		if (fail_count)
+			pass = GL_FALSE;
+	} else {
+		test_case.generate();
+		pass = pass && test_case.run();
 
-      piglit_present_results();
-   }
+		piglit_present_results();
+	}
 
-   assert(glGetError() == 0);
-   return pass ? PIGLIT_PASS : PIGLIT_FAIL;
+	assert(glGetError() == 0);
+	return pass ? PIGLIT_PASS : PIGLIT_FAIL;
 }
 
 /* Read command line arguments! */
 void
 piglit_init(int argc, char **argv)
 {
-   uint32_t seed = 0xfacebeef ^ time(NULL);
-
-   for (int i = 1; i < argc; ++i) {
-      if (strcmp(argv[i], "-break_on_fail") == 0){
-         break_on_fail = true;
-         printf("Execution will stop on first fail\n");
-      } else if (strcmp(argv[i], "-rect") == 0){
-         rect = true;
-      } else if (strcmp(argv[i], "-max_size") == 0){
-         glGetIntegerv(GL_MAX_TEXTURE_SIZE, &piglit_width);
-         piglit_height = piglit_width;
-      } else if (strcmp(argv[i], "-clip") == 0){
-         clips = true;
-         printf("Clipped triangles are being tested\n");
-      } else if (i + 1 < argc) {
-         if (strcmp(argv[i], "-count") == 0) {
-            random_test_count = strtoul(argv[++i], NULL, 0);
-         } else if (strcmp(argv[i], "-seed") == 0) {
-            seed = strtoul(argv[++i], NULL, 0);
-         }
-      }
-   }
-
-   printf("Random seed: 0x%08X\n", seed);
-   mersenne.init(seed);
+	uint32_t seed = 0xfacebeef ^ time(NULL);
+
+	for (int i = 1; i < argc; ++i) {
+		if (strcmp(argv[i], "-break_on_fail") == 0){
+			break_on_fail = true;
+			printf("Execution will stop on first fail\n");
+		} else if (strcmp(argv[i], "-rect") == 0){
+			rect = true;
+		} else if (strcmp(argv[i], "-max_size") == 0){
+			glGetIntegerv(GL_MAX_TEXTURE_SIZE, &piglit_width);
+			piglit_height = piglit_width;
+		} else if (strcmp(argv[i], "-clip") == 0){
+			clips = true;
+			printf("Clipped triangles are being tested\n");
+		} else if (i + 1 < argc) {
+			if (strcmp(argv[i], "-count") == 0) {
+				random_test_count = strtoul(argv[++i], NULL, 0);
+			} else if (strcmp(argv[i], "-seed") == 0) {
+				seed = strtoul(argv[++i], NULL, 0);
+			}
+		}
+	}
+
+	printf("Random seed: 0x%08X\n", seed);
+	mersenne.init(seed);
 }
diff --git a/tests/general/triangle-rasterization.cpp b/tests/general/triangle-rasterization.cpp
index 78b5b73b0..5dc02567a 100644
--- a/tests/general/triangle-rasterization.cpp
+++ b/tests/general/triangle-rasterization.cpp
@@ -45,41 +45,41 @@
 /* Data structures */
 struct Vector
 {
-   Vector()
-   {
-   }
+	Vector()
+	{
+	}
 
-   Vector(float x, float y)
-      : x(x), y(y)
-   {
-   }
+	Vector(float x, float y)
+		: x(x), y(y)
+	{
+	}
 
-   float x, y;
+	float x, y;
 };
 
 struct Triangle {
-   Triangle()
-   {
-   }
-
-   Triangle(const Vector& v0, const Vector& v1, const Vector& v2)
-   {
-      v[0] = v0;
-      v[1] = v1;
-      v[2] = v2;
-   }
-
-   Vector& operator[](int i)
-   {
-      return v[i];
-   }
-
-   const Vector& operator[](int i) const
-   {
-      return v[i];
-   }
-
-   Vector v[3];
+	Triangle()
+	{
+	}
+
+	Triangle(const Vector& v0, const Vector& v1, const Vector& v2)
+	{
+		v[0] = v0;
+		v[1] = v1;
+		v[2] = v2;
+	}
+
+	Vector& operator[](int i)
+	{
+		return v[i];
+	}
+
+	const Vector& operator[](int i) const
+	{
+		return v[i];
+	}
+
+	Vector v[3];
 };
 
 
@@ -117,175 +117,178 @@ std::vector<Triangle> fixed_tests;
 
 /* std::algorithm min/max with 3 arguments! :D */
 namespace std {
-   template<typename T>
-   T min(T& a, T& b, T& c)
-   {
-      return (a < b) ? std::min(a, c) : std::min(b, c);
-   }
-
-   template<typename T>
-   T max(T& a, T& b, T& c)
-   {
-      return (a > b) ? std::max(a, c) : std::max(b, c);
-   }
+	template<typename T>
+	T min(T& a, T& b, T& c)
+	{
+		return (a < b) ? std::min(a, c) : std::min(b, c);
+	}
+
+	template<typename T>
+	T max(T& a, T& b, T& c)
+	{
+		return (a > b) ? std::max(a, c) : std::max(b, c);
+	}
 }
 
 /* Proper rounding of float to integer */
 int iround(float v)
 {
-   if (v > 0.0f) v += 0.5f;
-   if (v < 0.0f) v -= 0.5f;
-   return (int)v;
+	if (v > 0.0f)
+		v += 0.5f;
+	if (v < 0.0f)
+		v -= 0.5f;
+	return (int)v;
 }
 
 /* Calculate log2 for integers */
 int log2i(int x)
 {
-   int res = 0 ;
-   while (x >>= 1) ++res;
-   return res ;
+	int res = 0 ;
+	while (x >>= 1)
+		++res;
+	return res ;
 }
 
 
 /* Based on http://devmaster.net/forums/topic/1145-advanced-rasterization */
 void rast_triangle(uint8_t* buffer, uint32_t stride, const Triangle& tri)
 {
-   float center_offset = -0.5f;
-
-   /* 28.4 fixed point coordinates */
-   int x1 = iround(FIXED_ONE * (tri[0].x + center_offset));
-   int x2 = iround(FIXED_ONE * (tri[1].x + center_offset));
-   int x3 = iround(FIXED_ONE * (tri[2].x + center_offset));
-
-   int y1 = iround(FIXED_ONE * (tri[0].y + center_offset));
-   int y2 = iround(FIXED_ONE * (tri[1].y + center_offset));
-   int y3 = iround(FIXED_ONE * (tri[2].y + center_offset));
-
-   /* Force correct vertex order */
-   const int cross = (x2 - x1) * (y3 - y2) - (y2 - y1) * (x3 - x2);
-   if (cross > 0) {
-      std::swap(x1, x3);
-      std::swap(y1, y3);
-   }
-
-   /* Deltas */
-   const int dx12 = x1 - x2;
-   const int dx23 = x2 - x3;
-   const int dx31 = x3 - x1;
-
-   const int dy12 = y1 - y2;
-   const int dy23 = y2 - y3;
-   const int dy31 = y3 - y1;
-
-   /* Fixed-point deltas */
-   const int fdx12 = dx12 << FIXED_SHIFT;
-   const int fdx23 = dx23 << FIXED_SHIFT;
-   const int fdx31 = dx31 << FIXED_SHIFT;
-
-   const int fdy12 = dy12 << FIXED_SHIFT;
-   const int fdy23 = dy23 << FIXED_SHIFT;
-   const int fdy31 = dy31 << FIXED_SHIFT;
-
-   /* Bounding rectangle */
-   int minx = std::min(x1, x2, x3) >> FIXED_SHIFT;
-   int maxx = (std::max(x1, x2, x3) - 1) >> FIXED_SHIFT;
-
-   int miny = (std::min(y1, y2, y3) + 1) >> FIXED_SHIFT;
-   int maxy = std::max(y1, y2, y3) >> FIXED_SHIFT;
-
-   minx = std::max(minx, 0);
-   maxx = std::min(maxx, fbo_width - 1);
-
-   miny = std::max(miny, 0);
-   maxy = std::min(maxy, fbo_height - 1);
-
-   /* Half-edge constants */
-   int c1 = dy12 * x1 - dx12 * y1;
-   int c2 = dy23 * x2 - dx23 * y2;
-   int c3 = dy31 * x3 - dx31 * y3;
-
-   /* Correct for fill convention */
-   if (dy12 < 0 || (dy12 == 0 && dx12 > 0)) c1++;
-   if (dy23 < 0 || (dy23 == 0 && dx23 > 0)) c2++;
-   if (dy31 < 0 || (dy31 == 0 && dx31 > 0)) c3++;
-
-   int cy1 = c1 + dx12 * (miny << FIXED_SHIFT) - dy12 * (minx << FIXED_SHIFT);
-   int cy2 = c2 + dx23 * (miny << FIXED_SHIFT) - dy23 * (minx << FIXED_SHIFT);
-   int cy3 = c3 + dx31 * (miny << FIXED_SHIFT) - dy31 * (minx << FIXED_SHIFT);
-
-   /* Perform rasterization */
-   buffer += miny * stride;
-   for (int y = miny; y <= maxy; y++) {
-      int cx1 = cy1;
-      int cx2 = cy2;
-      int cx3 = cy3;
-
-      for (int x = minx; x <= maxx; x++) {
-         if (cx1 > 0 && cx2 > 0 && cx3 > 0) {
-            ((uint32_t*)buffer)[x] = 0x00FF00FF;
-         }
-
-         cx1 -= fdy12;
-         cx2 -= fdy23;
-         cx3 -= fdy31;
-      }
-
-      cy1 += fdx12;
-      cy2 += fdx23;
-      cy3 += fdx31;
-
-      buffer += stride;
-   }
+	float center_offset = -0.5f;
+
+	/* 28.4 fixed point coordinates */
+	int x1 = iround(FIXED_ONE * (tri[0].x + center_offset));
+	int x2 = iround(FIXED_ONE * (tri[1].x + center_offset));
+	int x3 = iround(FIXED_ONE * (tri[2].x + center_offset));
+
+	int y1 = iround(FIXED_ONE * (tri[0].y + center_offset));
+	int y2 = iround(FIXED_ONE * (tri[1].y + center_offset));
+	int y3 = iround(FIXED_ONE * (tri[2].y + center_offset));
+
+	/* Force correct vertex order */
+	const int cross = (x2 - x1) * (y3 - y2) - (y2 - y1) * (x3 - x2);
+	if (cross > 0) {
+		std::swap(x1, x3);
+		std::swap(y1, y3);
+	}
+
+	/* Deltas */
+	const int dx12 = x1 - x2;
+	const int dx23 = x2 - x3;
+	const int dx31 = x3 - x1;
+
+	const int dy12 = y1 - y2;
+	const int dy23 = y2 - y3;
+	const int dy31 = y3 - y1;
+
+	/* Fixed-point deltas */
+	const int fdx12 = dx12 << FIXED_SHIFT;
+	const int fdx23 = dx23 << FIXED_SHIFT;
+	const int fdx31 = dx31 << FIXED_SHIFT;
+
+	const int fdy12 = dy12 << FIXED_SHIFT;
+	const int fdy23 = dy23 << FIXED_SHIFT;
+	const int fdy31 = dy31 << FIXED_SHIFT;
+
+	/* Bounding rectangle */
+	int minx = std::min(x1, x2, x3) >> FIXED_SHIFT;
+	int maxx = (std::max(x1, x2, x3) - 1) >> FIXED_SHIFT;
+
+	int miny = (std::min(y1, y2, y3) + 1) >> FIXED_SHIFT;
+	int maxy = std::max(y1, y2, y3) >> FIXED_SHIFT;
+
+	minx = std::max(minx, 0);
+	maxx = std::min(maxx, fbo_width - 1);
+
+	miny = std::max(miny, 0);
+	maxy = std::min(maxy, fbo_height - 1);
+
+	/* Half-edge constants */
+	int c1 = dy12 * x1 - dx12 * y1;
+	int c2 = dy23 * x2 - dx23 * y2;
+	int c3 = dy31 * x3 - dx31 * y3;
+
+	/* Correct for fill convention */
+	if (dy12 < 0 || (dy12 == 0 && dx12 > 0)) c1++;
+	if (dy23 < 0 || (dy23 == 0 && dx23 > 0)) c2++;
+	if (dy31 < 0 || (dy31 == 0 && dx31 > 0)) c3++;
+
+	int cy1 = c1 + dx12 * (miny << FIXED_SHIFT) - dy12 * (minx << FIXED_SHIFT);
+	int cy2 = c2 + dx23 * (miny << FIXED_SHIFT) - dy23 * (minx << FIXED_SHIFT);
+	int cy3 = c3 + dx31 * (miny << FIXED_SHIFT) - dy31 * (minx << FIXED_SHIFT);
+
+	/* Perform rasterization */
+	buffer += miny * stride;
+	for (int y = miny; y <= maxy; y++) {
+		int cx1 = cy1;
+		int cx2 = cy2;
+		int cx3 = cy3;
+
+		for (int x = minx; x <= maxx; x++) {
+			if (cx1 > 0 && cx2 > 0 && cx3 > 0) {
+				((uint32_t*)buffer)[x] = 0x00FF00FF;
+			}
+
+			cx1 -= fdy12;
+			cx2 -= fdy23;
+			cx3 -= fdy31;
+		}
+
+		cy1 += fdx12;
+		cy2 += fdx23;
+		cy3 += fdx31;
+
+		buffer += stride;
+	}
 }
 
 
 /* Prints an ascii representation of the triangle */
 void triangle_art(uint32_t* buffer)
 {
-   int minx = fbo_width - 1, miny = fbo_height - 1;
-   int maxx = 0, maxy = 0;
-
-   /* Find bounds so we dont have to print whole screen */
-   for (int y = 0; y < fbo_height; ++y) {
-      for (int x = 0; x < fbo_width; ++x) {
-         if (buffer[y*fbo_width + x] & 0xFFFFFF00) {
-            if (x < minx) minx = x;
-            if (y < miny) miny = y;
-            if (x > maxx) maxx = x;
-            if (y > maxy) maxy = y;
-         }
-      }
-   }
-
-   /* Nothing drawn */
-   if (minx > maxx || miny > maxy)
-      return;
-
-   --minx; --miny;
-   ++maxx; ++maxy;
-
-   /* Print an ascii representation of triangle */
-   for (int y = maxy; y >= miny; --y) {
-      for (int x = minx; x <= maxx; ++x) {
-         uint32_t val = buffer[y*fbo_width + x] & 0xFFFFFF00;
-
-         if (val == 0xFF000000) {
-            printf("+");
-         } else if (val == 0x00FF0000) {
-            printf("-");
-         } else if (val == 0xFFFF0000) {
-            printf("o");
-         } else if (val == 0) {
-            printf(".");
-         } else {
-            printf("?");
-         }
-      }
-
-      printf("\n");
-   }
-
-   printf("\n");
+	int minx = fbo_width - 1, miny = fbo_height - 1;
+	int maxx = 0, maxy = 0;
+
+	/* Find bounds so we dont have to print whole screen */
+	for (int y = 0; y < fbo_height; ++y) {
+		for (int x = 0; x < fbo_width; ++x) {
+			if (buffer[y*fbo_width + x] & 0xFFFFFF00) {
+				if (x < minx) minx = x;
+				if (y < miny) miny = y;
+				if (x > maxx) maxx = x;
+				if (y > maxy) maxy = y;
+			}
+		}
+	}
+
+	/* Nothing drawn */
+	if (minx > maxx || miny > maxy)
+		return;
+
+	--minx; --miny;
+	++maxx; ++maxy;
+
+	/* Print an ascii representation of triangle */
+	for (int y = maxy; y >= miny; --y) {
+		for (int x = minx; x <= maxx; ++x) {
+			uint32_t val = buffer[y*fbo_width + x] & 0xFFFFFF00;
+
+			if (val == 0xFF000000) {
+				printf("+");
+			} else if (val == 0x00FF0000) {
+				printf("-");
+			} else if (val == 0xFFFF0000) {
+				printf("o");
+			} else if (val == 0) {
+				printf(".");
+			} else {
+				printf("?");
+			}
+		}
+
+		printf("\n");
+	}
+
+	printf("\n");
 }
 
 
@@ -294,73 +297,73 @@ void triangle_art(uint32_t* buffer)
  */
 uint32_t* check_triangle()
 {
-   static uint32_t* buffer = 0;
-   if (!buffer) buffer = new uint32_t[fbo_width * fbo_height];
+	static uint32_t* buffer = 0;
+	if (!buffer) buffer = new uint32_t[fbo_width * fbo_height];
 
-   glReadPixels(0, 0, fbo_width, fbo_height, GL_RGBA, GL_UNSIGNED_INT_8_8_8_8, buffer);
+	glReadPixels(0, 0, fbo_width, fbo_height, GL_RGBA, GL_UNSIGNED_INT_8_8_8_8, buffer);
 
-   for (int y = 0; y < fbo_height; ++y) {
-      for (int x = 0; x < fbo_width; ++x) {
-         uint32_t val = buffer[y*fbo_width + x] & 0xFFFFFF00;
+	for (int y = 0; y < fbo_height; ++y) {
+		for (int x = 0; x < fbo_width; ++x) {
+			uint32_t val = buffer[y*fbo_width + x] & 0xFFFFFF00;
 
-         if (val != 0 && val != 0xFFFF0000) {
-            return buffer;
-         }
-      }
-   }
+			if (val != 0 && val != 0xFFFF0000) {
+				return buffer;
+			}
+		}
+	}
 
-   return NULL;
+	return NULL;
 }
 
 
 /* Performs test using tri */
 GLboolean test_triangle(const Triangle& tri)
 {
-   static uint32_t* buffer = 0;
-   if (!buffer) buffer = new uint32_t[fbo_width * fbo_height];
+	static uint32_t* buffer = 0;
+	if (!buffer) buffer = new uint32_t[fbo_width * fbo_height];
 
-   /* Clear OpenGL and software buffer */
-   glClear(GL_COLOR_BUFFER_BIT);
-   memset(buffer, 0, sizeof(uint32_t) * fbo_width * fbo_height);
+	/* Clear OpenGL and software buffer */
+	glClear(GL_COLOR_BUFFER_BIT);
+	memset(buffer, 0, sizeof(uint32_t) * fbo_width * fbo_height);
 
-   /* Software rasterise triangle and blit it to OpenGL */
-   rast_triangle((uint8_t*)buffer, fbo_width * 4, tri);
-   glDrawPixels(fbo_width, fbo_height, GL_RGBA, GL_UNSIGNED_INT_8_8_8_8, buffer);
+	/* Software rasterise triangle and blit it to OpenGL */
+	rast_triangle((uint8_t*)buffer, fbo_width * 4, tri);
+	glDrawPixels(fbo_width, fbo_height, GL_RGBA, GL_UNSIGNED_INT_8_8_8_8, buffer);
 
-   /* Draw OpenGL triangle */
-   glEnableClientState(GL_VERTEX_ARRAY);
-   glVertexPointer(2, GL_FLOAT, 0, tri.v);
-   glDrawArrays(GL_TRIANGLES, 0, 3);
-   glDisableClientState(GL_VERTEX_ARRAY);
+	/* Draw OpenGL triangle */
+	glEnableClientState(GL_VERTEX_ARRAY);
+	glVertexPointer(2, GL_FLOAT, 0, tri.v);
+	glDrawArrays(GL_TRIANGLES, 0, 3);
+	glDisableClientState(GL_VERTEX_ARRAY);
 
-   /* Check the result and print relevant error messages */
-   if (uint32_t* result = check_triangle()) {
-      printf("FAIL: %d. (%f, %f), (%f, %f), (%f, %f)\n", test_id,
-             tri[0].x, tri[0].y, tri[1].x, tri[1].y, tri[2].x, tri[2].y);
+	/* Check the result and print relevant error messages */
+	if (uint32_t* result = check_triangle()) {
+		printf("FAIL: %d. (%f, %f), (%f, %f), (%f, %f)\n", test_id,
+		       tri[0].x, tri[0].y, tri[1].x, tri[1].y, tri[2].x, tri[2].y);
 
-      if (print_triangle) {
-         triangle_art(result);
-      }
+		if (print_triangle) {
+			triangle_art(result);
+		}
 
-      fflush(stdout);
-      return GL_FALSE;
-   }
+		fflush(stdout);
+		return GL_FALSE;
+	}
 
-   return GL_TRUE;
+	return GL_TRUE;
 }
 
 
 /* Generate a random triangle */
 void random_triangle(Triangle& tri)
 {
-   int size = 1 << (mersenne.value() % (log2i(fbo_width) + 1));
+	int size = 1 << (mersenne.value() % (log2i(fbo_width) + 1));
 
-   for (int i = 0; i < 3; ++i) {
-      tri[i].x = (mersenne.value() % (size * FIXED_ONE)) * (1.0f / FIXED_ONE);
-      tri[i].y = (mersenne.value() % (size * FIXED_ONE)) * (1.0f / FIXED_ONE);
-   }
+	for (int i = 0; i < 3; ++i) {
+		tri[i].x = (mersenne.value() % (size * FIXED_ONE)) * (1.0f / FIXED_ONE);
+		tri[i].y = (mersenne.value() % (size * FIXED_ONE)) * (1.0f / FIXED_ONE);
+	}
 
-   test_id++;
+	test_id++;
 }
 
 
@@ -368,109 +371,109 @@ void random_triangle(Triangle& tri)
 enum piglit_result
 piglit_display(void)
 {
-   GLuint fb, tex;
+	GLuint fb, tex;
 
-   /* If using FBO, set it up */
-   if (use_fbo) {
-      glDisable(GL_CULL_FACE);
+	/* If using FBO, set it up */
+	if (use_fbo) {
+		glDisable(GL_CULL_FACE);
 
-      glGenTextures(1, &tex);
-      glBindTexture(GL_TEXTURE_2D, tex);
-      glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
-      glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
-      glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, fbo_width, fbo_height, 0, GL_BGRA, GL_UNSIGNED_BYTE, NULL);
+		glGenTextures(1, &tex);
+		glBindTexture(GL_TEXTURE_2D, tex);
+		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+		glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, fbo_width, fbo_height, 0, GL_BGRA, GL_UNSIGNED_BYTE, NULL);
 
-      glGenFramebuffersEXT(1, &fb);
-      glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fb);
-      glViewport(0, 0, fbo_width, fbo_height);
+		glGenFramebuffersEXT(1, &fb);
+		glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fb);
+		glViewport(0, 0, fbo_width, fbo_height);
 
-      glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT,
-                 GL_COLOR_ATTACHMENT0_EXT,
-                 GL_TEXTURE_2D,
-                 tex,
-                 0);
+		glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT,
+					  GL_COLOR_ATTACHMENT0_EXT,
+					  GL_TEXTURE_2D,
+					  tex,
+					  0);
 
-      assert(glGetError() == 0);
-      assert(glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT) == GL_FRAMEBUFFER_COMPLETE_EXT);
+		assert(glGetError() == 0);
+		assert(glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT) == GL_FRAMEBUFFER_COMPLETE_EXT);
 
-      glBindTexture(GL_TEXTURE_2D, 0);
-   }
+		glBindTexture(GL_TEXTURE_2D, 0);
+	}
 
-   /* Set render state */
-   glColor4f(1.0f, 0.0f, 0.0f, 1.0f);
-   glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
+	/* Set render state */
+	glColor4f(1.0f, 0.0f, 0.0f, 1.0f);
+	glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
 
-   glEnable(GL_BLEND);
-   glBlendEquation(GL_FUNC_ADD);
-   glBlendFunc(GL_ONE, GL_ONE);
+	glEnable(GL_BLEND);
+	glBlendEquation(GL_FUNC_ADD);
+	glBlendFunc(GL_ONE, GL_ONE);
 
-   glViewport(0, 0, fbo_width, fbo_height);
-   piglit_ortho_projection(fbo_width, fbo_height, GL_FALSE);
+	glViewport(0, 0, fbo_width, fbo_height);
+	piglit_ortho_projection(fbo_width, fbo_height, GL_FALSE);
 
-   /* Perform test */
-   GLboolean pass = GL_TRUE;
-   if (piglit_automatic) {
-      int fail_count = 0;
+	/* Perform test */
+	GLboolean pass = GL_TRUE;
+	if (piglit_automatic) {
+		int fail_count = 0;
 
-      printf("Running %d fixed tests\n", (int)fixed_tests.size());
-      for (std::vector<Triangle>::iterator itr = fixed_tests.begin(); itr != fixed_tests.end() && !(fail_count && break_on_fail); ++itr) {
-         if (!test_triangle(*itr))
-            ++fail_count;
-      }
+		printf("Running %d fixed tests\n", (int)fixed_tests.size());
+		for (std::vector<Triangle>::iterator itr = fixed_tests.begin(); itr != fixed_tests.end() && !(fail_count && break_on_fail); ++itr) {
+			if (!test_triangle(*itr))
+				++fail_count;
+		}
 
-      printf("Running %d random tests\n", random_test_count);
-      for (int i = 0; i < random_test_count && !(fail_count && break_on_fail); ++i) {
-         Triangle tri;
-         random_triangle(tri);
+		printf("Running %d random tests\n", random_test_count);
+		for (int i = 0; i < random_test_count && !(fail_count && break_on_fail); ++i) {
+			Triangle tri;
+			random_triangle(tri);
 
-         if (!test_triangle(tri))
-            ++fail_count;
-      }
+			if (!test_triangle(tri))
+				++fail_count;
+		}
 
-      printf("Failed %d tests\n", fail_count);
-      fflush(stdout);
+		printf("Failed %d tests\n", fail_count);
+		fflush(stdout);
 
-      if (fail_count)
-         pass = GL_FALSE;
-   } else {
-      Triangle tri;
-      random_triangle(tri);
-      pass &= test_triangle(tri);
+		if (fail_count)
+			pass = GL_FALSE;
+	} else {
+		Triangle tri;
+		random_triangle(tri);
+		pass &= test_triangle(tri);
 
-      glDisable(GL_BLEND);
+		glDisable(GL_BLEND);
 
-      /* If using FBO, draw the fbo to screen */
-      if (use_fbo) {
-         glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
-         glViewport(0, 0, piglit_width, piglit_height);
-         piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
+		/* If using FBO, draw the fbo to screen */
+		if (use_fbo) {
+			glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
+			glViewport(0, 0, piglit_width, piglit_height);
+			piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
 
-         glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
-         glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB,   GL_REPLACE);
-         glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA, GL_REPLACE);
+			glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
+			glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB, GL_REPLACE);
+			glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA, GL_REPLACE);
 
-         glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
-         glEnable(GL_TEXTURE_2D);
-         glBindTexture(GL_TEXTURE_2D, tex);
+			glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
+			glEnable(GL_TEXTURE_2D);
+			glBindTexture(GL_TEXTURE_2D, tex);
 
-         piglit_draw_rect_tex(0, 0, piglit_width, piglit_height, 0, 0, 1, 1);
+			piglit_draw_rect_tex(0, 0, piglit_width, piglit_height, 0, 0, 1, 1);
 
-         glDisable(GL_TEXTURE_2D);
-      }
+			glDisable(GL_TEXTURE_2D);
+		}
 
-      piglit_present_results();
-   }
+		piglit_present_results();
+	}
 
-   /* Cleanup FBO if necessary */
-   if (use_fbo) {
-      glDeleteTextures(1, &tex);
-      glDeleteFramebuffersEXT(1, &fb);
-      glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
-   }
+	/* Cleanup FBO if necessary */
+	if (use_fbo) {
+		glDeleteTextures(1, &tex);
+		glDeleteFramebuffersEXT(1, &fb);
+		glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
+	}
 
-   assert(glGetError() == 0);
+	assert(glGetError() == 0);
 
-   return pass ? PIGLIT_PASS : PIGLIT_FAIL;
+	return pass ? PIGLIT_PASS : PIGLIT_FAIL;
 }
 
 
@@ -483,46 +486,46 @@ piglit_display(void)
  */
 void init_fixed_tests()
 {
-   const float mid = 0.5f;
-   const float shift = 1.0f / FIXED_ONE;
-   const float size  = 3.0f / FIXED_ONE;
-
-   Vector vv[] = {
-      Vector(mid, mid + size),
-      Vector(mid, mid - size),
-   };
-
-   Vector vh[] = {
-      Vector(mid - size, mid),
-      Vector(mid + size, mid),
-   };
-
-   Vector vm(mid, mid);
-
-   /* Loop through the 4 possible triangles */
-   for (int vy = 0; vy < 2; ++vy) {
-      for (int vx = 0; vx < 2; ++vx) {
-         Triangle tri;
-
-         tri[0] = vh[vx];
-         tri[1] = vv[vy];
-         tri[2] = vm;
-
-         /* Loop through the x and y shifts */
-         for (int y = -1; y <= 1; ++y) {
-            for (int x = -1; x <= 1; ++x) {
-               Triangle shifted = tri;
-
-               for (int i = 0; i < 3; ++i) {
-                  shifted[i].x += x * shift;
-                  shifted[i].y += y * shift;
-               }
-
-               fixed_tests.push_back(shifted);
-            }
-         }
-      }
-   }
+	const float mid = 0.5f;
+	const float shift = 1.0f / FIXED_ONE;
+	const float size  = 3.0f / FIXED_ONE;
+
+	Vector vv[] = {
+		Vector(mid, mid + size),
+		Vector(mid, mid - size),
+	};
+
+	Vector vh[] = {
+		Vector(mid - size, mid),
+		Vector(mid + size, mid),
+	};
+
+	Vector vm(mid, mid);
+
+	/* Loop through the 4 possible triangles */
+	for (int vy = 0; vy < 2; ++vy) {
+		for (int vx = 0; vx < 2; ++vx) {
+			Triangle tri;
+
+			tri[0] = vh[vx];
+			tri[1] = vv[vy];
+			tri[2] = vm;
+
+			/* Loop through the x and y shifts */
+			for (int y = -1; y <= 1; ++y) {
+				for (int x = -1; x <= 1; ++x) {
+					Triangle shifted = tri;
+
+					for (int i = 0; i < 3; ++i) {
+						shifted[i].x += x * shift;
+						shifted[i].y += y * shift;
+					}
+
+					fixed_tests.push_back(shifted);
+				}
+			}
+		}
+	}
 }
 
 
@@ -530,34 +533,34 @@ void init_fixed_tests()
 void
 piglit_init(int argc, char **argv)
 {
-   uint32_t seed = 0xfacebeef ^ time(NULL);
-
-   for (int i = 1; i < argc; ++i) {
-      if (strcmp(argv[i], "-break_on_fail") == 0){
-         break_on_fail = true;
-         printf("Execution will stop on first fail\n");
-      } else if (strcmp(argv[i], "-print_triangle") == 0){
-         print_triangle = true;
-      } else if (strcmp(argv[i], "-max_size") == 0){
-         glGetIntegerv(GL_MAX_TEXTURE_SIZE, &fbo_width);
-
-         fbo_height = fbo_width;
-         piglit_width = fbo_width;
-         piglit_height = fbo_height;
-      } else if (strcmp(argv[i], "-use_fbo") == 0){
-         use_fbo = true;
-         printf("FBOs are in use\n");
-      } else if (i + 1 < argc) {
-         if (strcmp(argv[i], "-count") == 0) {
-            random_test_count = strtoul(argv[++i], NULL, 0);
-         } else if (strcmp(argv[i], "-seed") == 0) {
-            seed = strtoul(argv[++i], NULL, 0);
-         }
-      }
-   }
-
-   printf("Random seed: 0x%08X\n", seed);
-   mersenne.init(seed);
-
-   init_fixed_tests();
+	uint32_t seed = 0xfacebeef ^ time(NULL);
+
+	for (int i = 1; i < argc; ++i) {
+		if (strcmp(argv[i], "-break_on_fail") == 0){
+			break_on_fail = true;
+			printf("Execution will stop on first fail\n");
+		} else if (strcmp(argv[i], "-print_triangle") == 0){
+			print_triangle = true;
+		} else if (strcmp(argv[i], "-max_size") == 0){
+			glGetIntegerv(GL_MAX_TEXTURE_SIZE, &fbo_width);
+
+			fbo_height = fbo_width;
+			piglit_width = fbo_width;
+			piglit_height = fbo_height;
+		} else if (strcmp(argv[i], "-use_fbo") == 0){
+			use_fbo = true;
+			printf("FBOs are in use\n");
+		} else if (i + 1 < argc) {
+			if (strcmp(argv[i], "-count") == 0) {
+				random_test_count = strtoul(argv[++i], NULL, 0);
+			} else if (strcmp(argv[i], "-seed") == 0) {
+				seed = strtoul(argv[++i], NULL, 0);
+			}
+		}
+	}
+
+	printf("Random seed: 0x%08X\n", seed);
+	mersenne.init(seed);
+
+	init_fixed_tests();
 }