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-rw-r--r--libs/hwui/OpenGLRenderer.cpp107
1 files changed, 77 insertions, 30 deletions
diff --git a/libs/hwui/OpenGLRenderer.cpp b/libs/hwui/OpenGLRenderer.cpp
index e764778..305c8c5 100644
--- a/libs/hwui/OpenGLRenderer.cpp
+++ b/libs/hwui/OpenGLRenderer.cpp
@@ -40,34 +40,42 @@ namespace uirenderer {
// Globals
///////////////////////////////////////////////////////////////////////////////
-const SimpleVertex gDrawColorVertices[] = {
+static const SimpleVertex gDrawColorVertices[] = {
SV(0.0f, 0.0f),
SV(1.0f, 0.0f),
SV(0.0f, 1.0f),
SV(1.0f, 1.0f)
};
-const GLsizei gDrawColorVertexStride = sizeof(SimpleVertex);
-const GLsizei gDrawColorVertexCount = 4;
+static const GLsizei gDrawColorVertexStride = sizeof(SimpleVertex);
+static const GLsizei gDrawColorVertexCount = 4;
-TextureVertex gDrawTextureVertices[] = {
+// This array is never used directly but used as a memcpy source in the
+// OpenGLRenderer constructor
+static const TextureVertex gDrawTextureVertices[] = {
FV(0.0f, 0.0f, 0.0f, 1.0f),
FV(1.0f, 0.0f, 1.0f, 1.0f),
FV(0.0f, 1.0f, 0.0f, 0.0f),
FV(1.0f, 1.0f, 1.0f, 0.0f)
};
-const GLsizei gDrawTextureVertexStride = sizeof(TextureVertex);
-const GLsizei gDrawTextureVertexCount = 4;
-
-static inline void resetDrawTextureTexCoords(float u1, float v1, float u2, float v2) {
- gDrawTextureVertices[0].texture[0] = u1;
- gDrawTextureVertices[0].texture[1] = v2;
- gDrawTextureVertices[1].texture[0] = u2;
- gDrawTextureVertices[1].texture[1] = v2;
- gDrawTextureVertices[2].texture[0] = u1;
- gDrawTextureVertices[2].texture[1] = v1;
- gDrawTextureVertices[3].texture[0] = u2;
- gDrawTextureVertices[3].texture[1] = v1;
-}
+static const GLsizei gDrawTextureVertexStride = sizeof(TextureVertex);
+static const GLsizei gDrawTextureVertexCount = 4;
+
+// In this array, the index of each Blender equals the value of the first
+// entry. For instance, gBlends[1] == gBlends[SkXfermode::kSrc_Mode]
+static const Blender gBlends[] = {
+ { SkXfermode::kClear_Mode, GL_ZERO, GL_ZERO },
+ { SkXfermode::kSrc_Mode, GL_ONE, GL_ZERO },
+ { SkXfermode::kDst_Mode, GL_ZERO, GL_ONE },
+ { SkXfermode::kSrcOver_Mode, GL_ONE, GL_ONE_MINUS_SRC_ALPHA },
+ { SkXfermode::kDstOver_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ONE },
+ { SkXfermode::kSrcIn_Mode, GL_DST_ALPHA, GL_ZERO },
+ { SkXfermode::kDstIn_Mode, GL_ZERO, GL_SRC_ALPHA },
+ { SkXfermode::kSrcOut_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ZERO },
+ { SkXfermode::kDstOut_Mode, GL_ZERO, GL_ONE_MINUS_SRC_ALPHA },
+ { SkXfermode::kSrcATop_Mode, GL_DST_ALPHA, GL_ONE_MINUS_SRC_ALPHA },
+ { SkXfermode::kDstATop_Mode, GL_ONE_MINUS_DST_ALPHA, GL_SRC_ALPHA },
+ { SkXfermode::kXor_Mode, GL_ONE_MINUS_DST_ALPHA, GL_ONE_MINUS_SRC_ALPHA }
+};
///////////////////////////////////////////////////////////////////////////////
// Constructors/destructor
@@ -78,6 +86,8 @@ OpenGLRenderer::OpenGLRenderer() {
mDrawColorShader = new DrawColorProgram;
mDrawTextureShader = new DrawTextureProgram;
+
+ memcpy(mDrawTextureVertices, gDrawTextureVertices, sizeof(gDrawTextureVertices));
}
OpenGLRenderer::~OpenGLRenderer() {
@@ -336,22 +346,43 @@ bool OpenGLRenderer::clipRect(float left, float top, float right, float bottom)
///////////////////////////////////////////////////////////////////////////////
void OpenGLRenderer::drawColor(int color, SkXfermode::Mode mode) {
- // TODO: Set the transfer mode
const Rect& clip = mSnapshot->clipRect;
- drawColorRect(clip.left, clip.top, clip.right, clip.bottom, color);
+ drawColorRect(clip.left, clip.top, clip.right, clip.bottom, color, mode);
}
void OpenGLRenderer::drawRect(float left, float top, float right, float bottom, const SkPaint* p) {
- // TODO Support more than just color
- // TODO: Set the transfer mode
- drawColorRect(left, top, right, bottom, p->getColor());
+ SkXfermode::Mode mode;
+
+ const bool isMode = SkXfermode::IsMode(p->getXfermode(), &mode);
+ if (!isMode) {
+ // Assume SRC_OVER
+ mode = SkXfermode::kSrcOver_Mode;
+ }
+
+ // Skia draws using the color's alpha channel if < 255
+ // Otherwise, it uses the paint's alpha
+ int color = p->getColor();
+ if (((color >> 24) & 0xFF) == 255) {
+ color |= p->getAlpha() << 24;
+ }
+
+ drawColorRect(left, top, right, bottom, color, mode);
}
-void OpenGLRenderer::drawColorRect(float left, float top, float right, float bottom, int color) {
- GLfloat a = ((color >> 24) & 0xFF) / 255.0f;
- GLfloat r = ((color >> 16) & 0xFF) / 255.0f;
- GLfloat g = ((color >> 8) & 0xFF) / 255.0f;
- GLfloat b = ((color ) & 0xFF) / 255.0f;
+void OpenGLRenderer::drawColorRect(float left, float top, float right, float bottom,
+ int color, SkXfermode::Mode mode) {
+ const int alpha = (color >> 24) & 0xFF;
+ const bool blend = alpha < 255 || mode != SkXfermode::kSrcOver_Mode;
+
+ const GLfloat a = alpha / 255.0f;
+ const GLfloat r = ((color >> 16) & 0xFF) / 255.0f;
+ const GLfloat g = ((color >> 8) & 0xFF) / 255.0f;
+ const GLfloat b = ((color ) & 0xFF) / 255.0f;
+
+ if (blend) {
+ glEnable(GL_BLEND);
+ glBlendFunc(gBlends[mode].src, gBlends[mode].dst);
+ }
mModelView.loadTranslate(left, top, 0.0f);
mModelView.scale(right - left, bottom - top, 1.0f);
@@ -368,6 +399,10 @@ void OpenGLRenderer::drawColorRect(float left, float top, float right, float bot
glDrawArrays(GL_TRIANGLE_STRIP, 0, gDrawColorVertexCount);
glDisableVertexAttribArray(mDrawColorShader->position);
+
+ if (blend) {
+ glDisable(GL_BLEND);
+ }
}
void OpenGLRenderer::drawTextureRect(float left, float top, float right, float bottom,
@@ -379,15 +414,16 @@ void OpenGLRenderer::drawTextureRect(float left, float top, float right, float b
// TODO Correctly set the blend function, based on texture format and xfermode
glEnable(GL_BLEND);
- glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
+ // For not pre-multiplied sources
+ glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glBindTexture(GL_TEXTURE_2D, texture);
glActiveTexture(GL_TEXTURE0);
glUniform1i(mDrawTextureShader->sampler, 0);
- const GLvoid* p = &gDrawTextureVertices[0].position[0];
- const GLvoid* t = &gDrawTextureVertices[0].texture[0];
+ const GLvoid* p = &mDrawTextureVertices[0].position[0];
+ const GLvoid* t = &mDrawTextureVertices[0].texture[0];
glEnableVertexAttribArray(mDrawTextureShader->position);
glVertexAttribPointer(mDrawTextureShader->position, 2, GL_FLOAT, GL_FALSE,
@@ -408,5 +444,16 @@ void OpenGLRenderer::drawTextureRect(float left, float top, float right, float b
glDisable(GL_BLEND);
}
+void OpenGLRenderer::resetDrawTextureTexCoords(float u1, float v1, float u2, float v2) {
+ mDrawTextureVertices[0].texture[0] = u1;
+ mDrawTextureVertices[0].texture[1] = v2;
+ mDrawTextureVertices[1].texture[0] = u2;
+ mDrawTextureVertices[1].texture[1] = v2;
+ mDrawTextureVertices[2].texture[0] = u1;
+ mDrawTextureVertices[2].texture[1] = v1;
+ mDrawTextureVertices[3].texture[0] = u2;
+ mDrawTextureVertices[3].texture[1] = v1;
+}
+
}; // namespace uirenderer
}; // namespace android
generated by cgit v1.1 at 2025-11-27 20:05:11 +0000