bool snapshot () {
nosnapshot ();
if (! freeze ()) return false;
setPixelCoords (true);
glGenTextures (1, &snapshotTextureName);
int w = winWidth;
int h = winHeight;
if (! NPOT_textures) {
w = getNextPOT(winWidth);
h = getNextPOT(winHeight);
snapTexW = ((double)winWidth) / w;
snapTexH = ((double)winHeight) / h;
}
glBindTexture(GL_TEXTURE_2D, snapshotTextureName);
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
texImage2D (GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, 0, snapshotTextureName);
// Render scene
glDepthMask (GL_TRUE);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // Clear The Screen
glDepthMask (GL_FALSE);
drawBackDrop (); // Draw the room
drawZBuffer(cameraX, cameraY, false);
glEnable(GL_DEPTH_TEST);
drawPeople (); // Then add any moving characters...
glDisable(GL_DEPTH_TEST);
viewSpeech (); // ...and anything being said
drawStatusBar ();
// Copy Our ViewPort To The Texture
copyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, viewportOffsetX, viewportOffsetY, winWidth, winHeight, snapshotTextureName);
setPixelCoords (false);
unfreeze (false);
return true;
}
// Paste a scaled sprite onto the backdrop
void fixScaleSprite (int x, int y, sprite & single, const spritePalette & fontPal, onScreenPerson * thisPerson, int camX, int camY, bool mirror) {
float scale = thisPerson-> scale;
bool useZB = ! (thisPerson->extra & EXTRA_NOZB);
bool light = ! (thisPerson->extra & EXTRA_NOLITE);
if (scale <= 0.05) return;
float tx1 = (float)(single.tex_x) / fontPal.tex_w[single.texNum];
float ty1 = (float) 1.0/fontPal.tex_h[single.texNum];//0.0;
float tx2 = (float)(single.tex_x + single.width) / fontPal.tex_w[single.texNum];
float ty2 = (float)(single.height+1)/fontPal.tex_h[single.texNum];
int diffX = (int)(((float)single.width) * scale);
int diffY = (int)(((float)single.height) * scale);
int x1;
if (single.xhot < 0)
x1 = x - (int)((mirror ? (float) (single.width - single.xhot) : (float)(single.xhot+1) ) * scale);
else
x1 = x - (int)((mirror ? (float) (single.width - (single.xhot+1)) : (float)single.xhot ) * scale);
int y1 = y - (int)((single.yhot - thisPerson->floaty) * scale);
float spriteWidth = diffX;
float spriteHeight = diffY;
if (x1 < 0) diffX += x1;
if (y1 < 0) diffY += y1;
if (x1 + diffX > sceneWidth) diffX = sceneWidth - x1;
if (y1 + diffY > sceneHeight) diffY = sceneHeight - y1;
if (diffX < 0) return;
if (diffY < 0) return;
GLfloat z;
if (useZB && zBuffer.numPanels) {
int i;
for (i = 1; i<zBuffer.numPanels; i++) {
if (zBuffer.panel[i] >= y + cameraY) {
i--;
break;
}
}
z = 0.999 - (double) i * (1.0 / 128.0);
} else {
z = -0.5;
}
float ltx1, btx1;
float ltx2, btx2;
float lty1, bty1;
float lty2, bty2;
if (! NPOT_textures) {
ltx1 = lightMap.texW * x1 / sceneWidth;
ltx2 = lightMap.texW * (x1+spriteWidth) / sceneWidth;
lty1 = lightMap.texH * y1 / sceneHeight;
lty2 = lightMap.texH * (y1+spriteHeight) / sceneHeight;
btx1 = backdropTexW * x1 / sceneWidth;
btx2 = backdropTexW * (x1+spriteWidth) / sceneWidth;
bty1 = backdropTexH * y1 / sceneHeight;
bty2 = backdropTexH * (y1+spriteHeight) / sceneHeight;
} else {
btx1 = ltx1 = (float) x1 / sceneWidth;
btx2 = ltx2 = (float) (x1+spriteWidth) / sceneWidth;
bty1 = lty1 = (float) y1 / sceneHeight;
bty2 = lty2 = (float) (y1+spriteHeight) / sceneHeight;
}
const GLfloat ltexCoords[] = {
ltx1, lty1,
ltx2, lty1,
ltx1, lty2,
ltx2, lty2
};
const GLfloat btexCoords[] = {
btx1, bty1,
btx2, bty1,
btx1, bty2,
btx2, bty2
};
if (light && lightMap.data) {
if (lightMapMode == LIGHTMAPMODE_HOTSPOT) {
int lx=x+cameraX;
int ly=y+cameraY;
if (lx<0 || ly<0 || lx>=sceneWidth || ly>=sceneHeight) {
curLight[0] = curLight[1] = curLight[2] = 255;
} else {
GLubyte *target = lightMap.data + (ly*sceneWidth + lx)*4;
curLight[0] = target[0];
curLight[1] = target[1];
curLight[2] = target[2];
}
} else if (lightMapMode == LIGHTMAPMODE_PIXEL) {
curLight[0] = curLight[1] = curLight[2] = 255;
glActiveTexture(GL_TEXTURE1);
glBindTexture (GL_TEXTURE_2D, lightMap.name);
}
} else {
curLight[0] = curLight[1] = curLight[2] = 255;
}
glActiveTexture(GL_TEXTURE2);
glBindTexture (GL_TEXTURE_2D, backdropTextureName);
glActiveTexture(GL_TEXTURE0);
setPixelCoords (true);
GLfloat xoffset = 0.0f;
while (xoffset < diffX) {
int w = (diffX-xoffset < viewportWidth) ? (int) (diffX-xoffset) : viewportWidth;
GLfloat yoffset = 0.0f;
while (yoffset < diffY) {
int h = (diffY-yoffset< viewportHeight) ? (int) (diffY-yoffset) : viewportHeight;
// Render the scene - first the old backdrop (so that it'll show through when the z-buffer is active
//glTexEnvi (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
glBindTexture (GL_TEXTURE_2D, backdropTextureName);
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
const GLfloat vertices[] = {
-x1-xoffset, -y1-yoffset, 0.0f,
sceneWidth-x1-xoffset, -y1-yoffset, 0.0f,
-x1-xoffset, sceneHeight-y1-yoffset, 0.0f,
sceneWidth-x1-xoffset, sceneHeight-y1-yoffset, 0.0f
};
const GLfloat texCoords[] = {
0.0f, 0.0f,
backdropTexW, 0.0f,
0.0f, backdropTexH,
backdropTexW, backdropTexH
};
glUseProgram(shader.texture);
setPMVMatrix(shader.texture);
drawQuad(shader.texture, vertices, 1, texCoords);
// The z-buffer
if (useZB) {
glDepthMask (GL_TRUE);
glClear(GL_DEPTH_BUFFER_BIT);
drawZBuffer((int) (x1+xoffset+camX), (int) (y1+yoffset+camY), false);
glDepthMask (GL_FALSE);
glEnable(GL_DEPTH_TEST);
}
// Then the sprite
glUseProgram(shader.paste);
GLint uniform = glGetUniformLocation(shader.paste, "useLightTexture");
if (uniform >= 0) glUniform1i(uniform, light && lightMapMode == LIGHTMAPMODE_PIXEL && lightMap.data);
setPMVMatrix(shader.paste);
setDrawMode (thisPerson);
glBindTexture (GL_TEXTURE_2D, fontPal.tex_names[single.texNum]);
const GLfloat vertices2[] = {
-xoffset, -yoffset, z,
spriteWidth-xoffset, -yoffset, z,
-xoffset, spriteHeight-yoffset, z,
spriteWidth-xoffset, spriteHeight-yoffset, z
};
if (! mirror) {
GLfloat tx3 = tx1;
tx1 = tx2;
tx2 = tx3;
}
const GLfloat texCoords2[] = {
tx2, ty1,
tx1, ty1,
tx2, ty2,
tx1, ty2
};
drawQuad(shader.paste, vertices2, 3, texCoords2, ltexCoords, btexCoords);
setSecondaryColor(0., 0., 0., 1.);
//glDisable(GL_COLOR_SUM); FIXME: replace line?
// Copy Our ViewPort To The Texture
glUseProgram(0);
copyTexSubImage2D(GL_TEXTURE_2D, 0, (int) ((x1<0) ? xoffset: x1+xoffset), (int) ((y1<0) ? yoffset: y1+yoffset), (int) ((x1<0) ?viewportOffsetX-x1:viewportOffsetX), (int) ((y1<0) ?viewportOffsetY-y1:viewportOffsetY), w, h, backdropTextureName);
yoffset += viewportHeight;
}
xoffset += viewportWidth;
}
setPixelCoords (false);
glUseProgram(0);
}
void sludgeDisplay () {
#if defined(HAVE_GLES2)
#ifndef GL_DEPTH24_STENCIL8
#define GL_DEPTH24_STENCIL8 0x88F0
#endif
// create an FBO
static GLuint fbo = 0;
static GLuint fbo_tex = 0;
static GLuint fbo_rbo = 0;
static float fbo_tex_w, fbo_tex_h;
static GLuint fbo_shad, fbo_vert, fbo_frag;
if(fbo==0) {
// create FBO
int width = 1;
while (width<realWinWidth) width *= 2;
int height = 1;
while (height<realWinHeight) height *= 2;
glGenFramebuffers(1, &fbo);
glGenTextures(1, &fbo_tex);
glGenRenderbuffers(1, &fbo_rbo);
glBindTexture(GL_TEXTURE_2D, fbo_tex);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, 0);
glBindTexture(GL_TEXTURE_2D, 0);
glBindRenderbuffer(GL_RENDERBUFFER, fbo_rbo);
glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8, width, height);
glBindRenderbuffer(GL_RENDERBUFFER, 0);
glBindFramebuffer(GL_FRAMEBUFFER, fbo);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, fbo_tex, 0);
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, fbo_rbo);
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, fbo_rbo);
GLenum ret = glCheckFramebufferStatus(GL_FRAMEBUFFER);
printf("Screen is %dx%d, FBO(%dx%d) Status = 0x%04X\n", realWinWidth, realWinHeight, width, height, ret);
glBindFramebuffer(GL_FRAMEBUFFER, 0);
glBindFramebuffer(GL_FRAMEBUFFER, fbo);
fbo_tex_w = (float)realWinWidth / width;
fbo_tex_h = (float)realWinHeight / height;
// create shader for blitting the fbo...
const char _blit_vsh[] = " \n\t" \
"attribute highp vec2 aPosition; \n\t" \
"attribute highp vec2 aTexCoord; \n\t" \
"varying mediump vec2 vTexCoord; \n\t" \
"void main(){ \n\t" \
"gl_Position = vec4(aPosition.x, aPosition.y, 0.0, 1.0);\n\t" \
"vTexCoord = aTexCoord; \n\t" \
"} \n\t";
const char _blit_fsh[] = " \n\t" \
"uniform sampler2D uTex; \n\t" \
"varying mediump vec2 vTexCoord; \n\t" \
"void main(){ \n\t" \
"gl_FragColor = texture2D(uTex, vTexCoord); \n\t" \
"} \n\t";
GLint success;
fbo_frag = glCreateShader( GL_FRAGMENT_SHADER );
const char* src[1];
src[0] = _blit_fsh;
glShaderSource( fbo_frag, 1, src, NULL );
glCompileShader( fbo_frag );
glGetShaderiv( fbo_frag, GL_COMPILE_STATUS, &success );
if (!success)
{
printf("Failed to produce default fragment shader.\n");
}
fbo_vert = glCreateShader( GL_VERTEX_SHADER );
src[0] = _blit_vsh;
glShaderSource( fbo_vert, 1, src, NULL );
glCompileShader( fbo_vert );
glGetShaderiv( fbo_vert, GL_COMPILE_STATUS, &success );
if( !success )
{
printf( "Failed to produce default vertex shader.\n" );
}
fbo_shad = glCreateProgram();
glBindAttribLocation( fbo_shad, 0, "aPosition" );
glBindAttribLocation( fbo_shad, 1, "aTexCoord" );
glAttachShader( fbo_shad, fbo_frag );
glAttachShader( fbo_shad, fbo_vert );
glLinkProgram( fbo_shad );
glGetProgramiv( fbo_shad, GL_LINK_STATUS, &success );
if( !success )
{
printf( "Failed to link default program.\n" );
}
glUniform1i( glGetUniformLocation( fbo_shad, "uTex" ), 0 );
}
#endif
glDepthMask (GL_TRUE);
// glClearColor(0.5, 0.5, 1.0, 0.0);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // Clear The Screen
glDepthMask (GL_FALSE);
drawBackDrop (); // Draw the room
drawZBuffer(cameraX, cameraY, false);
glEnable(GL_DEPTH_TEST);
drawPeople (); // Then add any moving characters...
glDisable(GL_DEPTH_TEST);
viewSpeech (); // ...and anything being said
drawStatusBar ();
displayCursor ();
if (brightnessLevel < 255) fixBrightness (); // This is for transitionLevel special effects
glFlush();
#if !defined(HAVE_GLES2)
SDL_GL_SwapBuffers();
#else
if(fbo)
{
// blit the FBO now
glBindFramebuffer(GL_FRAMEBUFFER, 0);
GLuint old_prog;
glGetIntegerv(GL_CURRENT_PROGRAM, (GLint*)&old_prog);
glUseProgram(fbo_shad);
glViewport(0, 0, realWinWidth, realWinHeight);
const float vert[] =
{
-1.0, -1.0, +0.0, +0.0,
+1.0, -1.0, fbo_tex_w, +0.0,
-1.0, +1.0, +0.0, fbo_tex_h,
+1.0, +1.0, fbo_tex_w, fbo_tex_h
};
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, fbo_tex);
glEnableVertexAttribArray(0);
glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 4 * sizeof(float), (float*)vert);
glEnableVertexAttribArray(1);
glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 4 * sizeof(float), (float*)vert + 2);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
glBindTexture(GL_TEXTURE_2D, 0);
glUseProgram(old_prog);
glViewport (viewportOffsetX, viewportOffsetY, viewportWidth, viewportHeight);
}
EGL_SwapBuffers();
if(fbo)
{
// Rebind FBO now
glBindFramebuffer(GL_FRAMEBUFFER, fbo);
}
#endif
}