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Add an on-screen overdraw counter

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The counter can be enabled by setting the system property called
debug.hwui.overdraw to the string "count". If the string is set
to "show", overdraw will be highlighted on screen instead of
printing out a simple counter.

Change-Id: I9a9c970d54bffab43138bbb7682f6c04bc2c40bd
This commit is contained in:
Romain Guy
2013-05-03 14:24:16 -07:00
parent 927bc7d720
commit 78dd96d5af
13 changed files with 241 additions and 25 deletions
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15
libs/hwui/ProgramCache.cpp
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@ -342,6 +342,12 @@ const char* gFS_Main_ApplyColorOp[4] = {
};
const char* gFS_Main_DebugHighlight =
" gl_FragColor.rgb = vec3(0.0, gl_FragColor.a, 0.0);\n";
const char* gFS_Main_EmulateStencil =
" gl_FragColor.rgba = vec4(1.0 / 255.0, 1.0 / 255.0, 1.0 / 255.0, 1.0);\n"
" return;\n"
" /*\n";
const char* gFS_Footer_EmulateStencil =
" */\n";
const char* gFS_Footer =
"}\n\n";
@ -603,7 +609,8 @@ String8 ProgramCache::generateFragmentShader(const ProgramDescription& descripti
// Optimization for common cases
if (!description.isAA && !blendFramebuffer && !description.hasColors &&
description.colorOp == ProgramDescription::kColorNone &&
!description.isPoint && !description.hasDebugHighlight) {
!description.isPoint && !description.hasDebugHighlight &&
!description.emulateStencil) {
bool fast = false;
const bool noShader = !description.hasGradient && !description.hasBitmap;
@ -683,6 +690,9 @@ String8 ProgramCache::generateFragmentShader(const ProgramDescription& descripti
// Begin the shader
shader.append(gFS_Main); {
if (description.emulateStencil) {
shader.append(gFS_Main_EmulateStencil);
}
// Stores the result in fragColor directly
if (description.hasTexture || description.hasExternalTexture) {
if (description.hasAlpha8Texture) {
@ -757,6 +767,9 @@ String8 ProgramCache::generateFragmentShader(const ProgramDescription& descripti
shader.append(gFS_Main_DebugHighlight);
}
}
if (description.emulateStencil) {
shader.append(gFS_Footer_EmulateStencil);
}
// End the shader
shader.append(gFS_Footer);