summaryrefslogtreecommitdiff
path: root/src/render/modernopenglgraphics.cpp
diff options
context:
space:
mode:
authorAndrei Karas <akaras@inbox.ru>2014-06-09 22:11:31 +0300
committerAndrei Karas <akaras@inbox.ru>2014-06-10 12:56:53 +0300
commit61e9fc59323157bbd3ea024e816981b975d5b2c8 (patch)
treeaec9ac4d650b2949cde80a65d021ac7ab39a2fc9 /src/render/modernopenglgraphics.cpp
parent5fe5d3de3c570734d824afac4992a0d00386dbea (diff)
downloadmv-61e9fc59323157bbd3ea024e816981b975d5b2c8.tar.gz
mv-61e9fc59323157bbd3ea024e816981b975d5b2c8.tar.bz2
mv-61e9fc59323157bbd3ea024e816981b975d5b2c8.tar.xz
mv-61e9fc59323157bbd3ea024e816981b975d5b2c8.zip
Add basic texture drawing in modernopengl.
Diffstat (limited to 'src/render/modernopenglgraphics.cpp')
-rw-r--r--src/render/modernopenglgraphics.cpp154
1 files changed, 130 insertions, 24 deletions
diff --git a/src/render/modernopenglgraphics.cpp b/src/render/modernopenglgraphics.cpp
index 141b6ccc7..98e125170 100644
--- a/src/render/modernopenglgraphics.cpp
+++ b/src/render/modernopenglgraphics.cpp
@@ -56,6 +56,7 @@ ModernOpenGLGraphics::ModernOpenGLGraphics() :
mFloatTexArrayCached(nullptr),
mShortVertArrayCached(nullptr),
mSimpleProgram(nullptr),
+ mTextureProgram(nullptr),
mAlphaCached(1.0F),
mVpCached(0),
mTexture(false),
@@ -64,11 +65,16 @@ ModernOpenGLGraphics::ModernOpenGLGraphics() :
mImageCached(0),
mFloatColor(1.0F),
mMaxVertices(500),
- mSimpleId(0U),
- mSimpleColor(0U),
- mSimplePos(0),
- mScreenUniform(0U),
+ mSimpleProgramId(0U),
+ mTextureProgramId(0U),
+ mSimpleColorUniform(0U),
+ mSimplePosAttrib(0),
+ mTexturePosAttrib(0),
+ mTexAttrib(0),
+ mSimpleScreenUniform(0U),
+ mTextureScreenUniform(0U),
mColorAlpha(false),
+ mTextureDraw(false),
#ifdef DEBUG_BIND_TEXTURE
mOldTexture(),
mOldTextureId(0),
@@ -111,15 +117,22 @@ void ModernOpenGLGraphics::postInit()
{
logger->log("Compiling shaders");
mSimpleProgram = shaders.getSimpleProgram();
- mSimpleId = mSimpleProgram->getProgramId();
- if (mSimpleProgram)
+ mSimpleProgramId = mSimpleProgram->getProgramId();
+ mTextureProgram = shaders.getTextureProgram();
+ mTextureProgramId = mTextureProgram->getProgramId();
+ if (mSimpleProgram && mTextureProgram)
{
logger->log("Shaders compilation done.");
- mglUseProgram(mSimpleId);
- mSimplePos = mglGetAttribLocation(mSimpleId, "simplePos");
- mglEnableVertexAttribArray(mSimplePos);
- mSimpleColor = mglGetUniformLocation(mSimpleId, "simpleColor");
- mScreenUniform = mglGetUniformLocation(mSimpleId, "screen");
+ mglUseProgram(mSimpleProgramId);
+ mSimplePosAttrib = mglGetAttribLocation(mSimpleProgramId, "simplePos");
+ mglEnableVertexAttribArray(mSimplePosAttrib);
+ mSimpleColorUniform = mglGetUniformLocation(mSimpleProgramId, "simpleColor");
+ mSimpleScreenUniform = mglGetUniformLocation(mSimpleProgramId, "screen");
+
+ mTexturePosAttrib = mglGetAttribLocation(mTextureProgramId, "texturePos");
+ mTexAttrib = mglGetAttribLocation(mTextureProgramId, "texcoord");
+ mTextureScreenUniform = mglGetUniformLocation(mTextureProgramId, "screen");
+
screenResized();
}
else
@@ -130,7 +143,10 @@ void ModernOpenGLGraphics::postInit()
void ModernOpenGLGraphics::screenResized()
{
- mglUniform2f(mScreenUniform,
+ mglUniform2f(mSimpleScreenUniform,
+ static_cast<float>(mWidth) / 2.0f,
+ static_cast<float>(mHeight) / 2.0f);
+ mglUniform2f(mTextureScreenUniform,
static_cast<float>(mWidth) / 2.0f,
static_cast<float>(mHeight) / 2.0f);
}
@@ -178,7 +194,7 @@ void ModernOpenGLGraphics::setColorAll(const Color &color,
mColorAlpha = (color.a != 255);
if (mColorAlpha)
{
- mglUniform4f(mSimpleColor,
+ mglUniform4f(mSimpleColorUniform,
static_cast<float>(color.r) / 255.0F,
static_cast<float>(color.g) / 255.0F,
static_cast<float>(color.b) / 255.0F,
@@ -186,7 +202,7 @@ void ModernOpenGLGraphics::setColorAll(const Color &color,
}
else
{
- mglUniform4f(mSimpleColor,
+ mglUniform4f(mSimpleColorUniform,
static_cast<float>(color.r) / 255.0F,
static_cast<float>(color.g) / 255.0F,
static_cast<float>(color.b) / 255.0F,
@@ -194,11 +210,62 @@ void ModernOpenGLGraphics::setColorAll(const Color &color,
}
}
-static inline void drawQuad(const Image *const image,
- const int srcX, const int srcY,
- const int dstX, const int dstY,
- const int width, const int height)
+void ModernOpenGLGraphics::setColorAlpha(const float alpha)
{
+ // here need set alpha uniform for textures only
+/*
+ if (!mIsByteColor && mFloatColor == alpha)
+ return;
+
+ glColor4f(1.0F, 1.0F, 1.0F, alpha);
+ mIsByteColor = false;
+ mFloatColor = alpha;
+*/
+}
+
+void ModernOpenGLGraphics::drawQuad(const Image *const image,
+ const int srcX, const int srcY,
+ const int dstX, const int dstY,
+ const int width, const int height)
+{
+
+ const float tw = static_cast<float>(image->mTexWidth);
+ const float th = static_cast<float>(image->mTexHeight);
+ // Find OpenGL normalized texture coordinates.
+ const float texX1 = static_cast<float>(srcX) / tw;
+ const float texY1 = static_cast<float>(srcY) / th;
+ const float texX2 = static_cast<float>(srcX + width) / tw;
+ const float texY2 = static_cast<float>(srcY + height) / th;
+ const float x1 = static_cast<GLfloat>(dstX);
+ const float y1 = static_cast<GLfloat>(dstY);
+ const float x2 = x1 + static_cast<GLfloat>(width);
+ const float y2 = y1 + static_cast<GLfloat>(height);
+
+ GLfloat vertices[] =
+ {
+ x1, y1, texX1, texY1,
+ x2, y1, texX2, texY1,
+ x1, y2, texX1, texY2,
+ x2, y2, texX2, texY2
+ };
+
+ GLuint vbo;
+ mglGenBuffers(1, &vbo);
+ mglBindBuffer(GL_ARRAY_BUFFER, vbo);
+ mglBufferData(GL_ARRAY_BUFFER, sizeof(vertices),
+ vertices, GL_DYNAMIC_DRAW);
+
+// mglEnableVertexAttribArray(mTexturePosAttrib);
+ mglVertexAttribPointer(mTexturePosAttrib, 2, GL_FLOAT, GL_FALSE,
+ 4 * sizeof(GLfloat), 0);
+// mglEnableVertexAttribArray(mTexAttrib);
+ mglVertexAttribPointer(mTexAttrib, 2, GL_FLOAT, GL_FALSE,
+ 4 * sizeof(GLfloat), (void*)(2 * sizeof(GLfloat)));
+
+#ifdef DEBUG_DRAW_CALLS
+ MobileOpenGLGraphics::mDrawCalls ++;
+#endif
+ glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
}
static inline void drawRescaledQuad(const Image *const image,
@@ -219,6 +286,20 @@ bool ModernOpenGLGraphics::drawImage(const Image *const image,
bool ModernOpenGLGraphics::drawImageInline(const Image *const image,
int dstX, int dstY)
{
+ FUNC_BLOCK("Graphics::drawImage", 1)
+ if (!image)
+ return false;
+
+ setColorAlpha(image->mAlpha);
+#ifdef DEBUG_BIND_TEXTURE
+ debugBindTexture(image);
+#endif
+ bindTexture(GL_TEXTURE_2D, image->mGLImage);
+ setTexturingAndBlending(true);
+
+ const SDL_Rect &imageRect = image->mBounds;
+ drawQuad(image, imageRect.x, imageRect.y,
+ dstX, dstY, imageRect.w, imageRect.h);
return true;
}
@@ -542,11 +623,10 @@ void ModernOpenGLGraphics::drawRectangle(const Rect& rect)
mglBindBuffer(GL_ARRAY_BUFFER, vbo);
mglBufferData(GL_ARRAY_BUFFER, sizeof(vertices),
vertices, GL_DYNAMIC_DRAW);
-// mglEnableVertexAttribArray(mSimplePos);
- mglVertexAttribPointer(mSimplePos, 2, GL_FLOAT, GL_FALSE, 0, 0);
+// mglEnableVertexAttribArray(mSimplePosAttrib);
+ mglVertexAttribPointer(mSimplePosAttrib, 2, GL_FLOAT, GL_FALSE, 0, 0);
glDrawArrays(GL_LINE_LOOP, 0, 4);
- updateScreen();
mglDeleteBuffers(1, &vbo);
}
@@ -571,11 +651,10 @@ void ModernOpenGLGraphics::fillRectangle(const Rect& rect)
mglBindBuffer(GL_ARRAY_BUFFER, vbo);
mglBufferData(GL_ARRAY_BUFFER, sizeof(vertices),
vertices, GL_DYNAMIC_DRAW);
-// mglEnableVertexAttribArray(mSimplePos);
- mglVertexAttribPointer(mSimplePos, 2, GL_FLOAT, GL_FALSE, 0, 0);
+// mglEnableVertexAttribArray(mSimplePosAttrib);
+ mglVertexAttribPointer(mSimplePosAttrib, 2, GL_FLOAT, GL_FALSE, 0, 0);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
- updateScreen();
mglDeleteBuffers(1, &vbo);
}
@@ -584,6 +663,17 @@ void ModernOpenGLGraphics::setTexturingAndBlending(const bool enable)
{
if (enable)
{
+ if (!mTextureDraw)
+ {
+ mTextureDraw = true;
+ mglDisableVertexAttribArray(mSimplePosAttrib);
+ mglUseProgram(mTextureProgramId);
+ mglEnableVertexAttribArray(mTexturePosAttrib);
+ mglEnableVertexAttribArray(mTexAttrib);
+ mglUniform2f(mTextureScreenUniform,
+ static_cast<float>(mWidth) / 2.0f,
+ static_cast<float>(mHeight) / 2.0f);
+ }
if (!mAlpha)
{
glEnable(GL_BLEND);
@@ -592,6 +682,22 @@ void ModernOpenGLGraphics::setTexturingAndBlending(const bool enable)
}
else
{
+ if (mTextureDraw)
+ {
+ mTextureDraw = false;
+ mglDisableVertexAttribArray(mTexturePosAttrib);
+ mglDisableVertexAttribArray(mTexAttrib);
+ mglUseProgram(mSimpleProgramId);
+ mglEnableVertexAttribArray(mSimplePosAttrib);
+ mglUniform2f(mSimpleScreenUniform,
+ static_cast<float>(mWidth) / 2.0f,
+ static_cast<float>(mHeight) / 2.0f);
+ mglUniform4f(mSimpleColorUniform,
+ static_cast<float>(mColor.r) / 255.0F,
+ static_cast<float>(mColor.g) / 255.0F,
+ static_cast<float>(mColor.b) / 255.0F,
+ static_cast<float>(mColor.a) / 255.0F);
+ }
if (mAlpha && !mColorAlpha)
{
glDisable(GL_BLEND);