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flycast/core/rend/gl4/gldraw.cpp

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#include "gl4.h"
#include "rend/gles/glcache.h"
#include "rend/tileclip.h"
/*
Drawing and related state management
Takes vertex, textures and renders to the currently set up target
*/
static gl4PipelineShader* CurrentShader;
extern u32 gcflip;
GLuint geom_fbo;
GLuint stencilTexId;
GLuint opaqueTexId;
GLuint depthTexId;
GLuint texSamplers[2];
GLuint depth_fbo;
GLuint depthSaveTexId;
static gl4PipelineShader *gl4GetProgram(bool cp_AlphaTest, bool pp_InsideClipping,
bool pp_Texture, bool pp_UseAlpha, bool pp_IgnoreTexA, u32 pp_ShadInstr, bool pp_Offset,
u32 pp_FogCtrl, bool pp_TwoVolumes, bool pp_Gouraud, bool pp_BumpMap, bool fog_clamping,
bool palette, Pass pass)
{
u32 rv=0;
rv |= pp_InsideClipping;
rv <<= 1; rv |= cp_AlphaTest;
rv <<= 1; rv |= pp_Texture;
rv <<= 1; rv |= pp_UseAlpha;
rv <<= 1; rv |= pp_IgnoreTexA;
rv <<= 2; rv |= pp_ShadInstr;
rv <<= 1; rv |= pp_Offset;
rv <<= 2; rv |= pp_FogCtrl;
rv <<= 1; rv |= pp_TwoVolumes;
rv <<= 1; rv |= pp_Gouraud;
rv <<= 1; rv |= pp_BumpMap;
rv <<= 1; rv |= fog_clamping;
rv <<= 1; rv |= palette;
rv <<= 2; rv |= (int)pass;
gl4PipelineShader *shader = &gl4.shaders[rv];
if (shader->program == 0)
{
shader->cp_AlphaTest = cp_AlphaTest;
shader->pp_InsideClipping = pp_InsideClipping;
shader->pp_Texture = pp_Texture;
shader->pp_UseAlpha = pp_UseAlpha;
shader->pp_IgnoreTexA = pp_IgnoreTexA;
shader->pp_ShadInstr = pp_ShadInstr;
shader->pp_Offset = pp_Offset;
shader->pp_FogCtrl = pp_FogCtrl;
shader->pp_TwoVolumes = pp_TwoVolumes;
shader->pp_Gouraud = pp_Gouraud;
shader->pp_BumpMap = pp_BumpMap;
shader->fog_clamping = fog_clamping;
shader->palette = palette;
shader->pass = pass;
gl4CompilePipelineShader(shader);
}
return shader;
}
static void SetTextureRepeatMode(int index, GLuint dir, u32 clamp, u32 mirror)
{
if (clamp)
glSamplerParameteri(texSamplers[index], dir, GL_CLAMP_TO_EDGE);
else
glSamplerParameteri(texSamplers[index], dir, mirror ? GL_MIRRORED_REPEAT : GL_REPEAT);
}
static void SetBaseClipping()
{
if (gl4ShaderUniforms.base_clipping.enabled)
{
glcache.Enable(GL_SCISSOR_TEST);
glcache.Scissor(gl4ShaderUniforms.base_clipping.x, gl4ShaderUniforms.base_clipping.y, gl4ShaderUniforms.base_clipping.width, gl4ShaderUniforms.base_clipping.height);
}
else
glcache.Disable(GL_SCISSOR_TEST);
}
template <u32 Type, bool SortingEnabled, Pass pass>
static void SetGPState(const PolyParam* gp)
{
// Trilinear filtering. Ignore if texture isn't mipmapped (shenmue snowflakes)
if (gp->pcw.Texture && gp->tsp.FilterMode > 1 && Type != ListType_Punch_Through && gp->tcw.MipMapped == 1)
{
gl4ShaderUniforms.trilinear_alpha = 0.25 * (gp->tsp.MipMapD & 0x3);
if (gp->tsp.FilterMode == 2)
// Trilinear pass A
gl4ShaderUniforms.trilinear_alpha = 1.0 - gl4ShaderUniforms.trilinear_alpha;
}
else
gl4ShaderUniforms.trilinear_alpha = 1.0;
int clip_rect[4] = {};
TileClipping clipmode = GetTileClip(gp->tileclip, ViewportMatrix, clip_rect);
bool palette = false;
if (pass == Pass::Depth)
{
CurrentShader = gl4GetProgram(Type == ListType_Punch_Through ? 1 : 0,
clipmode == TileClipping::Inside,
Type == ListType_Punch_Through ? gp->pcw.Texture : 0,
1,
gp->tsp.IgnoreTexA,
0,
0,
2,
false, // TODO Can PT have two different textures for area 0 and 1 ??
false,
false,
false,
false,
pass);
}
else
{
// Two volumes mode only supported for OP and PT
bool two_volumes_mode = (gp->tsp1.full != (u32)-1) && Type != ListType_Translucent;
bool color_clamp = gp->tsp.ColorClamp && (pvrrc.fog_clamp_min != 0 || pvrrc.fog_clamp_max != 0xffffffff);
int fog_ctrl = settings.rend.Fog ? gp->tsp.FogCtrl : 2;
palette = BaseTextureCacheData::IsGpuHandledPaletted(gp->tsp, gp->tcw);
CurrentShader = gl4GetProgram(Type == ListType_Punch_Through ? 1 : 0,
clipmode == TileClipping::Inside,
gp->pcw.Texture,
gp->tsp.UseAlpha,
gp->tsp.IgnoreTexA,
gp->tsp.ShadInstr,
gp->pcw.Offset,
fog_ctrl,
two_volumes_mode,
gp->pcw.Gouraud,
gp->tcw.PixelFmt == PixelBumpMap,
color_clamp,
palette,
pass);
}
glcache.UseProgram(CurrentShader->program);
if (palette)
{
if (gp->tcw.PixelFmt == PixelPal4)
gl4ShaderUniforms.palette_index = gp->tcw.PalSelect << 4;
else
gl4ShaderUniforms.palette_index = (gp->tcw.PalSelect >> 4) << 8;
}
gl4ShaderUniforms.tsp0 = gp->tsp;
gl4ShaderUniforms.tsp1 = gp->tsp1;
gl4ShaderUniforms.tcw0 = gp->tcw;
gl4ShaderUniforms.tcw1 = gp->tcw1;
gl4ShaderUniforms.Set(CurrentShader);
if (pass == Pass::Color && (Type == ListType_Translucent || Type == ListType_Punch_Through))
{
glcache.Enable(GL_BLEND);
glcache.BlendFunc(SrcBlendGL[gp->tsp.SrcInstr], DstBlendGL[gp->tsp.DstInstr]);
}
else
glcache.Disable(GL_BLEND);
if (clipmode == TileClipping::Inside)
glUniform4f(CurrentShader->pp_ClipTest, clip_rect[0], clip_rect[1], clip_rect[0] + clip_rect[2], clip_rect[1] + clip_rect[3]);
if (clipmode == TileClipping::Outside)
{
glcache.Enable(GL_SCISSOR_TEST);
glcache.Scissor(clip_rect[0], clip_rect[1], clip_rect[2], clip_rect[3]);
}
else
SetBaseClipping();
// This bit controls which pixels are affected by modvols
const u32 stencil = gp->pcw.Shadow != 0 ? 0x80 : 0x0;
glcache.StencilFunc(GL_ALWAYS, stencil, stencil);
if (CurrentShader->pp_Texture)
{
for (int i = 0; i < 2; i++)
{
glActiveTexture(GL_TEXTURE0 + i);
GLuint texid = (GLuint)(i == 0 ? gp->texid : gp->texid1);
glBindTexture(GL_TEXTURE_2D, texid == (GLuint)-1 ? 0 : texid);
if (texid != (GLuint)-1)
{
TSP tsp = i == 0 ? gp->tsp : gp->tsp1;
glBindSampler(i, texSamplers[i]);
SetTextureRepeatMode(i, GL_TEXTURE_WRAP_S, tsp.ClampU, tsp.FlipU);
SetTextureRepeatMode(i, GL_TEXTURE_WRAP_T, tsp.ClampV, tsp.FlipV);
//set texture filter mode
if (tsp.FilterMode == 0)
{
//disable filtering, mipmaps
glSamplerParameteri(texSamplers[i], GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glSamplerParameteri(texSamplers[i], GL_TEXTURE_MAG_FILTER, GL_NEAREST);
}
else
{
//bilinear filtering
//PowerVR supports also trilinear via two passes, but we ignore that for now
bool mipmapped = gp->tcw.MipMapped != 0 && gp->tcw.ScanOrder == 0 && settings.rend.UseMipmaps;
glSamplerParameteri(texSamplers[i], GL_TEXTURE_MIN_FILTER, mipmapped ? GL_LINEAR_MIPMAP_LINEAR : GL_LINEAR);
glSamplerParameteri(texSamplers[i], GL_TEXTURE_MAG_FILTER, GL_LINEAR);
if (mipmapped)
glSamplerParameterf(texSamplers[i], GL_TEXTURE_LOD_BIAS, D_Adjust_LoD_Bias[tsp.MipMapD]);
}
}
}
glActiveTexture(GL_TEXTURE0);
}
//set cull mode !
//cflip is required when exploding triangles for triangle sorting
//gcflip is global clip flip, needed for when rendering to texture due to mirrored Y direction
SetCull(gp->isp.CullMode ^ gcflip);
//set Z mode, only if required
if (Type == ListType_Punch_Through || (pass == Pass::Depth && SortingEnabled))
{
glcache.DepthFunc(GL_GEQUAL);
}
else if (Type == ListType_Opaque || (Type == ListType_Translucent && !SortingEnabled))
{
glcache.DepthFunc(Zfunction[gp->isp.DepthMode]);
}
if (pass == Pass::Depth || pass == Pass::Color)
{
// Z Write Disable seems to be ignored for punch-through polys
// Fixes Worms World Party, Bust-a-Move 4 and Re-Volt
if (Type == ListType_Punch_Through)
glcache.DepthMask(GL_TRUE);
else
glcache.DepthMask(!gp->isp.ZWriteDis);
}
else
glcache.DepthMask(GL_FALSE);
}
template <u32 Type, bool SortingEnabled, Pass pass>
static void DrawList(const List<PolyParam>& gply, int first, int count)
{
PolyParam* params = &gply.head()[first];
if (count == 0)
return;
while (count-- > 0)
{
if (params->count > 2)
{
if ((Type == ListType_Opaque || (Type == ListType_Translucent && !SortingEnabled)) && params->isp.DepthMode == 0)
{
// depthFunc = never
params++;
continue;
}
if (pass == Pass::OIT && Type == ListType_Translucent && params->tsp.SrcInstr == 0 && params->tsp.DstInstr == 1)
{
// dst = dst
params++;
continue;
}
gl4ShaderUniforms.poly_number = params - gply.head();
SetGPState<Type, SortingEnabled, pass>(params);
glDrawElements(GL_TRIANGLE_STRIP, params->count, GL_UNSIGNED_INT, (GLvoid*)(sizeof(u32) * params->first)); glCheck();
}
params++;
}
}
void gl4SetupMainVBO()
{
glBindVertexArray(gl4.vbo.main_vao);
glBindBuffer(GL_ARRAY_BUFFER, gl4.vbo.geometry); glCheck();
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, gl4.vbo.idxs); glCheck();
//setup vertex buffers attrib pointers
glEnableVertexAttribArray(VERTEX_POS_ARRAY); glCheck();
glVertexAttribPointer(VERTEX_POS_ARRAY, 3, GL_FLOAT, GL_FALSE, sizeof(Vertex), (void*)offsetof(Vertex,x)); glCheck();
glEnableVertexAttribArray(VERTEX_COL_BASE_ARRAY); glCheck();
glVertexAttribPointer(VERTEX_COL_BASE_ARRAY, 4, GL_UNSIGNED_BYTE, GL_TRUE, sizeof(Vertex), (void*)offsetof(Vertex,col)); glCheck();
glEnableVertexAttribArray(VERTEX_COL_OFFS_ARRAY); glCheck();
glVertexAttribPointer(VERTEX_COL_OFFS_ARRAY, 4, GL_UNSIGNED_BYTE, GL_TRUE, sizeof(Vertex), (void*)offsetof(Vertex,spc)); glCheck();
glEnableVertexAttribArray(VERTEX_UV_ARRAY); glCheck();
glVertexAttribPointer(VERTEX_UV_ARRAY, 2, GL_FLOAT, GL_FALSE, sizeof(Vertex), (void*)offsetof(Vertex,u)); glCheck();
glEnableVertexAttribArray(VERTEX_COL_BASE1_ARRAY); glCheck();
glVertexAttribPointer(VERTEX_COL_BASE1_ARRAY, 4, GL_UNSIGNED_BYTE, GL_TRUE, sizeof(Vertex), (void*)offsetof(Vertex, col1)); glCheck();
glEnableVertexAttribArray(VERTEX_COL_OFFS1_ARRAY); glCheck();
glVertexAttribPointer(VERTEX_COL_OFFS1_ARRAY, 4, GL_UNSIGNED_BYTE, GL_TRUE, sizeof(Vertex), (void*)offsetof(Vertex, spc1)); glCheck();
glEnableVertexAttribArray(VERTEX_UV1_ARRAY); glCheck();
glVertexAttribPointer(VERTEX_UV1_ARRAY, 2, GL_FLOAT, GL_FALSE, sizeof(Vertex), (void*)offsetof(Vertex, u1)); glCheck();
}
void gl4SetupModvolVBO()
{
glBindVertexArray(gl4.vbo.modvol_vao);
glBindBuffer(GL_ARRAY_BUFFER, gl4.vbo.modvols); glCheck();
//setup vertex buffers attrib pointers
glEnableVertexAttribArray(VERTEX_POS_ARRAY); glCheck();
glVertexAttribPointer(VERTEX_POS_ARRAY, 3, GL_FLOAT, GL_FALSE, sizeof(float)*3, (void*)0); glCheck();
}
static void DrawModVols(int first, int count)
{
if (count == 0 || pvrrc.modtrig.used() == 0)
return;
glBindVertexArray(gl4.vbo.modvol_vao);
glcache.Disable(GL_BLEND);
SetBaseClipping();
glcache.UseProgram(gl4.modvol_shader.program);
glcache.Enable(GL_DEPTH_TEST);
glcache.DepthMask(GL_FALSE);
glcache.DepthFunc(GL_GREATER);
glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
ModifierVolumeParam* params = &pvrrc.global_param_mvo.head()[first];
int mod_base = -1;
for (int cmv = 0; cmv < count; cmv++)
{
ModifierVolumeParam& param = params[cmv];
if (param.count == 0)
continue;
u32 mv_mode = param.isp.DepthMode;
if (mod_base == -1)
mod_base = param.first;
if (!param.isp.VolumeLast && mv_mode > 0)
SetMVS_Mode(Or, param.isp); // OR'ing (open volume or quad)
else
SetMVS_Mode(Xor, param.isp); // XOR'ing (closed volume)
glDrawArrays(GL_TRIANGLES, param.first * 3, param.count * 3);
if (mv_mode == 1 || mv_mode == 2)
{
// Sum the area
SetMVS_Mode(mv_mode == 1 ? Inclusion : Exclusion, param.isp);
glDrawArrays(GL_TRIANGLES, mod_base * 3, (param.first + param.count - mod_base) * 3);
mod_base = -1;
}
}
//restore states
glBindVertexArray(gl4.vbo.main_vao);
glcache.Enable(GL_DEPTH_TEST);
glcache.DepthMask(GL_TRUE);
}
void renderABuffer();
void DrawTranslucentModVols(int first, int count);
void checkOverflowAndReset();
static GLuint CreateColorFBOTexture(int width, int height)
{
GLuint texId = glcache.GenTexture();
glcache.BindTexture(GL_TEXTURE_2D, texId);
glcache.TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glcache.TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texId, 0);
glCheck();
return texId;
}
void gl4CreateTextures(int width, int height)
{
if (geom_fbo == 0)
{
glGenFramebuffers(1, &geom_fbo);
}
glBindFramebuffer(GL_FRAMEBUFFER, geom_fbo);
stencilTexId = glcache.GenTexture();
glBindTexture(GL_TEXTURE_2D, stencilTexId); glCheck();
glTexParameteri(GL_TEXTURE_2D, GL_DEPTH_STENCIL_TEXTURE_MODE, GL_STENCIL_INDEX); // OpenGL >= 4.3
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
// Using glTexStorage2D instead of glTexImage2D to satisfy requirement GL_TEXTURE_IMMUTABLE_FORMAT=true, needed for glTextureView below
glTexStorage2D(GL_TEXTURE_2D, 1, GL_DEPTH32F_STENCIL8, width, height);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_TEXTURE_2D, stencilTexId, 0); glCheck();
glCheck();
opaqueTexId = CreateColorFBOTexture(width, height);
depthTexId = glcache.GenTexture();
glTextureView(depthTexId, GL_TEXTURE_2D, stencilTexId, GL_DEPTH32F_STENCIL8, 0, 1, 0, 1);
glCheck();
glBindTexture(GL_TEXTURE_2D, depthTexId);
glTexParameteri(GL_TEXTURE_2D, GL_DEPTH_STENCIL_TEXTURE_MODE, GL_DEPTH_COMPONENT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glCheck();
GLuint uStatus = glCheckFramebufferStatus(GL_FRAMEBUFFER);
verify(uStatus == GL_FRAMEBUFFER_COMPLETE);
}
void gl4DrawStrips(GLuint output_fbo, int width, int height)
{
checkOverflowAndReset();
glBindFramebuffer(GL_FRAMEBUFFER, geom_fbo);
if (texSamplers[0] == 0)
glGenSamplers(2, texSamplers);
glcache.DepthMask(GL_TRUE);
glClearDepthf(0.0);
glStencilMask(0xFF);
glClear(GL_STENCIL_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); glCheck();
//Draw the strips !
//We use sampler 0
glActiveTexture(GL_TEXTURE0);
glProvokingVertex(GL_LAST_VERTEX_CONVENTION);
RenderPass previous_pass = {};
int render_pass_count = pvrrc.render_passes.used();
for (int render_pass = 0; render_pass < render_pass_count; render_pass++)
{
const RenderPass& current_pass = pvrrc.render_passes.head()[render_pass];
// Check if we can skip this pass, in part or completely, in case nothing is drawn (Cosmic Smash)
bool skip_op_pt = true;
bool skip_tr = true;
for (u32 j = previous_pass.op_count; skip_op_pt && j < current_pass.op_count; j++)
{
if (pvrrc.global_param_op.head()[j].count > 2)
skip_op_pt = false;
}
for (u32 j = previous_pass.pt_count; skip_op_pt && j < current_pass.pt_count; j++)
{
if (pvrrc.global_param_pt.head()[j].count > 2)
skip_op_pt = false;
}
for (u32 j = previous_pass.tr_count; skip_tr && j < current_pass.tr_count; j++)
{
if (pvrrc.global_param_tr.head()[j].count > 2)
skip_tr = false;
}
if (skip_op_pt && skip_tr)
{
previous_pass = current_pass;
continue;
}
DEBUG_LOG(RENDERER, "Render pass %d/%d OP %d PT %d TR %d autosort %d", render_pass + 1, render_pass_count,
current_pass.op_count - previous_pass.op_count,
current_pass.pt_count - previous_pass.pt_count,
current_pass.tr_count - previous_pass.tr_count,
current_pass.autosort);
glBindVertexArray(gl4.vbo.main_vao);
if (!skip_op_pt)
{
//
// PASS 1: Geometry pass to update depth and stencil
//
if (render_pass > 0)
{
// Make a copy of the depth buffer that will be reused in pass 2
if (depth_fbo == 0)
glGenFramebuffers(1, &depth_fbo);
glBindFramebuffer(GL_FRAMEBUFFER, depth_fbo);
if (depthSaveTexId == 0)
{
depthSaveTexId = glcache.GenTexture();
glBindTexture(GL_TEXTURE_2D, depthSaveTexId);
glTexParameteri(GL_TEXTURE_2D, GL_DEPTH_STENCIL_TEXTURE_MODE, GL_DEPTH_COMPONENT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH32F_STENCIL8, max_image_width, max_image_height, 0, GL_DEPTH_STENCIL, GL_FLOAT_32_UNSIGNED_INT_24_8_REV, NULL); glCheck();
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_TEXTURE_2D, depthSaveTexId, 0); glCheck();
}
GLuint uStatus = glCheckFramebufferStatus(GL_FRAMEBUFFER);
verify(uStatus == GL_FRAMEBUFFER_COMPLETE);
glBindFramebuffer(GL_READ_FRAMEBUFFER, geom_fbo);
glBlitFramebuffer(0, 0, width, height, 0, 0, width, height, GL_DEPTH_BUFFER_BIT, GL_NEAREST);
glCheck();
glBindFramebuffer(GL_FRAMEBUFFER, geom_fbo);
}
glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
glcache.Enable(GL_DEPTH_TEST);
glcache.DepthMask(GL_TRUE);
glcache.Enable(GL_STENCIL_TEST);
glcache.StencilOp(GL_KEEP, GL_KEEP, GL_REPLACE);
DrawList<ListType_Opaque, false, Pass::Depth>(pvrrc.global_param_op, previous_pass.op_count, current_pass.op_count - previous_pass.op_count);
DrawList<ListType_Punch_Through, false, Pass::Depth>(pvrrc.global_param_pt, previous_pass.pt_count, current_pass.pt_count - previous_pass.pt_count);
// Modifier volumes
if (settings.rend.ModifierVolumes)
DrawModVols(previous_pass.mvo_count, current_pass.mvo_count - previous_pass.mvo_count);
//
// PASS 2: Render OP and PT to fbo
//
if (render_pass == 0)
{
glcache.DepthMask(GL_TRUE);
glClearDepthf(0.0);
glClear(GL_DEPTH_BUFFER_BIT);
}
else
{
// Restore the depth buffer from the last render pass
// FIXME This is pretty slow apparently (CS)
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, geom_fbo);
glBindFramebuffer(GL_READ_FRAMEBUFFER, depth_fbo);
glBlitFramebuffer(0, 0, width, height, 0, 0, width, height, GL_DEPTH_BUFFER_BIT, GL_NEAREST);
glCheck();
glBindFramebuffer(GL_FRAMEBUFFER, geom_fbo);
}
glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
glcache.Disable(GL_STENCIL_TEST);
// Bind stencil buffer for the fragment shader (shadowing)
glActiveTexture(GL_TEXTURE3);
glBindTexture(GL_TEXTURE_2D, stencilTexId);
glActiveTexture(GL_TEXTURE0);
glCheck();
//Opaque
DrawList<ListType_Opaque, false, Pass::Color>(pvrrc.global_param_op, previous_pass.op_count, current_pass.op_count - previous_pass.op_count);
//Alpha tested
DrawList<ListType_Punch_Through, false, Pass::Color>(pvrrc.global_param_pt, previous_pass.pt_count, current_pass.pt_count - previous_pass.pt_count);
// Unbind stencil
glActiveTexture(GL_TEXTURE3);
glBindTexture(GL_TEXTURE_2D, 0);
glActiveTexture(GL_TEXTURE0);
}
if (!skip_tr)
{
//
// PASS 3: Render TR to a-buffers
//
if (current_pass.autosort)
{
glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
glcache.Disable(GL_DEPTH_TEST);
// Although the depth test is disabled and thus writes to the depth buffer are also disabled,
// AMD cards have serious issues when the depth/stencil texture is still bound to the framebuffer
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_TEXTURE_2D, 0, 0);
glActiveTexture(GL_TEXTURE2);
glBindTexture(GL_TEXTURE_2D, depthTexId);
glActiveTexture(GL_TEXTURE0);
DrawList<ListType_Translucent, true, Pass::OIT>(pvrrc.global_param_tr, previous_pass.tr_count, current_pass.tr_count - previous_pass.tr_count);
// Translucent modifier volumes
if (settings.rend.ModifierVolumes)
{
SetBaseClipping();
DrawTranslucentModVols(previous_pass.mvo_tr_count, current_pass.mvo_tr_count - previous_pass.mvo_tr_count);
}
// Rebind the depth/stencil texture to the framebuffer
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_TEXTURE_2D, stencilTexId, 0);
if (render_pass < render_pass_count - 1)
{
//
// PASS 3b: Geometry pass with TR to update the depth for the next TA render pass
//
// Unbind depth texture
glActiveTexture(GL_TEXTURE2);
glBindTexture(GL_TEXTURE_2D, 0);
glActiveTexture(GL_TEXTURE0);
glcache.Enable(GL_DEPTH_TEST);
DrawList<ListType_Translucent, true, Pass::Depth>(pvrrc.global_param_tr, previous_pass.tr_count, current_pass.tr_count - previous_pass.tr_count);
}
}
else
{
glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
glcache.Enable(GL_DEPTH_TEST);
DrawList<ListType_Translucent, false, Pass::Color>(pvrrc.global_param_tr, previous_pass.tr_count, current_pass.tr_count - previous_pass.tr_count);
glcache.Disable(GL_BLEND);
}
glCheck();
if (render_pass < render_pass_count - 1)
{
//
// PASS 3c: Render a-buffer to temporary texture
//
GLuint texId = CreateColorFBOTexture(max_image_width, max_image_height);
glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
glActiveTexture(GL_TEXTURE0);
glBindSampler(0, 0);
glBindTexture(GL_TEXTURE_2D, opaqueTexId);
renderABuffer();
glcache.DeleteTextures(1, &opaqueTexId);
opaqueTexId = texId;
glCheck();
}
}
if (!skip_op_pt && render_pass < render_pass_count - 1)
{
// Clear the stencil from this pass
glStencilMask(0xFF);
glClear(GL_STENCIL_BUFFER_BIT);
}
previous_pass = current_pass;
}
//
// PASS 4: Render a-buffers to screen
//
glBindFramebuffer(GL_FRAMEBUFFER, output_fbo); glCheck();
glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
glActiveTexture(GL_TEXTURE0);
glBindSampler(0, 0);
glBindTexture(GL_TEXTURE_2D, opaqueTexId);
renderABuffer();
}
static void gl4_draw_quad_texture(GLuint texture, float w, float h)
{
glcache.Disable(GL_SCISSOR_TEST);
glcache.Disable(GL_DEPTH_TEST);
glcache.Disable(GL_STENCIL_TEST);
glcache.Disable(GL_CULL_FACE);
glcache.Disable(GL_BLEND);
gl4ShaderUniforms.trilinear_alpha = 1.0;
CurrentShader = gl4GetProgram(0,
false,
1,
0,
1,
0,
0,
2,
false,
false,
false,
false,
false,
Pass::Color);
glcache.UseProgram(CurrentShader->program);
gl4ShaderUniforms.Set(CurrentShader);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, texture);
struct Vertex vertices[] = {
{ 0, 0 + h, 1, { 255, 255, 255, 255 }, { 0, 0, 0, 0 }, 0, 1 },
{ 0, 0, 1, { 255, 255, 255, 255 }, { 0, 0, 0, 0 }, 0, 0 },
{ 0 + w, 0 + h, 1, { 255, 255, 255, 255 }, { 0, 0, 0, 0 }, 1, 1 },
{ 0 + w, 0, 1, { 255, 255, 255, 255 }, { 0, 0, 0, 0 }, 1, 0 },
};
GLushort indices[] = { 0, 1, 2, 1, 3 };
glBindVertexArray(gl4.vbo.main_vao);
glBindBuffer(GL_ARRAY_BUFFER, gl4.vbo.geometry);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, gl4.vbo.idxs);
glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STREAM_DRAW);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(indices), indices, GL_STREAM_DRAW);
glDrawElements(GL_TRIANGLE_STRIP, 5, GL_UNSIGNED_SHORT, (void *)0);
glCheck();
}
void gl4DrawFramebuffer(float w, float h)
{
gl4_draw_quad_texture(fbTextureId, w, h);
glcache.DeleteTextures(1, &fbTextureId);
fbTextureId = 0;
}
bool gl4_render_output_framebuffer()
{
glViewport(0, 0, screen_width, screen_height);
glcache.Disable(GL_SCISSOR_TEST);
if (gl.ofbo.fbo == 0)
return false;
glBindFramebuffer(GL_READ_FRAMEBUFFER, gl.ofbo.fbo);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
glBlitFramebuffer(0, 0, gl.ofbo.width, gl.ofbo.height,
0, 0, screen_width, screen_height,
GL_COLOR_BUFFER_BIT, GL_LINEAR);
glBindFramebuffer(GL_FRAMEBUFFER, 0);
return true;
}
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