-/*\r
- * Copyright (C) 2009 VMware, Inc. All Rights Reserved.\r
- *\r
- * Permission is hereby granted, free of charge, to any person obtaining a\r
- * copy of this software and associated documentation files (the "Software"),\r
- * to deal in the Software without restriction, including without limitation\r
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,\r
- * and/or sell copies of the Software, and to permit persons to whom the\r
- * Software is furnished to do so, subject to the following conditions:\r
- *\r
- * The above copyright notice and this permission notice shall be included\r
- * in all copies or substantial portions of the Software.\r
- *\r
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS\r
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\r
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL\r
- * VMWARE BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN\r
- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN\r
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.\r
- */\r
-\r
-/**\r
- * Measure drawing overhead\r
- *\r
- * This is the first in a series of simple performance benchmarks.\r
- * The code in this file should be as simple as possible to make it\r
- * easily portable to other APIs.\r
- *\r
- * All the window-system stuff should be contained in glmain.c (or TBDmain.c).\r
- * All the re-usable, generic code should be in common.c (XXX not done yet).\r
- *\r
- * Brian Paul\r
- * 15 Sep 2009\r
- */\r
-\r
-#include "glmain.h"\r
-#include "common.h"\r
-\r
-\r
-int WinWidth = 100, WinHeight = 100;\r
-\r
-static GLuint VBO;\r
-\r
-struct vertex\r
-{\r
- GLfloat x, y;\r
-};\r
-\r
-static const struct vertex vertices[4] = {\r
- { -1.0, -1.0 },\r
- { 1.0, -1.0 },\r
- { 1.0, 1.0 },\r
- { -1.0, 1.0 }\r
-};\r
-\r
-\r
-/** Called from test harness/main */\r
-void\r
-PerfInit(void)\r
-{\r
- /* setup VBO w/ vertex data */\r
- glGenBuffersARB(1, &VBO);\r
- glBindBufferARB(GL_ARRAY_BUFFER_ARB, VBO);\r
- glBufferDataARB(GL_ARRAY_BUFFER_ARB,\r
- sizeof(vertices), vertices, GL_STATIC_DRAW_ARB);\r
- glVertexPointer(2, GL_FLOAT, sizeof(struct vertex), (void *) 0);\r
- glEnableClientState(GL_VERTEX_ARRAY);\r
-\r
- /* misc GL state */\r
- glAlphaFunc(GL_ALWAYS, 0.0);\r
-}\r
-\r
-\r
-static void\r
-DrawNoStateChange(unsigned count)\r
-{\r
- unsigned i;\r
- for (i = 0; i < count; i++) {\r
- glDrawArrays(GL_POINTS, 0, 4);\r
- }\r
- glFinish();\r
-}\r
-\r
-\r
-static void\r
-DrawNopStateChange(unsigned count)\r
-{\r
- unsigned i;\r
- for (i = 0; i < count; i++) {\r
- glDisable(GL_ALPHA_TEST);\r
- glDrawArrays(GL_POINTS, 0, 4);\r
- }\r
- glFinish();\r
-}\r
-\r
-\r
-static void\r
-DrawStateChange(unsigned count)\r
-{\r
- unsigned i;\r
- for (i = 0; i < count; i++) {\r
- if (i & 1)\r
- glEnable(GL_TEXTURE_GEN_S);\r
- else\r
- glDisable(GL_TEXTURE_GEN_S);\r
- glDrawArrays(GL_POINTS, 0, 4);\r
- }\r
- glFinish();\r
-}\r
-\r
-\r
-/** Called from test harness/main */\r
-void\r
-PerfDraw(void)\r
-{\r
- double rate0, rate1, rate2, overhead;\r
-\r
- rate0 = PerfMeasureRate(DrawNoStateChange);\r
- printf(" Draw only: %.1f draws/second\n", rate0);\r
-\r
- rate1 = PerfMeasureRate(DrawNopStateChange);\r
- overhead = 1000.0 * (1.0 / rate1 - 1.0 / rate0);\r
- printf(" Draw w/ nop state change: %.1f draws/sec (overhead: %f ms/draw)\n",\r
- rate1, overhead);\r
-\r
- rate2 = PerfMeasureRate(DrawStateChange);\r
- overhead = 1000.0 * (1.0 / rate2 - 1.0 / rate0);\r
- printf(" Draw w/ state change: %.1f draws/sec (overhead: %f ms/draw)\n",\r
- rate2, overhead);\r
-\r
- exit(0);\r
-}\r
-\r
+/*
+ * Copyright (C) 2009 VMware, Inc. All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * VMWARE 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.
+ */
+
+/**
+ * Measure drawing overhead
+ *
+ * This is the first in a series of simple performance benchmarks.
+ * The code in this file should be as simple as possible to make it
+ * easily portable to other APIs.
+ *
+ * All the window-system stuff should be contained in glmain.c (or TBDmain.c).
+ * All the re-usable, generic code should be in common.c (XXX not done yet).
+ *
+ * Brian Paul
+ * 15 Sep 2009
+ */
+
+#include "glmain.h"
+#include "common.h"
+
+
+int WinWidth = 100, WinHeight = 100;
+
+static GLuint VBO;
+
+struct vertex
+{
+ GLfloat x, y;
+};
+
+static const struct vertex vertices[4] = {
+ { -1.0, -1.0 },
+ { 1.0, -1.0 },
+ { 1.0, 1.0 },
+ { -1.0, 1.0 }
+};
+
+
+/** Called from test harness/main */
+void
+PerfInit(void)
+{
+ /* setup VBO w/ vertex data */
+ glGenBuffersARB(1, &VBO);
+ glBindBufferARB(GL_ARRAY_BUFFER_ARB, VBO);
+ glBufferDataARB(GL_ARRAY_BUFFER_ARB,
+ sizeof(vertices), vertices, GL_STATIC_DRAW_ARB);
+ glVertexPointer(2, GL_FLOAT, sizeof(struct vertex), (void *) 0);
+ glEnableClientState(GL_VERTEX_ARRAY);
+
+ /* misc GL state */
+ glAlphaFunc(GL_ALWAYS, 0.0);
+}
+
+
+static void
+DrawNoStateChange(unsigned count)
+{
+ unsigned i;
+ for (i = 0; i < count; i++) {
+ glDrawArrays(GL_POINTS, 0, 4);
+ }
+ glFinish();
+}
+
+
+static void
+DrawNopStateChange(unsigned count)
+{
+ unsigned i;
+ for (i = 0; i < count; i++) {
+ glDisable(GL_ALPHA_TEST);
+ glDrawArrays(GL_POINTS, 0, 4);
+ }
+ glFinish();
+}
+
+
+static void
+DrawStateChange(unsigned count)
+{
+ unsigned i;
+ for (i = 0; i < count; i++) {
+ if (i & 1)
+ glEnable(GL_TEXTURE_GEN_S);
+ else
+ glDisable(GL_TEXTURE_GEN_S);
+ glDrawArrays(GL_POINTS, 0, 4);
+ }
+ glFinish();
+}
+
+
+/** Called from test harness/main */
+void
+PerfDraw(void)
+{
+ double rate0, rate1, rate2, overhead;
+
+ rate0 = PerfMeasureRate(DrawNoStateChange);
+ printf(" Draw only: %.1f draws/second\n", rate0);
+
+ rate1 = PerfMeasureRate(DrawNopStateChange);
+ overhead = 1000.0 * (1.0 / rate1 - 1.0 / rate0);
+ printf(" Draw w/ nop state change: %.1f draws/sec (overhead: %f ms/draw)\n",
+ rate1, overhead);
+
+ rate2 = PerfMeasureRate(DrawStateChange);
+ overhead = 1000.0 * (1.0 / rate2 - 1.0 / rate0);
+ printf(" Draw w/ state change: %.1f draws/sec (overhead: %f ms/draw)\n",
+ rate2, overhead);
+
+ exit(0);
+}
+
-/*\r
- * Copyright (C) 2009 VMware, Inc. All Rights Reserved.\r
- *\r
- * Permission is hereby granted, free of charge, to any person obtaining a\r
- * copy of this software and associated documentation files (the "Software"),\r
- * to deal in the Software without restriction, including without limitation\r
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,\r
- * and/or sell copies of the Software, and to permit persons to whom the\r
- * Software is furnished to do so, subject to the following conditions:\r
- *\r
- * The above copyright notice and this permission notice shall be included\r
- * in all copies or substantial portions of the Software.\r
- *\r
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS\r
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\r
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL\r
- * VMWARE BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN\r
- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN\r
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.\r
- */\r
-\r
-/**\r
- * Measure glTexSubImage2D rate\r
- *\r
- * Brian Paul\r
- * 16 Sep 2009\r
- */\r
-\r
-#include "glmain.h"\r
-#include "common.h"\r
-\r
-\r
-int WinWidth = 100, WinHeight = 100;\r
-\r
-static GLuint VBO;\r
-static GLuint TexObj = 0;\r
-static GLubyte *TexImage = NULL;\r
-static GLsizei TexSize;\r
-static GLenum TexSrcFormat, TexSrcType;\r
-\r
-static const GLboolean DrawPoint = GL_TRUE;\r
-static const GLboolean TexSubImage4 = GL_TRUE;\r
-\r
-struct vertex\r
-{\r
- GLfloat x, y, s, t;\r
-};\r
-\r
-static const struct vertex vertices[1] = {\r
- { 0.0, 0.0, 0.5, 0.5 },\r
-};\r
-\r
-\r
-#define VOFFSET(F) ((void *) offsetof(struct vertex, F))\r
-\r
-/** Called from test harness/main */\r
-void\r
-PerfInit(void)\r
-{\r
- /* setup VBO w/ vertex data */\r
- glGenBuffersARB(1, &VBO);\r
- glBindBufferARB(GL_ARRAY_BUFFER_ARB, VBO);\r
- glBufferDataARB(GL_ARRAY_BUFFER_ARB,\r
- sizeof(vertices), vertices, GL_STATIC_DRAW_ARB);\r
- glVertexPointer(2, GL_FLOAT, sizeof(struct vertex), VOFFSET(x));\r
- glTexCoordPointer(2, GL_FLOAT, sizeof(struct vertex), VOFFSET(s));\r
- glEnableClientState(GL_VERTEX_ARRAY);\r
- glEnableClientState(GL_TEXTURE_COORD_ARRAY);\r
-\r
- /* texture */\r
- glGenTextures(1, &TexObj);\r
- glBindTexture(GL_TEXTURE_2D, TexObj);\r
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);\r
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);\r
- glEnable(GL_TEXTURE_2D);\r
-}\r
-\r
-\r
-static void\r
-UploadTexImage2D(unsigned count)\r
-{\r
- unsigned i;\r
- for (i = 0; i < count; i++) {\r
- /* XXX is this equivalent to a glTexSubImage call since we're\r
- * always specifying the same image size? That case isn't optimized\r
- * in Mesa but may be optimized in other drivers. Note sure how\r
- * much difference that might make.\r
- */\r
- glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA,\r
- TexSize, TexSize, 0,\r
- TexSrcFormat, TexSrcType, TexImage);\r
- if (DrawPoint)\r
- glDrawArrays(GL_POINTS, 0, 1);\r
- }\r
- glFinish();\r
-}\r
-\r
-\r
-static void\r
-UploadTexSubImage2D(unsigned count)\r
-{\r
- unsigned i;\r
- for (i = 0; i < count; i++) {\r
- if (TexSubImage4) {\r
- GLsizei halfSize = (TexSize == 1) ? 1 : TexSize / 2;\r
- GLsizei halfPos = TexSize - halfSize;\r
- /* do glTexSubImage2D in four pieces */\r
- /* lower-left */\r
- glPixelStorei(GL_UNPACK_ROW_LENGTH, TexSize);\r
- glTexSubImage2D(GL_TEXTURE_2D, 0,\r
- 0, 0, halfSize, halfSize,\r
- TexSrcFormat, TexSrcType, TexImage);\r
- /* lower-right */\r
- glPixelStorei(GL_UNPACK_SKIP_PIXELS, halfPos);\r
- glTexSubImage2D(GL_TEXTURE_2D, 0,\r
- halfPos, 0, halfSize, halfSize,\r
- TexSrcFormat, TexSrcType, TexImage);\r
- /* upper-left */\r
- glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);\r
- glPixelStorei(GL_UNPACK_SKIP_ROWS, halfPos);\r
- glTexSubImage2D(GL_TEXTURE_2D, 0,\r
- 0, halfPos, halfSize, halfSize,\r
- TexSrcFormat, TexSrcType, TexImage);\r
- /* upper-right */\r
- glPixelStorei(GL_UNPACK_SKIP_PIXELS, halfPos);\r
- glPixelStorei(GL_UNPACK_SKIP_ROWS, halfPos);\r
- glTexSubImage2D(GL_TEXTURE_2D, 0,\r
- halfPos, halfPos, halfSize, halfSize,\r
- TexSrcFormat, TexSrcType, TexImage);\r
- /* reset the unpacking state */\r
- glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);\r
- glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);\r
- glPixelStorei(GL_UNPACK_SKIP_ROWS, 0);\r
- }\r
- else {\r
- /* replace whole texture image at once */\r
- glTexSubImage2D(GL_TEXTURE_2D, 0,\r
- 0, 0, TexSize, TexSize,\r
- TexSrcFormat, TexSrcType, TexImage);\r
- }\r
- if (DrawPoint)\r
- glDrawArrays(GL_POINTS, 0, 1);\r
- }\r
- glFinish();\r
-}\r
-\r
-\r
-/* XXX any other formats to measure? */\r
-static const struct {\r
- GLenum format, type;\r
- const char *name;\r
-} SrcFormats[] = {\r
- { GL_RGBA, GL_UNSIGNED_BYTE, "GL_RGBA/GLubyte" },\r
- { GL_BGRA, GL_UNSIGNED_BYTE, "GL_BGRA/GLubyte" },\r
- { 0, 0, NULL }\r
-};\r
-\r
-\r
-\r
-/** Called from test harness/main */\r
-void\r
-PerfDraw(void)\r
-{\r
- GLint maxSize;\r
- double rate;\r
- GLint fmt, subImage;\r
-\r
- glGetIntegerv(GL_MAX_TEXTURE_SIZE, &maxSize);\r
-\r
- /* loop over source data formats */\r
- for (fmt = 0; SrcFormats[fmt].format; fmt++) {\r
- TexSrcFormat = SrcFormats[fmt].format;\r
- TexSrcType = SrcFormats[fmt].type;\r
-\r
- /* loop over glTexImage, glTexSubImage */\r
- for (subImage = 0; subImage < 2; subImage++) {\r
-\r
- /* loop over texture sizes */\r
- for (TexSize = 16; TexSize <= maxSize; TexSize *= 2) {\r
- GLint bytesPerImage;\r
- double mbPerSec;\r
-\r
- bytesPerImage = TexSize * TexSize * 4;\r
- TexImage = malloc(bytesPerImage);\r
-\r
- if (subImage) {\r
- /* create initial, empty texture */\r
- glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA,\r
- TexSize, TexSize, 0,\r
- TexSrcFormat, TexSrcType, NULL);\r
- rate = PerfMeasureRate(UploadTexSubImage2D);\r
- }\r
- else {\r
- rate = PerfMeasureRate(UploadTexImage2D);\r
- }\r
-\r
- mbPerSec = rate * bytesPerImage / (1024.0 * 1024.0);\r
-\r
- printf(" glTex%sImage2D(%s %d x %d): "\r
- "%.1f images/sec, %.1f MB/sec\n",\r
- (subImage ? "Sub" : ""),\r
- SrcFormats[fmt].name, TexSize, TexSize, rate, mbPerSec);\r
-\r
- free(TexImage);\r
- }\r
- }\r
- }\r
-\r
- exit(0);\r
-}\r
+/*
+ * Copyright (C) 2009 VMware, Inc. All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * VMWARE 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.
+ */
+
+/**
+ * Measure glTexSubImage2D rate
+ *
+ * Brian Paul
+ * 16 Sep 2009
+ */
+
+#include "glmain.h"
+#include "common.h"
+
+
+int WinWidth = 100, WinHeight = 100;
+
+static GLuint VBO;
+static GLuint TexObj = 0;
+static GLubyte *TexImage = NULL;
+static GLsizei TexSize;
+static GLenum TexSrcFormat, TexSrcType;
+
+static const GLboolean DrawPoint = GL_TRUE;
+static const GLboolean TexSubImage4 = GL_TRUE;
+
+struct vertex
+{
+ GLfloat x, y, s, t;
+};
+
+static const struct vertex vertices[1] = {
+ { 0.0, 0.0, 0.5, 0.5 },
+};
+
+
+#define VOFFSET(F) ((void *) offsetof(struct vertex, F))
+
+/** Called from test harness/main */
+void
+PerfInit(void)
+{
+ /* setup VBO w/ vertex data */
+ glGenBuffersARB(1, &VBO);
+ glBindBufferARB(GL_ARRAY_BUFFER_ARB, VBO);
+ glBufferDataARB(GL_ARRAY_BUFFER_ARB,
+ sizeof(vertices), vertices, GL_STATIC_DRAW_ARB);
+ glVertexPointer(2, GL_FLOAT, sizeof(struct vertex), VOFFSET(x));
+ glTexCoordPointer(2, GL_FLOAT, sizeof(struct vertex), VOFFSET(s));
+ glEnableClientState(GL_VERTEX_ARRAY);
+ glEnableClientState(GL_TEXTURE_COORD_ARRAY);
+
+ /* texture */
+ glGenTextures(1, &TexObj);
+ glBindTexture(GL_TEXTURE_2D, TexObj);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+ glEnable(GL_TEXTURE_2D);
+}
+
+
+static void
+UploadTexImage2D(unsigned count)
+{
+ unsigned i;
+ for (i = 0; i < count; i++) {
+ /* XXX is this equivalent to a glTexSubImage call since we're
+ * always specifying the same image size? That case isn't optimized
+ * in Mesa but may be optimized in other drivers. Note sure how
+ * much difference that might make.
+ */
+ glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA,
+ TexSize, TexSize, 0,
+ TexSrcFormat, TexSrcType, TexImage);
+ if (DrawPoint)
+ glDrawArrays(GL_POINTS, 0, 1);
+ }
+ glFinish();
+}
+
+
+static void
+UploadTexSubImage2D(unsigned count)
+{
+ unsigned i;
+ for (i = 0; i < count; i++) {
+ if (TexSubImage4) {
+ GLsizei halfSize = (TexSize == 1) ? 1 : TexSize / 2;
+ GLsizei halfPos = TexSize - halfSize;
+ /* do glTexSubImage2D in four pieces */
+ /* lower-left */
+ glPixelStorei(GL_UNPACK_ROW_LENGTH, TexSize);
+ glTexSubImage2D(GL_TEXTURE_2D, 0,
+ 0, 0, halfSize, halfSize,
+ TexSrcFormat, TexSrcType, TexImage);
+ /* lower-right */
+ glPixelStorei(GL_UNPACK_SKIP_PIXELS, halfPos);
+ glTexSubImage2D(GL_TEXTURE_2D, 0,
+ halfPos, 0, halfSize, halfSize,
+ TexSrcFormat, TexSrcType, TexImage);
+ /* upper-left */
+ glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
+ glPixelStorei(GL_UNPACK_SKIP_ROWS, halfPos);
+ glTexSubImage2D(GL_TEXTURE_2D, 0,
+ 0, halfPos, halfSize, halfSize,
+ TexSrcFormat, TexSrcType, TexImage);
+ /* upper-right */
+ glPixelStorei(GL_UNPACK_SKIP_PIXELS, halfPos);
+ glPixelStorei(GL_UNPACK_SKIP_ROWS, halfPos);
+ glTexSubImage2D(GL_TEXTURE_2D, 0,
+ halfPos, halfPos, halfSize, halfSize,
+ TexSrcFormat, TexSrcType, TexImage);
+ /* reset the unpacking state */
+ glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
+ glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
+ glPixelStorei(GL_UNPACK_SKIP_ROWS, 0);
+ }
+ else {
+ /* replace whole texture image at once */
+ glTexSubImage2D(GL_TEXTURE_2D, 0,
+ 0, 0, TexSize, TexSize,
+ TexSrcFormat, TexSrcType, TexImage);
+ }
+ if (DrawPoint)
+ glDrawArrays(GL_POINTS, 0, 1);
+ }
+ glFinish();
+}
+
+
+/* XXX any other formats to measure? */
+static const struct {
+ GLenum format, type;
+ const char *name;
+} SrcFormats[] = {
+ { GL_RGBA, GL_UNSIGNED_BYTE, "GL_RGBA/GLubyte" },
+ { GL_BGRA, GL_UNSIGNED_BYTE, "GL_BGRA/GLubyte" },
+ { 0, 0, NULL }
+};
+
+
+
+/** Called from test harness/main */
+void
+PerfDraw(void)
+{
+ GLint maxSize;
+ double rate;
+ GLint fmt, subImage;
+
+ glGetIntegerv(GL_MAX_TEXTURE_SIZE, &maxSize);
+
+ /* loop over source data formats */
+ for (fmt = 0; SrcFormats[fmt].format; fmt++) {
+ TexSrcFormat = SrcFormats[fmt].format;
+ TexSrcType = SrcFormats[fmt].type;
+
+ /* loop over glTexImage, glTexSubImage */
+ for (subImage = 0; subImage < 2; subImage++) {
+
+ /* loop over texture sizes */
+ for (TexSize = 16; TexSize <= maxSize; TexSize *= 2) {
+ GLint bytesPerImage;
+ double mbPerSec;
+
+ bytesPerImage = TexSize * TexSize * 4;
+ TexImage = malloc(bytesPerImage);
+
+ if (subImage) {
+ /* create initial, empty texture */
+ glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA,
+ TexSize, TexSize, 0,
+ TexSrcFormat, TexSrcType, NULL);
+ rate = PerfMeasureRate(UploadTexSubImage2D);
+ }
+ else {
+ rate = PerfMeasureRate(UploadTexImage2D);
+ }
+
+ mbPerSec = rate * bytesPerImage / (1024.0 * 1024.0);
+
+ printf(" glTex%sImage2D(%s %d x %d): "
+ "%.1f images/sec, %.1f MB/sec\n",
+ (subImage ? "Sub" : ""),
+ SrcFormats[fmt].name, TexSize, TexSize, rate, mbPerSec);
+
+ free(TexImage);
+ }
+ }
+ }
+
+ exit(0);
+}
-/*\r
- * Copyright (C) 2009 VMware, Inc. All Rights Reserved.\r
- *\r
- * Permission is hereby granted, free of charge, to any person obtaining a\r
- * copy of this software and associated documentation files (the "Software"),\r
- * to deal in the Software without restriction, including without limitation\r
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,\r
- * and/or sell copies of the Software, and to permit persons to whom the\r
- * Software is furnished to do so, subject to the following conditions:\r
- *\r
- * The above copyright notice and this permission notice shall be included\r
- * in all copies or substantial portions of the Software.\r
- *\r
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS\r
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\r
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL\r
- * VMWARE BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN\r
- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN\r
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.\r
- */\r
-\r
-/**\r
- * Measure VBO upload speed.\r
- * That is, measure glBufferDataARB() and glBufferSubDataARB().\r
- *\r
- * Brian Paul\r
- * 16 Sep 2009\r
- */\r
-\r
-#include <string.h>\r
-#include "glmain.h"\r
-#include "common.h"\r
-\r
-\r
-int WinWidth = 100, WinHeight = 100;\r
-\r
-static GLuint VBO;\r
-\r
-static GLsizei VBOSize = 0;\r
-static GLubyte *VBOData = NULL;\r
-\r
-static const GLboolean DrawPoint = GL_TRUE;\r
-static const GLboolean BufferSubDataInHalves = GL_TRUE;\r
-\r
-static const GLfloat Vertex0[2] = { 0.0, 0.0 };\r
-\r
-\r
-/** Called from test harness/main */\r
-void\r
-PerfInit(void)\r
-{\r
- /* setup VBO */\r
- glGenBuffersARB(1, &VBO);\r
- glBindBufferARB(GL_ARRAY_BUFFER_ARB, VBO);\r
- glVertexPointer(2, GL_FLOAT, sizeof(Vertex0), (void *) 0);\r
- glEnableClientState(GL_VERTEX_ARRAY);\r
-}\r
-\r
-\r
-static void\r
-UploadVBO(unsigned count)\r
-{\r
- unsigned i;\r
- for (i = 0; i < count; i++) {\r
- glBufferDataARB(GL_ARRAY_BUFFER, VBOSize, VBOData, GL_STREAM_DRAW_ARB);\r
-\r
- if (DrawPoint)\r
- glDrawArrays(GL_POINTS, 0, 1);\r
- }\r
- glFinish();\r
-}\r
-\r
-\r
-static void\r
-UploadSubVBO(unsigned count)\r
-{\r
- unsigned i;\r
- for (i = 0; i < count; i++) {\r
- if (BufferSubDataInHalves) {\r
- GLsizei half = VBOSize / 2;\r
- glBufferSubDataARB(GL_ARRAY_BUFFER, 0, half, VBOData);\r
- glBufferSubDataARB(GL_ARRAY_BUFFER, half, half, VBOData + half);\r
- }\r
- else {\r
- glBufferSubDataARB(GL_ARRAY_BUFFER, 0, VBOSize, VBOData);\r
- }\r
-\r
- if (DrawPoint)\r
- glDrawArrays(GL_POINTS, 0, 1);\r
- }\r
- glFinish();\r
-}\r
-\r
-\r
-static const GLsizei Sizes[] = {\r
- 64,\r
- 1024,\r
- 16*1024,\r
- 256*1024,\r
- 1024*1024,\r
- 16*1024*1024,\r
- 0 /* end of list */\r
-};\r
-\r
-\r
-/** Called from test harness/main */\r
-void\r
-PerfDraw(void)\r
-{\r
- double rate, mbPerSec;\r
- int sub, sz;\r
-\r
- /* loop over whole/sub buffer upload */\r
- for (sub = 0; sub < 2; sub++) {\r
-\r
- /* loop over VBO sizes */\r
- for (sz = 0; Sizes[sz]; sz++) {\r
- VBOSize = Sizes[sz];\r
-\r
- VBOData = malloc(VBOSize);\r
- memcpy(VBOData, Vertex0, sizeof(Vertex0));\r
-\r
- if (sub)\r
- rate = PerfMeasureRate(UploadSubVBO);\r
- else\r
- rate = PerfMeasureRate(UploadVBO);\r
-\r
- mbPerSec = rate * VBOSize / (1024.0 * 1024.0);\r
-\r
- printf(" glBuffer%sDataARB(size = %d): %.1f MB/sec\n",\r
- (sub ? "Sub" : ""), VBOSize, mbPerSec);\r
-\r
- free(VBOData);\r
- }\r
- }\r
-\r
- exit(0);\r
-}\r
+/*
+ * Copyright (C) 2009 VMware, Inc. All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * VMWARE 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.
+ */
+
+/**
+ * Measure VBO upload speed.
+ * That is, measure glBufferDataARB() and glBufferSubDataARB().
+ *
+ * Brian Paul
+ * 16 Sep 2009
+ */
+
+#include <string.h>
+#include "glmain.h"
+#include "common.h"
+
+
+int WinWidth = 100, WinHeight = 100;
+
+static GLuint VBO;
+
+static GLsizei VBOSize = 0;
+static GLubyte *VBOData = NULL;
+
+static const GLboolean DrawPoint = GL_TRUE;
+static const GLboolean BufferSubDataInHalves = GL_TRUE;
+
+static const GLfloat Vertex0[2] = { 0.0, 0.0 };
+
+
+/** Called from test harness/main */
+void
+PerfInit(void)
+{
+ /* setup VBO */
+ glGenBuffersARB(1, &VBO);
+ glBindBufferARB(GL_ARRAY_BUFFER_ARB, VBO);
+ glVertexPointer(2, GL_FLOAT, sizeof(Vertex0), (void *) 0);
+ glEnableClientState(GL_VERTEX_ARRAY);
+}
+
+
+static void
+UploadVBO(unsigned count)
+{
+ unsigned i;
+ for (i = 0; i < count; i++) {
+ glBufferDataARB(GL_ARRAY_BUFFER, VBOSize, VBOData, GL_STREAM_DRAW_ARB);
+
+ if (DrawPoint)
+ glDrawArrays(GL_POINTS, 0, 1);
+ }
+ glFinish();
+}
+
+
+static void
+UploadSubVBO(unsigned count)
+{
+ unsigned i;
+ for (i = 0; i < count; i++) {
+ if (BufferSubDataInHalves) {
+ GLsizei half = VBOSize / 2;
+ glBufferSubDataARB(GL_ARRAY_BUFFER, 0, half, VBOData);
+ glBufferSubDataARB(GL_ARRAY_BUFFER, half, half, VBOData + half);
+ }
+ else {
+ glBufferSubDataARB(GL_ARRAY_BUFFER, 0, VBOSize, VBOData);
+ }
+
+ if (DrawPoint)
+ glDrawArrays(GL_POINTS, 0, 1);
+ }
+ glFinish();
+}
+
+
+static const GLsizei Sizes[] = {
+ 64,
+ 1024,
+ 16*1024,
+ 256*1024,
+ 1024*1024,
+ 16*1024*1024,
+ 0 /* end of list */
+};
+
+
+/** Called from test harness/main */
+void
+PerfDraw(void)
+{
+ double rate, mbPerSec;
+ int sub, sz;
+
+ /* loop over whole/sub buffer upload */
+ for (sub = 0; sub < 2; sub++) {
+
+ /* loop over VBO sizes */
+ for (sz = 0; Sizes[sz]; sz++) {
+ VBOSize = Sizes[sz];
+
+ VBOData = malloc(VBOSize);
+ memcpy(VBOData, Vertex0, sizeof(Vertex0));
+
+ if (sub)
+ rate = PerfMeasureRate(UploadSubVBO);
+ else
+ rate = PerfMeasureRate(UploadVBO);
+
+ mbPerSec = rate * VBOSize / (1024.0 * 1024.0);
+
+ printf(" glBuffer%sDataARB(size = %d): %.1f MB/sec\n",
+ (sub ? "Sub" : ""), VBOSize, mbPerSec);
+
+ free(VBOData);
+ }
+ }
+
+ exit(0);
+}
-/*\r
- * Copyright (C) 2009 VMware, Inc. All Rights Reserved.\r
- *\r
- * Permission is hereby granted, free of charge, to any person obtaining a\r
- * copy of this software and associated documentation files (the "Software"),\r
- * to deal in the Software without restriction, including without limitation\r
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,\r
- * and/or sell copies of the Software, and to permit persons to whom the\r
- * Software is furnished to do so, subject to the following conditions:\r
- *\r
- * The above copyright notice and this permission notice shall be included\r
- * in all copies or substantial portions of the Software.\r
- *\r
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS\r
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\r
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL\r
- * VMWARE BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN\r
- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN\r
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.\r
- */\r
-\r
-/**\r
- * Measure simple vertex processing rate via:\r
- * - immediate mode\r
- * - vertex arrays\r
- * - VBO vertex arrays\r
- * - glDrawElements\r
- * - VBO glDrawElements\r
- * - glDrawRangeElements\r
- * - VBO glDrawRangeElements\r
- *\r
- * Brian Paul\r
- * 16 Sep 2009\r
- */\r
-\r
-#include <assert.h>\r
-#include <string.h>\r
-#include "glmain.h"\r
-#include "common.h"\r
-\r
-\r
-#define MAX_VERTS (100 * 100)\r
-\r
-/** glVertex2/3/4 size */\r
-#define VERT_SIZE 4\r
-\r
-int WinWidth = 500, WinHeight = 500;\r
-\r
-static GLuint VertexBO, ElementBO;\r
-\r
-static unsigned NumVerts = MAX_VERTS;\r
-static unsigned VertBytes = VERT_SIZE * sizeof(float);\r
-static float *VertexData = NULL;\r
-\r
-static unsigned NumElements = MAX_VERTS;\r
-static GLuint *Elements = NULL;\r
-\r
-\r
-/**\r
- * Load VertexData buffer with a 2-D grid of points in the range [-1,1]^2.\r
- */\r
-static void\r
-InitializeVertexData(void)\r
-{\r
- unsigned i;\r
- float x = -1.0, y = -1.0;\r
- float dx = 2.0 / 100;\r
- float dy = 2.0 / 100;\r
-\r
- VertexData = (float *) malloc(NumVerts * VertBytes);\r
-\r
- for (i = 0; i < NumVerts; i++) {\r
- VertexData[i * VERT_SIZE + 0] = x;\r
- VertexData[i * VERT_SIZE + 1] = y;\r
- VertexData[i * VERT_SIZE + 2] = 0.0;\r
- VertexData[i * VERT_SIZE + 3] = 1.0;\r
- x += dx;\r
- if (x > 1.0) {\r
- x = -1.0;\r
- y += dy;\r
- }\r
- }\r
-\r
- Elements = (GLuint *) malloc(NumVerts * sizeof(GLuint));\r
-\r
- for (i = 0; i < NumVerts; i++) {\r
- Elements[i] = NumVerts - i - 1;\r
- }\r
-}\r
-\r
-\r
-/** Called from test harness/main */\r
-void\r
-PerfInit(void)\r
-{\r
- InitializeVertexData();\r
-\r
- /* setup VertexBO */\r
- glGenBuffersARB(1, &VertexBO);\r
- glBindBufferARB(GL_ARRAY_BUFFER_ARB, VertexBO);\r
- glBufferDataARB(GL_ARRAY_BUFFER_ARB,\r
- NumVerts * VertBytes, VertexData, GL_STATIC_DRAW_ARB);\r
- glEnableClientState(GL_VERTEX_ARRAY);\r
-\r
- /* setup ElementBO */\r
- glGenBuffersARB(1, &ElementBO);\r
- glBindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, ElementBO);\r
- glBufferDataARB(GL_ELEMENT_ARRAY_BUFFER_ARB,\r
- NumElements * sizeof(GLuint), Elements, GL_STATIC_DRAW_ARB);\r
-}\r
-\r
-\r
-static void\r
-DrawImmediate(unsigned count)\r
-{\r
- unsigned i;\r
- glBindBufferARB(GL_ELEMENT_ARRAY_BUFFER, 0);\r
- glBindBufferARB(GL_ARRAY_BUFFER, 0);\r
- for (i = 0; i < count; i++) {\r
- unsigned j;\r
- glBegin(GL_POINTS);\r
- for (j = 0; j < NumVerts; j++) {\r
-#if VERT_SIZE == 4\r
- glVertex4fv(VertexData + j * 4);\r
-#elif VERT_SIZE == 3\r
- glVertex3fv(VertexData + j * 3);\r
-#elif VERT_SIZE == 2\r
- glVertex2fv(VertexData + j * 2);\r
-#else\r
- abort();\r
-#endif\r
- }\r
- glEnd();\r
- }\r
- glFinish();\r
- PerfSwapBuffers();\r
-}\r
-\r
-\r
-static void\r
-DrawArraysMem(unsigned count)\r
-{\r
- unsigned i;\r
- glBindBufferARB(GL_ELEMENT_ARRAY_BUFFER, 0);\r
- glBindBufferARB(GL_ARRAY_BUFFER, 0);\r
- glVertexPointer(VERT_SIZE, GL_FLOAT, VertBytes, VertexData);\r
- for (i = 0; i < count; i++) {\r
- glDrawArrays(GL_POINTS, 0, NumVerts);\r
- }\r
- glFinish();\r
- PerfSwapBuffers();\r
-}\r
-\r
-\r
-static void\r
-DrawArraysVBO(unsigned count)\r
-{\r
- unsigned i;\r
- glBindBufferARB(GL_ELEMENT_ARRAY_BUFFER, 0);\r
- glBindBufferARB(GL_ARRAY_BUFFER, VertexBO);\r
- glVertexPointer(VERT_SIZE, GL_FLOAT, VertBytes, (void *) 0);\r
- for (i = 0; i < count; i++) {\r
- glDrawArrays(GL_POINTS, 0, NumVerts);\r
- }\r
- glFinish();\r
- PerfSwapBuffers();\r
-}\r
-\r
-\r
-static void\r
-DrawElementsMem(unsigned count)\r
-{\r
- unsigned i;\r
- glBindBufferARB(GL_ELEMENT_ARRAY_BUFFER, 0);\r
- glBindBufferARB(GL_ARRAY_BUFFER, 0);\r
- glVertexPointer(VERT_SIZE, GL_FLOAT, VertBytes, VertexData);\r
- for (i = 0; i < count; i++) {\r
- glDrawElements(GL_POINTS, NumVerts, GL_UNSIGNED_INT, Elements);\r
- }\r
- glFinish();\r
- PerfSwapBuffers();\r
-}\r
-\r
-\r
-static void\r
-DrawElementsBO(unsigned count)\r
-{\r
- unsigned i;\r
- glBindBufferARB(GL_ELEMENT_ARRAY_BUFFER, ElementBO);\r
- glBindBufferARB(GL_ARRAY_BUFFER, VertexBO);\r
- glVertexPointer(VERT_SIZE, GL_FLOAT, VertBytes, (void *) 0);\r
- for (i = 0; i < count; i++) {\r
- glDrawElements(GL_POINTS, NumVerts, GL_UNSIGNED_INT, (void *) 0);\r
- }\r
- glFinish();\r
- PerfSwapBuffers();\r
-}\r
-\r
-\r
-static void\r
-DrawRangeElementsMem(unsigned count)\r
-{\r
- unsigned i;\r
- glBindBufferARB(GL_ELEMENT_ARRAY_BUFFER, 0);\r
- glBindBufferARB(GL_ARRAY_BUFFER, 0);\r
- glVertexPointer(VERT_SIZE, GL_FLOAT, VertBytes, VertexData);\r
- for (i = 0; i < count; i++) {\r
- glDrawRangeElements(GL_POINTS, 0, NumVerts - 1,\r
- NumVerts, GL_UNSIGNED_INT, Elements);\r
- }\r
- glFinish();\r
- PerfSwapBuffers();\r
-}\r
-\r
-\r
-static void\r
-DrawRangeElementsBO(unsigned count)\r
-{\r
- unsigned i;\r
- glBindBufferARB(GL_ELEMENT_ARRAY_BUFFER, ElementBO);\r
- glBindBufferARB(GL_ARRAY_BUFFER, VertexBO);\r
- glVertexPointer(VERT_SIZE, GL_FLOAT, VertBytes, (void *) 0);\r
- for (i = 0; i < count; i++) {\r
- glDrawRangeElements(GL_POINTS, 0, NumVerts - 1,\r
- NumVerts, GL_UNSIGNED_INT, (void *) 0);\r
- }\r
- glFinish();\r
- PerfSwapBuffers();\r
-}\r
-\r
-\r
-/** Called from test harness/main */\r
-void\r
-PerfDraw(void)\r
-{\r
- double rate;\r
-\r
- glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);\r
-\r
- printf("Vertex rate (%d x Vertex%df)\n", NumVerts, VERT_SIZE);\r
-\r
- rate = PerfMeasureRate(DrawImmediate);\r
- rate *= NumVerts;\r
- printf(" Immediate mode: %.1f verts/sec\n", rate);\r
-\r
- rate = PerfMeasureRate(DrawArraysMem);\r
- rate *= NumVerts;\r
- printf(" glDrawArrays: %.1f verts/sec\n", rate);\r
-\r
- rate = PerfMeasureRate(DrawArraysVBO);\r
- rate *= NumVerts;\r
- printf(" VBO glDrawArrays: %.1f verts/sec\n", rate);\r
-\r
- rate = PerfMeasureRate(DrawElementsMem);\r
- rate *= NumVerts;\r
- printf(" glDrawElements: %.1f verts/sec\n", rate);\r
-\r
- rate = PerfMeasureRate(DrawElementsBO);\r
- rate *= NumVerts;\r
- printf(" VBO glDrawElements: %.1f verts/sec\n", rate);\r
-\r
- rate = PerfMeasureRate(DrawRangeElementsMem);\r
- rate *= NumVerts;\r
- printf(" glDrawRangeElements: %.1f verts/sec\n", rate);\r
-\r
- rate = PerfMeasureRate(DrawRangeElementsBO);\r
- rate *= NumVerts;\r
- printf(" VBO glDrawRangeElements: %.1f verts/sec\n", rate);\r
-\r
- exit(0);\r
-}\r
+/*
+ * Copyright (C) 2009 VMware, Inc. All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * VMWARE 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.
+ */
+
+/**
+ * Measure simple vertex processing rate via:
+ * - immediate mode
+ * - vertex arrays
+ * - VBO vertex arrays
+ * - glDrawElements
+ * - VBO glDrawElements
+ * - glDrawRangeElements
+ * - VBO glDrawRangeElements
+ *
+ * Brian Paul
+ * 16 Sep 2009
+ */
+
+#include <assert.h>
+#include <string.h>
+#include "glmain.h"
+#include "common.h"
+
+
+#define MAX_VERTS (100 * 100)
+
+/** glVertex2/3/4 size */
+#define VERT_SIZE 4
+
+int WinWidth = 500, WinHeight = 500;
+
+static GLuint VertexBO, ElementBO;
+
+static unsigned NumVerts = MAX_VERTS;
+static unsigned VertBytes = VERT_SIZE * sizeof(float);
+static float *VertexData = NULL;
+
+static unsigned NumElements = MAX_VERTS;
+static GLuint *Elements = NULL;
+
+
+/**
+ * Load VertexData buffer with a 2-D grid of points in the range [-1,1]^2.
+ */
+static void
+InitializeVertexData(void)
+{
+ unsigned i;
+ float x = -1.0, y = -1.0;
+ float dx = 2.0 / 100;
+ float dy = 2.0 / 100;
+
+ VertexData = (float *) malloc(NumVerts * VertBytes);
+
+ for (i = 0; i < NumVerts; i++) {
+ VertexData[i * VERT_SIZE + 0] = x;
+ VertexData[i * VERT_SIZE + 1] = y;
+ VertexData[i * VERT_SIZE + 2] = 0.0;
+ VertexData[i * VERT_SIZE + 3] = 1.0;
+ x += dx;
+ if (x > 1.0) {
+ x = -1.0;
+ y += dy;
+ }
+ }
+
+ Elements = (GLuint *) malloc(NumVerts * sizeof(GLuint));
+
+ for (i = 0; i < NumVerts; i++) {
+ Elements[i] = NumVerts - i - 1;
+ }
+}
+
+
+/** Called from test harness/main */
+void
+PerfInit(void)
+{
+ InitializeVertexData();
+
+ /* setup VertexBO */
+ glGenBuffersARB(1, &VertexBO);
+ glBindBufferARB(GL_ARRAY_BUFFER_ARB, VertexBO);
+ glBufferDataARB(GL_ARRAY_BUFFER_ARB,
+ NumVerts * VertBytes, VertexData, GL_STATIC_DRAW_ARB);
+ glEnableClientState(GL_VERTEX_ARRAY);
+
+ /* setup ElementBO */
+ glGenBuffersARB(1, &ElementBO);
+ glBindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, ElementBO);
+ glBufferDataARB(GL_ELEMENT_ARRAY_BUFFER_ARB,
+ NumElements * sizeof(GLuint), Elements, GL_STATIC_DRAW_ARB);
+}
+
+
+static void
+DrawImmediate(unsigned count)
+{
+ unsigned i;
+ glBindBufferARB(GL_ELEMENT_ARRAY_BUFFER, 0);
+ glBindBufferARB(GL_ARRAY_BUFFER, 0);
+ for (i = 0; i < count; i++) {
+ unsigned j;
+ glBegin(GL_POINTS);
+ for (j = 0; j < NumVerts; j++) {
+#if VERT_SIZE == 4
+ glVertex4fv(VertexData + j * 4);
+#elif VERT_SIZE == 3
+ glVertex3fv(VertexData + j * 3);
+#elif VERT_SIZE == 2
+ glVertex2fv(VertexData + j * 2);
+#else
+ abort();
+#endif
+ }
+ glEnd();
+ }
+ glFinish();
+ PerfSwapBuffers();
+}
+
+
+static void
+DrawArraysMem(unsigned count)
+{
+ unsigned i;
+ glBindBufferARB(GL_ELEMENT_ARRAY_BUFFER, 0);
+ glBindBufferARB(GL_ARRAY_BUFFER, 0);
+ glVertexPointer(VERT_SIZE, GL_FLOAT, VertBytes, VertexData);
+ for (i = 0; i < count; i++) {
+ glDrawArrays(GL_POINTS, 0, NumVerts);
+ }
+ glFinish();
+ PerfSwapBuffers();
+}
+
+
+static void
+DrawArraysVBO(unsigned count)
+{
+ unsigned i;
+ glBindBufferARB(GL_ELEMENT_ARRAY_BUFFER, 0);
+ glBindBufferARB(GL_ARRAY_BUFFER, VertexBO);
+ glVertexPointer(VERT_SIZE, GL_FLOAT, VertBytes, (void *) 0);
+ for (i = 0; i < count; i++) {
+ glDrawArrays(GL_POINTS, 0, NumVerts);
+ }
+ glFinish();
+ PerfSwapBuffers();
+}
+
+
+static void
+DrawElementsMem(unsigned count)
+{
+ unsigned i;
+ glBindBufferARB(GL_ELEMENT_ARRAY_BUFFER, 0);
+ glBindBufferARB(GL_ARRAY_BUFFER, 0);
+ glVertexPointer(VERT_SIZE, GL_FLOAT, VertBytes, VertexData);
+ for (i = 0; i < count; i++) {
+ glDrawElements(GL_POINTS, NumVerts, GL_UNSIGNED_INT, Elements);
+ }
+ glFinish();
+ PerfSwapBuffers();
+}
+
+
+static void
+DrawElementsBO(unsigned count)
+{
+ unsigned i;
+ glBindBufferARB(GL_ELEMENT_ARRAY_BUFFER, ElementBO);
+ glBindBufferARB(GL_ARRAY_BUFFER, VertexBO);
+ glVertexPointer(VERT_SIZE, GL_FLOAT, VertBytes, (void *) 0);
+ for (i = 0; i < count; i++) {
+ glDrawElements(GL_POINTS, NumVerts, GL_UNSIGNED_INT, (void *) 0);
+ }
+ glFinish();
+ PerfSwapBuffers();
+}
+
+
+static void
+DrawRangeElementsMem(unsigned count)
+{
+ unsigned i;
+ glBindBufferARB(GL_ELEMENT_ARRAY_BUFFER, 0);
+ glBindBufferARB(GL_ARRAY_BUFFER, 0);
+ glVertexPointer(VERT_SIZE, GL_FLOAT, VertBytes, VertexData);
+ for (i = 0; i < count; i++) {
+ glDrawRangeElements(GL_POINTS, 0, NumVerts - 1,
+ NumVerts, GL_UNSIGNED_INT, Elements);
+ }
+ glFinish();
+ PerfSwapBuffers();
+}
+
+
+static void
+DrawRangeElementsBO(unsigned count)
+{
+ unsigned i;
+ glBindBufferARB(GL_ELEMENT_ARRAY_BUFFER, ElementBO);
+ glBindBufferARB(GL_ARRAY_BUFFER, VertexBO);
+ glVertexPointer(VERT_SIZE, GL_FLOAT, VertBytes, (void *) 0);
+ for (i = 0; i < count; i++) {
+ glDrawRangeElements(GL_POINTS, 0, NumVerts - 1,
+ NumVerts, GL_UNSIGNED_INT, (void *) 0);
+ }
+ glFinish();
+ PerfSwapBuffers();
+}
+
+
+/** Called from test harness/main */
+void
+PerfDraw(void)
+{
+ double rate;
+
+ glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+ printf("Vertex rate (%d x Vertex%df)\n", NumVerts, VERT_SIZE);
+
+ rate = PerfMeasureRate(DrawImmediate);
+ rate *= NumVerts;
+ printf(" Immediate mode: %.1f verts/sec\n", rate);
+
+ rate = PerfMeasureRate(DrawArraysMem);
+ rate *= NumVerts;
+ printf(" glDrawArrays: %.1f verts/sec\n", rate);
+
+ rate = PerfMeasureRate(DrawArraysVBO);
+ rate *= NumVerts;
+ printf(" VBO glDrawArrays: %.1f verts/sec\n", rate);
+
+ rate = PerfMeasureRate(DrawElementsMem);
+ rate *= NumVerts;
+ printf(" glDrawElements: %.1f verts/sec\n", rate);
+
+ rate = PerfMeasureRate(DrawElementsBO);
+ rate *= NumVerts;
+ printf(" VBO glDrawElements: %.1f verts/sec\n", rate);
+
+ rate = PerfMeasureRate(DrawRangeElementsMem);
+ rate *= NumVerts;
+ printf(" glDrawRangeElements: %.1f verts/sec\n", rate);
+
+ rate = PerfMeasureRate(DrawRangeElementsBO);
+ rate *= NumVerts;
+ printf(" VBO glDrawRangeElements: %.1f verts/sec\n", rate);
+
+ exit(0);
+}
projects / mesa.git / commitdiff