add experimental state tracker for opengl
git-svn-id: http://skia.googlecode.com/svn/trunk@211 2bbb7eff-a529-9590-31e7-b0007b416f81
This commit is contained in:
reed@android.com
parent
f16c899a74
commit
b34086a37f
155
src/gl/SkGLState.cpp
Normal file
155
src/gl/SkGLState.cpp
Normal file
@ -0,0 +1,155 @@
|
||||
#include "SkGLState.h"
|
||||
#include "SkColorPriv.h"
|
||||
|
||||
// here is our global instance
|
||||
SkGLState SkGLState::gState;
|
||||
|
||||
// this is an illegal pmcolor, since its alpha (0) is less than its red
|
||||
#define UNKNOWN_PMCOLOR (SK_R32_MASK << SK_R32_SHIFT)
|
||||
|
||||
#define UNKNOWN_GLENUM ((GLenum)-1)
|
||||
|
||||
// MUST be in the same order as SkGLState::Caps enum
|
||||
static const GLenum gCapsTable[] = {
|
||||
GL_DITHER,
|
||||
GL_TEXTURE_2D,
|
||||
};
|
||||
|
||||
// MUST be in the same order as SkGLState::ClientState enum
|
||||
static const GLenum gClientStateTable[] = {
|
||||
GL_TEXTURE_COORD_ARRAY,
|
||||
GL_COLOR_ARRAY,
|
||||
};
|
||||
|
||||
static const GLenum gShadeModelTable[] = {
|
||||
GL_FLAT,
|
||||
GL_SMOOTH
|
||||
};
|
||||
|
||||
///////////////////////////////////////////////////////////////////////////////
|
||||
|
||||
SkGLState::SkGLState() :
|
||||
fCapsPtr(gCapsTable),
|
||||
fClientPtr(gClientStateTable),
|
||||
fShadePtr(gShadeModelTable) {
|
||||
this->init();
|
||||
}
|
||||
|
||||
void SkGLState::init() {
|
||||
fCapBits = 0;
|
||||
fClientStateBits = 0;
|
||||
fShadeModel = UNKNOWN_GLENUM;
|
||||
fScissorSize.set(-1, -1);
|
||||
fPMColor = UNKNOWN_PMCOLOR;
|
||||
fSrcBlend = fDstBlend = UNKNOWN_GLENUM;
|
||||
fPointSize = fLineWidth = -1;
|
||||
}
|
||||
|
||||
void SkGLState::reset() {
|
||||
this->init();
|
||||
|
||||
size_t i;
|
||||
for (i = 0; i < SK_ARRAY_COUNT(gCapsTable); i++) {
|
||||
glDisable(fCapsPtr[i]);
|
||||
}
|
||||
for (i = 0; i < SK_ARRAY_COUNT(gClientStateTable); i++) {
|
||||
glDisableClientState(fClientPtr[i]);
|
||||
}
|
||||
}
|
||||
|
||||
///////////////////////////////////////////////////////////////////////////////
|
||||
|
||||
void SkGLState::enable(Caps c) {
|
||||
unsigned mask = 1 << c;
|
||||
if ((fCapBits & mask) == 0) {
|
||||
fCapBits |= mask;
|
||||
glEnable(fCapsPtr[c]);
|
||||
}
|
||||
}
|
||||
|
||||
void SkGLState::disable(Caps c) {
|
||||
unsigned mask = 1 << c;
|
||||
if (fCapBits & mask) {
|
||||
fCapBits &= ~mask;
|
||||
glDisable(fCapsPtr[c]);
|
||||
}
|
||||
}
|
||||
|
||||
void SkGLState::enableClientState(ClientState c) {
|
||||
unsigned mask = 1 << c;
|
||||
if ((fClientStateBits & mask) == 0) {
|
||||
fClientStateBits |= mask;
|
||||
glEnableClientState(fClientPtr[c]);
|
||||
}
|
||||
}
|
||||
|
||||
void SkGLState::disableClientState(ClientState c) {
|
||||
unsigned mask = 1 << c;
|
||||
if (fClientStateBits & mask) {
|
||||
fClientStateBits &= ~mask;
|
||||
glDisableClientState(fClientPtr[c]);
|
||||
}
|
||||
}
|
||||
|
||||
void SkGLState::shadeModel(ShadeModel s) {
|
||||
if (fShadeModel != s) {
|
||||
fShadeModel = s;
|
||||
glShadeModel(fShadePtr[s]);
|
||||
}
|
||||
}
|
||||
|
||||
void SkGLState::scissor(int x, int y, int w, int h) {
|
||||
SkASSERT(w >= 0 && h >= 0);
|
||||
if (!fScissorLoc.equals(x, y) || !fScissorSize.equals(w, h)) {
|
||||
fScissorLoc.set(x, y);
|
||||
fScissorSize.set(w, h);
|
||||
glScissor(x, y, w, h);
|
||||
}
|
||||
}
|
||||
|
||||
void SkGLState::pointSize(float x) {
|
||||
if (fPointSize != x) {
|
||||
fPointSize = x;
|
||||
glPointSize(x);
|
||||
}
|
||||
}
|
||||
|
||||
void SkGLState::lineWidth(float x) {
|
||||
if (fLineWidth != x) {
|
||||
fLineWidth = x;
|
||||
glLineWidth(x);
|
||||
}
|
||||
}
|
||||
|
||||
void SkGLState::blendFunc(GLenum src, GLenum dst) {
|
||||
if (fSrcBlend != src || fDstBlend != dst) {
|
||||
fSrcBlend = src;
|
||||
fDstBlend = dst;
|
||||
glBlendFunc(src, dst);
|
||||
}
|
||||
}
|
||||
|
||||
///////////////////////////////////////////////////////////////////////////////
|
||||
|
||||
#ifdef SK_GL_HAS_COLOR4UB
|
||||
static inline void gl_pmcolor(U8CPU r, U8CPU g, U8CPU b, U8CPU a) {
|
||||
glColor4ub(r, g, b, a);
|
||||
}
|
||||
#else
|
||||
static inline SkFixed byte2fixed(U8CPU value) {
|
||||
return ((value << 8) | value) + (value >> 7);
|
||||
}
|
||||
|
||||
static inline void gl_pmcolor(U8CPU r, U8CPU g, U8CPU b, U8CPU a) {
|
||||
glColor4x(byte2fixed(r), byte2fixed(g), byte2fixed(b), byte2fixed(a));
|
||||
}
|
||||
#endif
|
||||
|
||||
void SkGLState::pmColor(SkPMColor c) {
|
||||
if (fPMColor != c) {
|
||||
fPMColor = c;
|
||||
gl_pmcolor(SkGetPackedR32(c), SkGetPackedG32(c),
|
||||
SkGetPackedB32(c), SkGetPackedA32(c));
|
||||
}
|
||||
}
|
||||
|
||||
74
src/gl/SkGLState.h
Normal file
74
src/gl/SkGLState.h
Normal file
@ -0,0 +1,74 @@
|
||||
|
||||
#ifndef SkGLState_DEFINED
|
||||
#define SkGLState_DEFINED
|
||||
|
||||
#include "SkGL.h"
|
||||
#include "SkSize.h"
|
||||
|
||||
class SkGLState {
|
||||
public:
|
||||
static SkGLState& GlobalState() { return gState; }
|
||||
|
||||
SkGLState();
|
||||
|
||||
void reset();
|
||||
|
||||
// internally, these are bit_shifts, so they must be 0, 1, ...
|
||||
enum Caps {
|
||||
kDITHER,
|
||||
kTEXTURE_2D,
|
||||
};
|
||||
void enable(Caps);
|
||||
void disable(Caps);
|
||||
|
||||
// internally, these are bit_shifts, so they must be 0, 1, ...
|
||||
enum ClientState {
|
||||
kTEXTURE_COORD_ARRAY,
|
||||
kCOLOR_ARRAY,
|
||||
};
|
||||
void enableClientState(ClientState);
|
||||
void disableClientState(ClientState);
|
||||
|
||||
// we use -1 for unknown, so the enum must be >= 0
|
||||
enum ShadeModel {
|
||||
kFLAT,
|
||||
kSMOOTH,
|
||||
};
|
||||
void shadeModel(ShadeModel);
|
||||
|
||||
void scissor(int x, int y, int w, int h);
|
||||
|
||||
void color(SkColor c) {
|
||||
this->pmColor(SkPreMultiplyColor(c));
|
||||
}
|
||||
void alpha(U8CPU a) {
|
||||
this->pmColor((a << 24) | (a << 16) | (a << 8) | a);
|
||||
}
|
||||
void pmColor(SkPMColor);
|
||||
|
||||
void blendFunc(GLenum src, GLenum dst);
|
||||
|
||||
void pointSize(float);
|
||||
void lineWidth(float);
|
||||
|
||||
private:
|
||||
void init();
|
||||
|
||||
unsigned fCapBits;
|
||||
unsigned fClientStateBits;
|
||||
int fShadeModel;
|
||||
SkIPoint fScissorLoc;
|
||||
SkISize fScissorSize;
|
||||
SkPMColor fPMColor;
|
||||
GLenum fSrcBlend, fDstBlend;
|
||||
float fPointSize;
|
||||
float fLineWidth;
|
||||
|
||||
const GLenum* fCapsPtr;
|
||||
const GLenum* fClientPtr;
|
||||
const GLenum* fShadePtr;
|
||||
|
||||
static SkGLState gState;
|
||||
};
|
||||
|
||||
#endif
|
||||
@ -18,7 +18,6 @@
|
||||
0064EE2A0FC72BEE00D71FB0 /* SampleCircle.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 0064EDF50FC72BEE00D71FB0 /* SampleCircle.cpp */; };
|
||||
0064EE2B0FC72BEE00D71FB0 /* SampleCull.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 0064EDF70FC72BEE00D71FB0 /* SampleCull.cpp */; };
|
||||
0064EE2C0FC72BEE00D71FB0 /* SampleDither.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 0064EDF80FC72BEE00D71FB0 /* SampleDither.cpp */; };
|
||||
0064EE2D0FC72BEE00D71FB0 /* SampleDrawLooper.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 0064EDF90FC72BEE00D71FB0 /* SampleDrawLooper.cpp */; };
|
||||
0064EE2E0FC72BEE00D71FB0 /* SampleEffects.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 0064EDFA0FC72BEE00D71FB0 /* SampleEffects.cpp */; };
|
||||
0064EE2F0FC72BEE00D71FB0 /* SampleEmboss.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 0064EDFB0FC72BEE00D71FB0 /* SampleEmboss.cpp */; };
|
||||
0064EE300FC72BEE00D71FB0 /* SampleEncode.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 0064EDFC0FC72BEE00D71FB0 /* SampleEncode.cpp */; };
|
||||
@ -72,6 +71,9 @@
|
||||
00A728490FD43E7600D5051F /* SampleMovie.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 0064EE0C0FC72BEE00D71FB0 /* SampleMovie.cpp */; };
|
||||
00A7284D0FD43E8900D5051F /* SkMovie.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 00A7284B0FD43E8900D5051F /* SkMovie.cpp */; };
|
||||
00A728DD0FD6EDA700D5051F /* SkConcaveToTriangles.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 00A728DC0FD6EDA700D5051F /* SkConcaveToTriangles.cpp */; };
|
||||
00AF77290FE15339007F9650 /* SkGLState.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 00AF77280FE15339007F9650 /* SkGLState.cpp */; };
|
||||
00AF77540FE155BE007F9650 /* SampleVertices.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 0064EE220FC72BEE00D71FB0 /* SampleVertices.cpp */; };
|
||||
00AF77810FE19B56007F9650 /* SampleDrawLooper.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 0064EDF90FC72BEE00D71FB0 /* SampleDrawLooper.cpp */; };
|
||||
2762F6040FCCC832002BD8B4 /* SampleShapes.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 0064EE190FC72BEE00D71FB0 /* SampleShapes.cpp */; };
|
||||
2762F6420FCCCA6C002BD8B4 /* SkFlipPixelRef.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 2762F6400FCCCA6C002BD8B4 /* SkFlipPixelRef.cpp */; };
|
||||
2762F6430FCCCA6C002BD8B4 /* SkPageFlipper.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 2762F6410FCCCA6C002BD8B4 /* SkPageFlipper.cpp */; };
|
||||
@ -84,7 +86,6 @@
|
||||
277836500FCF89F9006549E4 /* OpenGL.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 2778364F0FCF89F9006549E4 /* OpenGL.framework */; };
|
||||
2779F2610FD61678005D376E /* SampleXfermodes.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 0064EE230FC72BEE00D71FB0 /* SampleXfermodes.cpp */; };
|
||||
2779F27E0FD61829005D376E /* SampleText.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 0064EE1C0FC72BEE00D71FB0 /* SampleText.cpp */; };
|
||||
27E1AAA70FD0C51B00098FC5 /* SampleVertices.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 0064EE220FC72BEE00D71FB0 /* SampleVertices.cpp */; };
|
||||
27E1AAE00FD0C9B500098FC5 /* SampleShaders.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 0064EE180FC72BEE00D71FB0 /* SampleShaders.cpp */; };
|
||||
27E1AB2B0FD0D06600098FC5 /* SamplePageFlip.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 0064EE0F0FC72BEE00D71FB0 /* SamplePageFlip.cpp */; };
|
||||
27F9A4C90FDF4CE900C1CE9A /* SamplePatch.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 0064EE100FC72BEE00D71FB0 /* SamplePatch.cpp */; };
|
||||
@ -232,6 +233,7 @@
|
||||
00A7284B0FD43E8900D5051F /* SkMovie.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = SkMovie.cpp; path = ../../src/images/SkMovie.cpp; sourceTree = SOURCE_ROOT; };
|
||||
00A7284C0FD43E8900D5051F /* SkMovie_gif.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = SkMovie_gif.cpp; path = ../../src/images/SkMovie_gif.cpp; sourceTree = SOURCE_ROOT; };
|
||||
00A728DC0FD6EDA700D5051F /* SkConcaveToTriangles.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = SkConcaveToTriangles.cpp; path = ../../src/core/SkConcaveToTriangles.cpp; sourceTree = SOURCE_ROOT; };
|
||||
00AF77280FE15339007F9650 /* SkGLState.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = SkGLState.cpp; path = ../../src/gl/SkGLState.cpp; sourceTree = SOURCE_ROOT; };
|
||||
089C165DFE840E0CC02AAC07 /* English */ = {isa = PBXFileReference; fileEncoding = 10; lastKnownFileType = text.plist.strings; name = English; path = English.lproj/InfoPlist.strings; sourceTree = "<group>"; };
|
||||
1058C7A1FEA54F0111CA2CBB /* Cocoa.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = Cocoa.framework; path = /System/Library/Frameworks/Cocoa.framework; sourceTree = "<absolute>"; };
|
||||
2762F6400FCCCA6C002BD8B4 /* SkFlipPixelRef.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = SkFlipPixelRef.cpp; path = ../../src/images/SkFlipPixelRef.cpp; sourceTree = SOURCE_ROOT; };
|
||||
@ -421,6 +423,7 @@
|
||||
277836430FCF890D006549E4 /* opengl */ = {
|
||||
isa = PBXGroup;
|
||||
children = (
|
||||
00AF77280FE15339007F9650 /* SkGLState.cpp */,
|
||||
00A728DC0FD6EDA700D5051F /* SkConcaveToTriangles.cpp */,
|
||||
277836370FCF8908006549E4 /* SkGL.cpp */,
|
||||
277836380FCF8908006549E4 /* SkGLCanvas.cpp */,
|
||||
@ -585,7 +588,6 @@
|
||||
0064EE2A0FC72BEE00D71FB0 /* SampleCircle.cpp in Sources */,
|
||||
0064EE2B0FC72BEE00D71FB0 /* SampleCull.cpp in Sources */,
|
||||
0064EE2C0FC72BEE00D71FB0 /* SampleDither.cpp in Sources */,
|
||||
0064EE2D0FC72BEE00D71FB0 /* SampleDrawLooper.cpp in Sources */,
|
||||
0064EE2E0FC72BEE00D71FB0 /* SampleEffects.cpp in Sources */,
|
||||
0064EE2F0FC72BEE00D71FB0 /* SampleEmboss.cpp in Sources */,
|
||||
0064EE300FC72BEE00D71FB0 /* SampleEncode.cpp in Sources */,
|
||||
@ -641,7 +643,6 @@
|
||||
277836400FCF8908006549E4 /* SkGLDevice_FBO.cpp in Sources */,
|
||||
277836410FCF8908006549E4 /* SkGLTextCache.cpp in Sources */,
|
||||
277836420FCF8908006549E4 /* SkTextureCache.cpp in Sources */,
|
||||
27E1AAA70FD0C51B00098FC5 /* SampleVertices.cpp in Sources */,
|
||||
27E1AAE00FD0C9B500098FC5 /* SampleShaders.cpp in Sources */,
|
||||
27E1AB2B0FD0D06600098FC5 /* SamplePageFlip.cpp in Sources */,
|
||||
00A728490FD43E7600D5051F /* SampleMovie.cpp in Sources */,
|
||||
@ -652,6 +653,9 @@
|
||||
009611E90FD94A7E0053956C /* SampleAll.cpp in Sources */,
|
||||
27F9A4C90FDF4CE900C1CE9A /* SamplePatch.cpp in Sources */,
|
||||
27F9A4CC0FDF4D0300C1CE9A /* SamplePoints.cpp in Sources */,
|
||||
00AF77290FE15339007F9650 /* SkGLState.cpp in Sources */,
|
||||
00AF77540FE155BE007F9650 /* SampleVertices.cpp in Sources */,
|
||||
00AF77810FE19B56007F9650 /* SampleDrawLooper.cpp in Sources */,
|
||||
);
|
||||
runOnlyForDeploymentPostprocessing = 0;
|
||||
};
|
||||
|
||||
Loading…
Reference in New Issue
Block a user