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optimize OpenGL backend -- use batch drawing; part 2 of #271

This commit is contained in:
Vadim Lopatin 2016-06-29 09:54:04 +03:00
parent 484ee4b60c
commit f7cfc10bba
1 changed files with 71 additions and 0 deletions
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71
src/dlangui/graphics/glsupport.d
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@ -883,6 +883,7 @@ final class GLSupport {
}
static immutable float Z_2D = -2.0f;
void drawSolidFillRect(Rect rc, uint color1, uint color2, uint color3, uint color4) {
Color[4] colors;
FillColor(color1, colors[0..1]);
@ -933,6 +934,76 @@ final class GLSupport {
}
}
void drawSolidFillRects(Rect[] rects, uint[] vertexColors) {
Color[] colors;
colors.length = vertexColors.length;
for (uint i = 0; i < vertexColors.length; i++)
FillColor(vertexColors[i], colors[i .. i + 1]);
float[] vertexArray;
vertexArray.assumeSafeAppend();
for (uint i = 0; i < rects.length; i++) {
Rect rc = rects[i];
float x0 = cast(float)(rc.left);
float y0 = cast(float)(bufferDy-rc.top);
float x1 = cast(float)(rc.right);
float y1 = cast(float)(bufferDy-rc.bottom);
// don't flip for framebuffer
if (currentFBO) {
y0 = cast(float)(rc.top);
y1 = cast(float)(rc.bottom);
}
float[3 * 4] vertices = [
x0,y0,Z_2D,
x0,y1,Z_2D,
x1,y0,Z_2D,
x1,y1,Z_2D];
vertexArray ~= vertices;
}
if (_legacyMode) {
static if (SUPPORT_LEGACY_OPENGL) {
int[] indexes;
indexes.assumeSafeAppend();
for (uint i = 0; i < rects.length; i++) {
indexes ~= i * 6 + 0;
indexes ~= i * 6 + 1;
indexes ~= i * 6 + 2;
indexes ~= i * 6 + 1;
indexes ~= i * 6 + 2;
indexes ~= i * 6 + 3;
}
glColor4f(1,1,1,1);
glDisable(GL_CULL_FACE);
glEnable(GL_BLEND);
glDisable(GL_ALPHA_TEST);
checkgl!glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
checkgl!glEnableClientState(GL_VERTEX_ARRAY);
checkgl!glEnableClientState(GL_COLOR_ARRAY);
checkgl!glVertexPointer(3, GL_FLOAT, 0, cast(void*)vertexArray.ptr);
checkgl!glColorPointer(4, GL_FLOAT, 0, cast(void*)colors.ptr);
checkgl!glIndexPointer(GL_INT, 0, cast(void*)indexes.ptr);
checkgl!glDrawArrays(GL_TRIANGLES, 0, cast(int)indexes.length);
glDisableClientState(GL_COLOR_ARRAY);
glDisableClientState(GL_VERTEX_ARRAY);
glDisable(GL_ALPHA_TEST);
glDisable(GL_BLEND);
}
} else {
if (_solidFillProgram !is null) {
_solidFillProgram.execute(vertexArray, cast(float[])colors);
} else
Log.e("No program");
}
}
void drawColorAndTextureRect(Tex2D texture, int tdx, int tdy, Rect srcrc, Rect dstrc, uint color, bool linear) {
drawColorAndTextureRect(texture, tdx, tdy, srcrc.left, srcrc.top, srcrc.width(), srcrc.height(), dstrc.left, dstrc.top, dstrc.width(), dstrc.height(), color, linear);
}