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/*
* 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 fill rates.
*
* Brian Paul
* 21 Sep 2009
*/
#include "glmain.h"
#include "common.h"
int WinWidth = 1000, WinHeight = 1000;
static GLuint VBO, TexObj;
struct vertex
{
GLfloat x, y, s, t, r, g, b, a;
};
#define VOFFSET(F) ((void *) offsetof(struct vertex, F))
static const struct vertex vertices[4] = {
/* x y s t r g b a */
{ -1.0, -1.0, 0.0, 0.0, 1.0, 0.0, 0.0, 0.5 },
{ 1.0, -1.0, 1.0, 0.0, 0.0, 1.0, 0.0, 0.5 },
{ 1.0, 1.0, 1.0, 1.0, 0.0, 0.0, 1.0, 0.5 },
{ -1.0, 1.0, 0.0, 1.0, 1.0, 1.0, 1.0, 0.5 }
};
static const char *VertexShader =
"void main() \n"
"{ \n"
" gl_Position = ftransform(); \n"
" gl_TexCoord[0] = gl_MultiTexCoord0; \n"
" gl_FrontColor = gl_Color; \n"
"} \n";
/* simple fragment shader */
static const char *FragmentShader1 =
"uniform sampler2D Tex; \n"
"void main() \n"
"{ \n"
" vec4 t = texture2D(Tex, gl_TexCoord[0].xy); \n"
" gl_FragColor = vec4(1.0) - t * gl_Color; \n"
"} \n";
/**
* A more complex fragment shader (but equivalent to first shader).
* A good optimizer should catch some of these no-op operations, but
* probably not all of them.
*/
static const char *FragmentShader2 =
"uniform sampler2D Tex; \n"
"void main() \n"
"{ \n"
" // as above \n"
" vec4 t = texture2D(Tex, gl_TexCoord[0].xy); \n"
" t = vec4(1.0) - t * gl_Color; \n"
" vec4 u; \n"
" // no-op negate/swizzle \n"
" u = -t.wzyx; \n"
" t = -u.wzyx; \n"
" // no-op inverts \n"
" t = vec4(1.0) - t; \n"
" t = vec4(1.0) - t; \n"
" // no-op min/max \n"
" t = min(t, t); \n"
" t = max(t, t); \n"
" // no-op moves \n"
" u = t; \n"
" t = u; \n"
" u = t; \n"
" t = u; \n"
" // no-op add/mul \n"
" t = (t + t + t + t) * 0.25; \n"
" // no-op mul/sub \n"
" t = 3.0 * t - 2.0 * t; \n"
" // no-op negate/min/max \n"
" t = -min(-t, -t); \n"
" t = -max(-t, -t); \n"
" gl_FragColor = t; \n"
"} \n";
static GLuint ShaderProg1, ShaderProg2;
/** Called from test harness/main */
void
PerfInit(void)
{
GLint u;
/* 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));
glColorPointer(4, GL_FLOAT, sizeof(struct vertex), VOFFSET(r));
glEnableClientState(GL_VERTEX_ARRAY);
glEnableClientState(GL_COLOR_ARRAY);
/* setup texture */
TexObj = PerfCheckerTexture(128, 128);
/* setup shaders */
ShaderProg1 = PerfShaderProgram(VertexShader, FragmentShader1);
glUseProgram(ShaderProg1);
u = glGetUniformLocation(ShaderProg1, "Tex");
glUniform1i(u, 0); /* texture unit 0 */
ShaderProg2 = PerfShaderProgram(VertexShader, FragmentShader2);
glUseProgram(ShaderProg2);
u = glGetUniformLocation(ShaderProg2, "Tex");
glUniform1i(u, 0); /* texture unit 0 */
glUseProgram(0);
}
static void
Ortho(void)
{
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(-1.0, 1.0, -1.0, 1.0, -1.0, 1.0);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
}
static void
DrawQuad(unsigned count)
{
unsigned i;
glClear(GL_COLOR_BUFFER_BIT);
for (i = 0; i < count; i++) {
glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
/* Avoid sending command buffers with huge numbers of fullscreen
* quads. Graphics schedulers don't always cope well with
* this...
*/
if (i % 128 == 0) {
PerfSwapBuffers();
glClear(GL_COLOR_BUFFER_BIT);
}
}
glFinish();
if (1)
PerfSwapBuffers();
}
void
PerfNextRound(void)
{
}
/** Called from test harness/main */
void
PerfDraw(void)
{
double rate;
double pixelsPerDraw = WinWidth * WinHeight;
Ortho();
/* simple fill */
rate = PerfMeasureRate(DrawQuad) * pixelsPerDraw;
perf_printf(" Simple fill: %s pixels/second\n",
PerfHumanFloat(rate));
/* blended fill */
glEnable(GL_BLEND);
rate = PerfMeasureRate(DrawQuad) * pixelsPerDraw;
glDisable(GL_BLEND);
perf_printf(" Blended fill: %s pixels/second\n",
PerfHumanFloat(rate));
/* textured fill */
glEnable(GL_TEXTURE_2D);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
rate = PerfMeasureRate(DrawQuad) * pixelsPerDraw;
glDisable(GL_TEXTURE_2D);
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
perf_printf(" Textured fill: %s pixels/second\n",
PerfHumanFloat(rate));
/* shader1 fill */
glUseProgram(ShaderProg1);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
rate = PerfMeasureRate(DrawQuad) * pixelsPerDraw;
glUseProgram(0);
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
perf_printf(" Shader1 fill: %s pixels/second\n",
PerfHumanFloat(rate));
/* shader2 fill */
glUseProgram(ShaderProg2);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
rate = PerfMeasureRate(DrawQuad) * pixelsPerDraw;
glUseProgram(0);
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
perf_printf(" Shader2 fill: %s pixels/second\n",
PerfHumanFloat(rate));
exit(0);
}
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